HEADER    HYDROLASE                               14-JUL-15   5A8C              
TITLE     THE ULTRA HIGH RESOLUTION STRUCTURE OF A NOVEL ALPHA-L-               
TITLE    2 ARABINOFURANOSIDASE (CTGH43) FROM CLOSTRIDIUM THERMOCELLUM ATCC 27405
TITLE    3 WITH BOUND TRIMETHYL N-OXIDE (TRS)                                   
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: CARBOHYDRATE BINDING FAMILY 6;                             
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: FAMILY 43 GLYCOSIDE HYDROLASE, RESIDUES 30-330;            
COMPND   5 SYNONYM: ALPHA-L-ARABINOFURANOSIDASE;                                
COMPND   6 EC: 3.2.1.55;                                                        
COMPND   7 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: CLOSTRIDIUM THERMOCELLUM;                       
SOURCE   3 ORGANISM_TAXID: 1515;                                                
SOURCE   4 ATCC: 27405;                                                         
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   8 EXPRESSION_SYSTEM_VARIANT: PLYSS;                                    
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PET-28A                                   
KEYWDS    HYDROLASE, G CTGH43, ALPHA-L-ARABINOFURANOSIDASE, 5-FOLD-BETA-        
KEYWDS   2 PROPELLER                                                            
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.GOYAL,S.AHMED,K.SHARMA,C.M.G.A.FONTES,S.NAJMUDIN                    
REVDAT   4   10-JAN-24 5A8C    1       REMARK LINK                              
REVDAT   3   01-MAR-17 5A8C    1       JRNL                                     
REVDAT   2   07-DEC-16 5A8C    1       JRNL                                     
REVDAT   1   27-JUL-16 5A8C    0                                                
JRNL        AUTH   A.GOYAL,S.AHMED,K.SHARMA,V.GUPTA,P.BULE,V.D.ALVES,           
JRNL        AUTH 2 C.M.FONTES,S.NAJMUDIN                                        
JRNL        TITL   MOLECULAR DETERMINANTS OF SUBSTRATE SPECIFICITY REVEALED BY  
JRNL        TITL 2 THE STRUCTURE OF CLOSTRIDIUM THERMOCELLUM                    
JRNL        TITL 3 ARABINOFURANOSIDASE 43A FROM GLYCOSYL HYDROLASE FAMILY 43    
JRNL        TITL 4 SUBFAMILY 16.                                                
JRNL        REF    ACTA CRYSTALLOGR D STRUCT     V.  72  1281 2016              
JRNL        REF  2 BIOL                                                         
JRNL        REFN                   ISSN 2059-7983                               
JRNL        PMID   27917828                                                     
JRNL        DOI    10.1107/S205979831601737X                                    
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   A.GOYAL,S.AHMED,C.M.G.A.FONTES,S.NAJMUDIN                    
REMARK   1  TITL   CRYSTALLIZATION AND PRELIMINARY X-RAY CRYSTALLOGRAPHIC       
REMARK   1  TITL 2 ANALYSIS OF A NOVEL ALPHA-L-ARABINOFURANOSIDASE (CTGH43) FR  
REMARK   1  TITL 3 CLOSTRIDIUM THERMOCELLUM ATCC 27405.                         
REMARK   1  REF    ACTA CRYSTALLOGR.,SECT.F      V.  70   616 2014              
REMARK   1  REFN                   ESSN 2053-230X                               
REMARK   1  PMID   24817722                                                     
REMARK   1  DOI    10.1107/S2053230X14006402                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    0.97 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.8.0123                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 0.97                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 39.95                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 71.3                           
REMARK   3   NUMBER OF REFLECTIONS             : 113299                         
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.104                           
REMARK   3   R VALUE            (WORKING SET) : 0.103                           
REMARK   3   FREE R VALUE                     : 0.124                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 5972                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 0.97                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.00                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 760                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 6.42                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2420                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 31                           
REMARK   3   BIN FREE R VALUE                    : 0.2420                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2365                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 9                                       
REMARK   3   SOLVENT ATOMS            : 564                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 11.11                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.30000                                             
REMARK   3    B22 (A**2) : -0.27000                                             
REMARK   3    B33 (A**2) : 0.52000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : -0.16000                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.021         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.022         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.011         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 0.475         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.984                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.979                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2506 ; 0.017 ; 0.020       
REMARK   3   BOND LENGTHS OTHERS               (A):  2241 ; 0.002 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  3430 ; 1.799 ; 1.927       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  5170 ; 1.060 ; 3.000       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   319 ; 6.811 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   124 ;32.645 ;24.355       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   372 ;11.095 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    10 ;14.781 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   351 ; 0.125 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  2937 ; 0.011 ; 0.021       
REMARK   3   GENERAL PLANES OTHERS             (A):   629 ; 0.002 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  1218 ; 0.891 ; 0.842       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  1216 ; 0.858 ; 0.840       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  1525 ; 1.257 ; 1.276       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1288 ; 1.271 ; 1.010       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  4747 ; 3.873 ; 3.000       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):    92 ;21.023 ; 5.000       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  5146 ; 6.373 ; 5.000       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.60                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS. U VALUES REFINED INDIVIDUALLY                            
REMARK   4                                                                      
REMARK   4 5A8C COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 14-JUL-15.                  
REMARK 100 THE DEPOSITION ID IS D_1290064371.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 29-SEP-13                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : DIAMOND                            
REMARK 200  BEAMLINE                       : I04                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.9795                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : DECTRIS PILATUS 6M                 
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XIA2                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 119795                             
REMARK 200  RESOLUTION RANGE HIGH      (A) : 0.970                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 67.760                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 71.5                               
REMARK 200  DATA REDUNDANCY                : 7.200                              
REMARK 200  R MERGE                    (I) : 0.08000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 16.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 0.97                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.00                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 6.7                                
REMARK 200  DATA REDUNDANCY IN SHELL       : 4.20                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.52000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: BALBES                                                
REMARK 200 STARTING MODEL: PDB ENTRY 3C7E                                       
REMARK 200                                                                      
REMARK 200 REMARK: THE RESOLUTION CUT-OFF TO GET OVER 90 PER CENT               
REMARK 200  COMPLETENESS IS 1.1A BUT ALL THE DATA WAS USED FOR REFINEMENT.      
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 39.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.00                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M TRIS PH 8.5, 20% PEG 2000          
REMARK 280  MONOMETHYL ETHER, 0.2 M TRIMETHYL N-OXIDE, WITH PARATONE-N USED     
REMARK 280  AS CRYOPROTECTANT                                                   
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-Z                                             
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       33.85000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET A     5                                                      
REMARK 465     GLY A     6                                                      
REMARK 465     SER A     7                                                      
REMARK 465     SER A     8                                                      
REMARK 465     HIS A     9                                                      
REMARK 465     HIS A    10                                                      
REMARK 465     HIS A    11                                                      
REMARK 465     HIS A    12                                                      
REMARK 465     HIS A    13                                                      
REMARK 465     HIS A    14                                                      
REMARK 465     SER A    15                                                      
REMARK 465     SER A    16                                                      
REMARK 465     GLY A    17                                                      
REMARK 465     PRO A    18                                                      
REMARK 465     GLN A    19                                                      
REMARK 465     GLN A    20                                                      
REMARK 465     GLY A    21                                                      
REMARK 465     LEU A    22                                                      
REMARK 465     VAL A    23                                                      
REMARK 465     ARG A    24                                                      
REMARK 465     GLY A    25                                                      
REMARK 465     HIS A    26                                                      
REMARK 465     MET A    27                                                      
REMARK 465     ALA A    28                                                      
REMARK 465     SER A    29                                                      
REMARK 465     ALA A    30                                                      
REMARK 465     GLN A   330                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     LYS A 329    CG   CD   CE   NZ                                   
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   O    HOH A  2098     O    HOH A  2162              1.88            
REMARK 500   O    HOH A  2284     O    HOH A  2285              1.96            
REMARK 500   O    HOH A  2476     O    HOH A  2477              2.01            
REMARK 500   O    HOH A  2102     O    HOH A  2103              2.02            
REMARK 500   O    HOH A  2197     O    HOH A  2353              2.02            
REMARK 500   O    HOH A  2150     O    HOH A  2151              2.07            
REMARK 500   O    HOH A  2024     O    HOH A  2026              2.11            
REMARK 500   O    HOH A  2039     O    HOH A  2195              2.14            
REMARK 500   CG2  THR A   207     O    HOH A  2381              2.14            
REMARK 500   O    HOH A  2098     O    HOH A  2164              2.18            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   O    HOH A  2277     O    HOH A  2550     2757     1.79            
REMARK 500   O    HOH A  2087     O    HOH A  2125     2646     1.96            
REMARK 500   O    HOH A  2357     O    HOH A  2454     2757     2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500    GLN A 160   C     GLN A 160   O      -0.117                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    ARG A  52   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.3 DEGREES          
REMARK 500    MET A 162   CG  -  SD  -  CE  ANGL. DEV. = -21.8 DEGREES          
REMARK 500    LEU A 164   CB  -  CG  -  CD2 ANGL. DEV. =  12.5 DEGREES          
REMARK 500    PHE A 165   CB  -  CG  -  CD1 ANGL. DEV. =   4.6 DEGREES          
REMARK 500    ARG A 212   NE  -  CZ  -  NH2 ANGL. DEV. =  -3.0 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASP A  82       -0.11   -144.33                                   
REMARK 500    LYS A  84      -52.53   -132.02                                   
REMARK 500    ALA A 107       72.87     59.39                                   
REMARK 500    ASN A 126       62.95   -102.86                                   
REMARK 500    ASN A 126       65.68   -105.37                                   
REMARK 500    PHE A 214      -53.78   -123.87                                   
REMARK 500    ALA A 216       30.53     70.51                                   
REMARK 500    GLN A 236       36.09   -140.68                                   
REMARK 500    ASN A 269     -163.25   -110.75                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 525                                                                      
REMARK 525 SOLVENT                                                              
REMARK 525                                                                      
REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT                    
REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST                  
REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT                 
REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE                       
REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER;                             
REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE                  
REMARK 525 NUMBER; I=INSERTION CODE):                                           
REMARK 525                                                                      
REMARK 525  M RES CSSEQI                                                        
REMARK 525    HOH A2081        DISTANCE =  6.01 ANGSTROMS                       
REMARK 525    HOH A2083        DISTANCE =  6.61 ANGSTROMS                       
REMARK 525    HOH A2084        DISTANCE =  6.57 ANGSTROMS                       
REMARK 525    HOH A2099        DISTANCE =  5.84 ANGSTROMS                       
REMARK 525    HOH A2165        DISTANCE =  6.41 ANGSTROMS                       
REMARK 525    HOH A2198        DISTANCE =  6.46 ANGSTROMS                       
REMARK 525    HOH A2210        DISTANCE =  6.42 ANGSTROMS                       
REMARK 525    HOH A2226        DISTANCE =  6.23 ANGSTROMS                       
REMARK 525    HOH A2227        DISTANCE =  7.20 ANGSTROMS                       
REMARK 525    HOH A2241        DISTANCE =  6.35 ANGSTROMS                       
REMARK 525    HOH A2306        DISTANCE =  6.91 ANGSTROMS                       
REMARK 525    HOH A2322        DISTANCE =  6.66 ANGSTROMS                       
REMARK 600                                                                      
REMARK 600 HETEROGEN                                                            
REMARK 600                                                                      
REMARK 600 CALCIUM ION (CA): FROM THE STORAGE BUFFER                            
REMARK 600 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL (TRS): FROM THE             
REMARK 600  CRYSTALLISATION BUFFER                                              
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A1330  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HIS A 272   NE2                                                    
REMARK 620 2 HOH A2033   O    78.6                                              
REMARK 620 3 HOH A2042   O    99.3  77.1                                        
REMARK 620 4 HOH A2262   O    99.0  75.9 143.4                                  
REMARK 620 5 HOH A2348   O    98.1 143.6 138.4  68.9                            
REMARK 620 6 HOH A2349   O   179.7 101.3  80.3  81.3  82.2                      
REMARK 620 7 HOH A2422   O    80.8 140.0  72.8 141.5  73.1  99.1                
REMARK 620 N                    1     2     3     4     5     6                 
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 1330                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE TRS A 1331                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 5A8D   RELATED DB: PDB                                   
REMARK 900 THE HIGH RESOLUTION STRUCTURE OF A NOVEL ALPHA-L-                    
REMARK 900 ARABINOFURANOSIDASE (CTGH43) FROM CLOSTRIDIUM THERMOCELLUM ATCC      
REMARK 900 27405                                                                
DBREF  5A8C A   30   330  UNP    A3DEX4   A3DEX4_CLOTH    30    330             
SEQADV 5A8C MET A    5  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C GLY A    6  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C SER A    7  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C SER A    8  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C HIS A    9  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C HIS A   10  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C HIS A   11  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C HIS A   12  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C HIS A   13  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C HIS A   14  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C SER A   15  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C SER A   16  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C GLY A   17  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C PRO A   18  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C GLN A   19  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C GLN A   20  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C GLY A   21  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C LEU A   22  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C VAL A   23  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C ARG A   24  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C GLY A   25  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C HIS A   26  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C MET A   27  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C ALA A   28  UNP  A3DEX4              EXPRESSION TAG                 
SEQADV 5A8C SER A   29  UNP  A3DEX4              EXPRESSION TAG                 
SEQRES   1 A  326  MET GLY SER SER HIS HIS HIS HIS HIS HIS SER SER GLY          
SEQRES   2 A  326  PRO GLN GLN GLY LEU VAL ARG GLY HIS MET ALA SER ALA          
SEQRES   3 A  326  ALA ASP TYR PRO ILE PHE SER GLN ARG PHE THR ALA ASP          
SEQRES   4 A  326  PRO ALA ALA VAL VAL TYR ASN GLY ARG LEU TYR ILE TYR          
SEQRES   5 A  326  CYS SER HIS ASP SER ASP ALA THR PRO GLY GLN SER THR          
SEQRES   6 A  326  TYR ASN ILE PRO ASP ILE THR CYS ILE SER THR ASP ASP          
SEQRES   7 A  326  LEU LYS ASN TRP THR ASP HIS GLY GLU VAL PHE ASN ALA          
SEQRES   8 A  326  LYS ARG ASP SER ARG TRP ALA SER VAL SER TRP ALA PRO          
SEQRES   9 A  326  SER ILE VAL TYR ARG ASN ASN LYS PHE TYR LEU TYR TYR          
SEQRES  10 A  326  GLY ASN GLY GLY ASN GLY ILE GLY VAL ALA VAL SER ASP          
SEQRES  11 A  326  SER PRO THR GLY PRO PHE LYS ASP PRO LEU PRO GLY PRO          
SEQRES  12 A  326  LEU VAL SER TRP ASN THR PRO GLY VAL GLN PRO ALA GLN          
SEQRES  13 A  326  ASN MET TRP LEU PHE ASP PRO GLY VAL PHE VAL ASP ASP          
SEQRES  14 A  326  ASP GLY GLN ALA TYR MET TYR PHE GLY GLY ASN GLY GLN          
SEQRES  15 A  326  ASN ASN ILE ARG VAL ILE LYS LEU GLY ASN ASP MET ILE          
SEQRES  16 A  326  SER THR VAL GLY SER ALA MET THR MET SER ALA PRO ARG          
SEQRES  17 A  326  PHE PHE GLU ALA ALA TYR MET HIS LYS TYR ASN GLY LYS          
SEQRES  18 A  326  TYR TYR PHE SER TYR ALA SER ASP PHE SER GLN GLY ALA          
SEQRES  19 A  326  SER LYS ILE GLU TYR MET MET SER ASP LYS PRO THR THR          
SEQRES  20 A  326  GLY PHE GLN TYR LYS GLY VAL ILE LEU PRO GLN PRO PRO          
SEQRES  21 A  326  ASP ASN TYR SER ASN ASN ASN HIS HIS ALA ILE VAL GLU          
SEQRES  22 A  326  TYR LYS GLY ASN TRP TYR VAL VAL TYR HIS ASN ARG THR          
SEQRES  23 A  326  VAL ALA LYS GLN ARG GLY LEU ASP PRO VAL TYR GLN ARG          
SEQRES  24 A  326  ASN VAL CYS ILE ASP GLN MET PHE TYR ASN ALA ASP GLY          
SEQRES  25 A  326  THR ILE LYS GLN VAL VAL PRO THR VAL ASP GLY LEU LYS          
SEQRES  26 A  326  GLN                                                          
HET     CA  A1330       1                                                       
HET    TRS  A1331       8                                                       
HETNAM      CA CALCIUM ION                                                      
HETNAM     TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL                         
HETSYN     TRS TRIS BUFFER                                                      
FORMUL   2   CA    CA 2+                                                        
FORMUL   3  TRS    C4 H12 N O3 1+                                               
FORMUL   4  HOH   *564(H2 O)                                                    
HELIX    1   1 ALA A   95  SER A   99  1                                   5    
HELIX    2   2 ARG A  289  GLY A  296  1                                   8    
SHEET    1  AA 4 PHE A  40  TYR A  49  0                                        
SHEET    2  AA 4 ARG A  52  ASP A  60 -1  O  ARG A  52   N  TYR A  49           
SHEET    3  AA 4 ASP A  74  THR A  80 -1  O  ASP A  74   N  HIS A  59           
SHEET    4  AA 4 THR A  87  ASN A  94 -1  O  THR A  87   N  SER A  79           
SHEET    1  AB 3 TRP A 106  ARG A 113  0                                        
SHEET    2  AB 3 LYS A 116  GLY A 122 -1  O  LYS A 116   N  ARG A 113           
SHEET    3  AB 3 ILE A 128  SER A 133 -1  O  GLY A 129   N  TYR A 121           
SHEET    1  AC 4 GLY A 168  VAL A 171  0                                        
SHEET    2  AC 4 ALA A 177  GLY A 182 -1  O  TYR A 178   N  PHE A 170           
SHEET    3  AC 4 ILE A 189  LEU A 194 -1  O  ARG A 190   N  PHE A 181           
SHEET    4  AC 4 THR A 201  MET A 208 -1  O  VAL A 202   N  LYS A 193           
SHEET    1  AD 4 PHE A 213  TYR A 222  0                                        
SHEET    2  AD 4 LYS A 225  SER A 232 -1  O  LYS A 225   N  TYR A 222           
SHEET    3  AD 4 ILE A 241  SER A 246 -1  O  GLU A 242   N  TYR A 230           
SHEET    4  AD 4 GLN A 254  LEU A 260 -1  O  GLN A 254   N  MET A 245           
SHEET    1  AE 3 ALA A 274  TYR A 278  0                                        
SHEET    2  AE 3 ASN A 281  ASN A 288 -1  O  ASN A 281   N  TYR A 278           
SHEET    3  AE 3 ASN A 304  MET A 310 -1  O  ASN A 304   N  ASN A 288           
LINK         NE2 HIS A 272                CA    CA A1330     1555   1555  2.50  
LINK        CA    CA A1330                 O   HOH A2033     1555   1555  2.43  
LINK        CA    CA A1330                 O   HOH A2042     1555   1555  2.39  
LINK        CA    CA A1330                 O   HOH A2262     1555   1555  2.47  
LINK        CA    CA A1330                 O   HOH A2348     1555   1555  2.44  
LINK        CA    CA A1330                 O   HOH A2349     1555   1555  2.37  
LINK        CA    CA A1330                 O   HOH A2422     1555   1555  2.48  
CISPEP   1 TYR A   33    PRO A   34          0        -3.31                     
CISPEP   2 GLY A  138    PRO A  139          0        -0.72                     
CISPEP   3 GLN A  157    PRO A  158          0        -2.17                     
SITE     1 AC1  7 HIS A 272  HOH A2033  HOH A2042  HOH A2262                    
SITE     2 AC1  7 HOH A2348  HOH A2349  HOH A2422                               
SITE     1 AC2 10 ASP A  43  TYR A  70  TRP A 106  PHE A 165                    
SITE     2 AC2 10 ASP A 166  GLU A 215  ASN A 270  HIS A 272                    
SITE     3 AC2 10 ARG A 303  HOH A2034                                          
CRYST1   45.440   67.700   51.010  90.00 113.09  90.00 P 1 21 1      2          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.022007  0.000000  0.009382        0.00000                         
SCALE2      0.000000  0.014771  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.021311        0.00000