HEADER    TRANSFERASE                             13-APR-22   7XIH              
TITLE     CRYSTAL STRUCTURE OF THE AMINOPROPYLTRANSFERASE, SPEE FROM            
TITLE    2 HYPERTHERMOPHILIC CRENARCHAEON, PYROBACULUM CALIDIFONTIS IN COMPLEX  
TITLE    3 WITH 5'-METHYLTHIOADENOSINE (MTA) AND SPERMIDINE                     
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: POLYAMINE AMINOPROPYLTRANSFERASE;                          
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: PUTRESCINE AMINOPROPYLTRANSFERASE,PAPT,SPERMIDINE SYNTHASE, 
COMPND   5 SPDS,SPDSY;                                                          
COMPND   6 EC: 2.5.1.16;                                                        
COMPND   7 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PYROBACULUM CALIDIFONTIS JCM 11548;             
SOURCE   3 ORGANISM_TAXID: 410359;                                              
SOURCE   4 STRAIN: DSM 21063 / JCM 11548 / VA1;                                 
SOURCE   5 GENE: SPEE, PCAL_0772;                                               
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PET28A                                
KEYWDS    POLYAMINE BIOSYNTHESIS, TRANSFERASE                                   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    E.MIZOHATA,Y.YASUDA                                                   
REVDAT   2   29-NOV-23 7XIH    1       REMARK                                   
REVDAT   1   15-JUN-22 7XIH    0                                                
JRNL        AUTH   W.FUKUDA,M.OSAKI,Y.YASUDA,R.HIDESE,T.HIGUCHI,N.UMEZAWA,      
JRNL        AUTH 2 S.FUJIWARA,E.MIZOHATA                                        
JRNL        TITL   SUBSTRATE SPECIFICITY OF AN AMINOPROPYLTRANSFERASE AND THE   
JRNL        TITL 2 BIOSYNTHESIS PATHWAY OF POLYAMINES IN THE HYPERTHERMOPHILIC  
JRNL        TITL 3 CRENARCHAEON PYROBACULUM CALIDIFONTIS.                       
JRNL        REF    CATALYSTS                     V.  12       2022              
JRNL        REFN                   ESSN 2073-4344                               
JRNL        DOI    10.3390/CATAL12050567                                        
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.20 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.8.0258                                      
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) : 1.20                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 39.23                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 158009                         
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) : 0.121                           
REMARK   3   R VALUE            (WORKING SET) : 0.119                           
REMARK   3   FREE R VALUE                     : 0.154                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 8178                            
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) : 1.20                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.23                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 11724                        
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.72                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2610                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 582                          
REMARK   3   BIN FREE R VALUE                    : 0.2920                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 4581                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 60                                      
REMARK   3   SOLVENT ATOMS            : 554                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 21.38                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -0.33000                                             
REMARK   3    B22 (A**2) : -0.67000                                             
REMARK   3    B33 (A**2) : 0.87000                                              
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.29000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.032         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.034         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.030         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 1.627         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.987                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.981                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  4856 ; 0.017 ; 0.013       
REMARK   3   BOND LENGTHS OTHERS               (A):  4592 ; 0.002 ; 0.017       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  6609 ; 2.045 ; 1.661       
REMARK   3   BOND ANGLES OTHERS          (DEGREES): 10613 ; 1.595 ; 1.586       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):   597 ; 6.568 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):   268 ;32.121 ;21.119       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   814 ;13.378 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):    41 ;17.911 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   630 ; 0.114 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  5445 ; 0.013 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  1060 ; 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):  2340 ; 2.113 ; 1.879       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  2339 ; 2.114 ; 1.879       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  2935 ; 2.381 ; 2.830       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  2936 ; 2.381 ; 2.831       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  2516 ; 4.611 ; 2.304       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  2517 ; 4.610 ; 2.304       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  3669 ; 4.919 ; 3.293       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  5358 ; 4.778 ;23.674       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  5245 ; 4.515 ;22.987       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  9448 ; 5.169 ; 3.000       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
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 : BABINET MODEL WITH MASK                              
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
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                                                           
REMARK   4                                                                      
REMARK   4 7XIH COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 22-APR-22.                  
REMARK 100 THE DEPOSITION ID IS D_1300028848.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 16-JUL-19                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SPRING-8                           
REMARK 200  BEAMLINE                       : BL44XU                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.90000                            
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : DECTRIS EIGER X 16M                
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : AIMLESS                            
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 166200                             
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.200                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 43.100                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.2                               
REMARK 200  DATA REDUNDANCY                : 3.400                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 15.1000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.20                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.22                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : NULL                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: 7XIF                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 37.03                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.95                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM ACETATE, PEG 2000MME, VAPOR     
REMARK 280  DIFFUSION, SITTING DROP, TEMPERATURE 293K                           
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y,-Z                                                 
REMARK 290       3555   X+1/2,Y+1/2,Z                                           
REMARK 290       4555   -X+1/2,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        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   3  1.000000  0.000000  0.000000       88.28350            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       28.62800            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000       88.28350            
REMARK 290   SMTRY2   4  0.000000  1.000000  0.000000       28.62800            
REMARK 290   SMTRY3   4  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: TETRAMERIC                        
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC                 
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 16530 ANGSTROM**2                         
REMARK 350 SURFACE AREA OF THE COMPLEX: 36930 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -48.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
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 350   BIOMT1   2 -1.000000  0.000000  0.000000       -8.05340            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       53.88653            
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   -19                                                      
REMARK 465     GLY A   -18                                                      
REMARK 465     SER A   -17                                                      
REMARK 465     SER A   -16                                                      
REMARK 465     HIS A   -15                                                      
REMARK 465     HIS A   -14                                                      
REMARK 465     HIS A   -13                                                      
REMARK 465     HIS A   -12                                                      
REMARK 465     HIS A   -11                                                      
REMARK 465     HIS A   -10                                                      
REMARK 465     SER A    -9                                                      
REMARK 465     SER A    -8                                                      
REMARK 465     GLY A    -7                                                      
REMARK 465     LEU A    -6                                                      
REMARK 465     VAL A    -5                                                      
REMARK 465     PRO A    -4                                                      
REMARK 465     ARG A    -3                                                      
REMARK 465     GLY A    -2                                                      
REMARK 465     SER A    -1                                                      
REMARK 465     HIS A     0                                                      
REMARK 465     MET A     1                                                      
REMARK 465     MET B   -19                                                      
REMARK 465     GLY B   -18                                                      
REMARK 465     SER B   -17                                                      
REMARK 465     SER B   -16                                                      
REMARK 465     HIS B   -15                                                      
REMARK 465     HIS B   -14                                                      
REMARK 465     HIS B   -13                                                      
REMARK 465     HIS B   -12                                                      
REMARK 465     HIS B   -11                                                      
REMARK 465     HIS B   -10                                                      
REMARK 465     SER B    -9                                                      
REMARK 465     SER B    -8                                                      
REMARK 465     GLY B    -7                                                      
REMARK 465     LEU B    -6                                                      
REMARK 465     VAL B    -5                                                      
REMARK 465     PRO B    -4                                                      
REMARK 465     ARG B    -3                                                      
REMARK 465     GLY B    -2                                                      
REMARK 465     SER B    -1                                                      
REMARK 465     HIS B     0                                                      
REMARK 465     MET B     1                                                      
REMARK 465     ARG B     2                                                      
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   CE   MET B   127     O    HOH B   598              1.85            
REMARK 500   OD2  ASP B    42     O    HOH B   401              1.86            
REMARK 500   O    HOH A   442     O    HOH A   624              2.07            
REMARK 500   OH   TYR B   247     O    HOH B   402              2.17            
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    MET A 127   CG    MET A 127   SD     -0.176                       
REMARK 500    GLU A 215   CD    GLU A 215   OE2     0.088                       
REMARK 500    MET B 127   CG    MET B 127   SD     -0.200                       
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  82   NE  -  CZ  -  NH1 ANGL. DEV. =  -5.5 DEGREES          
REMARK 500    MET A 109   CG  -  SD  -  CE  ANGL. DEV. = -13.7 DEGREES          
REMARK 500    MET B 109   CG  -  SD  -  CE  ANGL. DEV. = -14.5 DEGREES          
REMARK 500    MET B 127   CG  -  SD  -  CE  ANGL. DEV. = -19.2 DEGREES          
REMARK 500    PHE B 234   CB  -  CG  -  CD1 ANGL. DEV. =   4.5 DEGREES          
REMARK 500    ARG B 264   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.1 DEGREES          
REMARK 500    ARG B 274   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.8 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    PRO A   5      154.89    -49.42                                   
REMARK 500    LEU A  14      -78.58   -139.22                                   
REMARK 500    LEU A  14      -72.40   -117.07                                   
REMARK 500    ASP A  54      -10.79     86.89                                   
REMARK 500    ASN A  80       70.26   -160.05                                   
REMARK 500    ARG A 246      -51.54   -137.72                                   
REMARK 500    ARG A 246      -55.61   -145.84                                   
REMARK 500    PHE A 270      -62.36   -133.41                                   
REMARK 500    LEU B  14      -79.94   -132.92                                   
REMARK 500    ASP B  54       -9.00     86.82                                   
REMARK 500    ASN B  80       68.95   -161.56                                   
REMARK 500    ARG B 246      -54.93   -137.72                                   
REMARK 500    PHE B 270      -59.94   -133.29                                   
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 A 697        DISTANCE =  6.65 ANGSTROMS                       
REMARK 525    HOH B 657        DISTANCE =  6.05 ANGSTROMS                       
DBREF  7XIH A    1   289  UNP    A3MU81   SPEE_PYRCJ       1    289             
DBREF  7XIH B    1   289  UNP    A3MU81   SPEE_PYRCJ       1    289             
SEQADV 7XIH MET A  -19  UNP  A3MU81              INITIATING METHIONINE          
SEQADV 7XIH GLY A  -18  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER A  -17  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER A  -16  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS A  -15  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS A  -14  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS A  -13  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS A  -12  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS A  -11  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS A  -10  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER A   -9  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER A   -8  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH GLY A   -7  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH LEU A   -6  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH VAL A   -5  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH PRO A   -4  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH ARG A   -3  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH GLY A   -2  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER A   -1  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS A    0  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH MET B  -19  UNP  A3MU81              INITIATING METHIONINE          
SEQADV 7XIH GLY B  -18  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER B  -17  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER B  -16  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS B  -15  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS B  -14  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS B  -13  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS B  -12  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS B  -11  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS B  -10  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER B   -9  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER B   -8  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH GLY B   -7  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH LEU B   -6  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH VAL B   -5  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH PRO B   -4  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH ARG B   -3  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH GLY B   -2  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH SER B   -1  UNP  A3MU81              EXPRESSION TAG                 
SEQADV 7XIH HIS B    0  UNP  A3MU81              EXPRESSION TAG                 
SEQRES   1 A  309  MET GLY SER SER HIS HIS HIS HIS HIS HIS SER SER GLY          
SEQRES   2 A  309  LEU VAL PRO ARG GLY SER HIS MET ARG LYS VAL PRO GLY          
SEQRES   3 A  309  PRO ILE THR LEU ILE GLU PRO LEU SER GLY ASN THR SER          
SEQRES   4 A  309  LEU LEU ILE LYS ILE ASN ALA ILE HIS SER VAL LYS LYS          
SEQRES   5 A  309  SER PRO TYR GLN GLU ILE ILE ILE ALA ASP THR GLU ASP          
SEQRES   6 A  309  TYR GLY ARG VAL LEU ILE LEU ASP ASP TYR ILE GLN SER          
SEQRES   7 A  309  SER TYR VAL ASP GLU GLN TYR TYR HIS GLU SER LEU VAL          
SEQRES   8 A  309  HIS PRO ALA MET ALA THR HIS PRO ASN PRO ARG ASP VAL          
SEQRES   9 A  309  LEU ILE LEU GLY GLY GLY GLU GLY ALA THR LEU ARG GLU          
SEQRES  10 A  309  ALA LEU LYS HIS GLY THR VAL LYS ARG ALA VAL MET VAL          
SEQRES  11 A  309  ASP ILE ASP ARG ASP VAL VAL GLU LEU SER ARG ALA TYR          
SEQRES  12 A  309  LEU PRO GLN MET HIS GLN GLY ALA PHE ASP ASP PRO ARG          
SEQRES  13 A  309  ALA LYS VAL VAL ILE GLN ASP GLY PHE VAL TYR VAL GLU          
SEQRES  14 A  309  GLU ALA ILE LYS ALA GLY ASP LYS TYR ASP VAL ILE ILE          
SEQRES  15 A  309  MET ASP LEU THR ASP PRO TYR SER SER ASP ILE ALA LYS          
SEQRES  16 A  309  GLN LEU TYR THR ARG GLU PHE PHE ALA LYS ILE ARG ARG          
SEQRES  17 A  309  ILE LEU ASN ASP ASP GLY VAL VAL VAL THR GLN ALA GLY          
SEQRES  18 A  309  ASN SER PHE TYR PHE PRO ALA GLU TYR ASP MET VAL LEU          
SEQRES  19 A  309  GLU GLY VAL LYS ALA ASN PHE PRO ILE VAL ALA GLU TYR          
SEQRES  20 A  309  GLU VAL TRP ILE PRO SER PHE GLY TYR ALA VAL ASN PHE          
SEQRES  21 A  309  ILE LEU GLY SER LEU ARG TYR ASP PRO HIS ALA LEU THR          
SEQRES  22 A  309  PRO SER GLU VAL ASP GLU ARG LEU ARG ALA ARG GLY VAL          
SEQRES  23 A  309  LYS THR ALA PHE TYR THR GLY ARG VAL HIS LEU ALA LEU          
SEQRES  24 A  309  MET ASN MET PRO ILE HIS ARG LYS LEU ARG                      
SEQRES   1 B  309  MET GLY SER SER HIS HIS HIS HIS HIS HIS SER SER GLY          
SEQRES   2 B  309  LEU VAL PRO ARG GLY SER HIS MET ARG LYS VAL PRO GLY          
SEQRES   3 B  309  PRO ILE THR LEU ILE GLU PRO LEU SER GLY ASN THR SER          
SEQRES   4 B  309  LEU LEU ILE LYS ILE ASN ALA ILE HIS SER VAL LYS LYS          
SEQRES   5 B  309  SER PRO TYR GLN GLU ILE ILE ILE ALA ASP THR GLU ASP          
SEQRES   6 B  309  TYR GLY ARG VAL LEU ILE LEU ASP ASP TYR ILE GLN SER          
SEQRES   7 B  309  SER TYR VAL ASP GLU GLN TYR TYR HIS GLU SER LEU VAL          
SEQRES   8 B  309  HIS PRO ALA MET ALA THR HIS PRO ASN PRO ARG ASP VAL          
SEQRES   9 B  309  LEU ILE LEU GLY GLY GLY GLU GLY ALA THR LEU ARG GLU          
SEQRES  10 B  309  ALA LEU LYS HIS GLY THR VAL LYS ARG ALA VAL MET VAL          
SEQRES  11 B  309  ASP ILE ASP ARG ASP VAL VAL GLU LEU SER ARG ALA TYR          
SEQRES  12 B  309  LEU PRO GLN MET HIS GLN GLY ALA PHE ASP ASP PRO ARG          
SEQRES  13 B  309  ALA LYS VAL VAL ILE GLN ASP GLY PHE VAL TYR VAL GLU          
SEQRES  14 B  309  GLU ALA ILE LYS ALA GLY ASP LYS TYR ASP VAL ILE ILE          
SEQRES  15 B  309  MET ASP LEU THR ASP PRO TYR SER SER ASP ILE ALA LYS          
SEQRES  16 B  309  GLN LEU TYR THR ARG GLU PHE PHE ALA LYS ILE ARG ARG          
SEQRES  17 B  309  ILE LEU ASN ASP ASP GLY VAL VAL VAL THR GLN ALA GLY          
SEQRES  18 B  309  ASN SER PHE TYR PHE PRO ALA GLU TYR ASP MET VAL LEU          
SEQRES  19 B  309  GLU GLY VAL LYS ALA ASN PHE PRO ILE VAL ALA GLU TYR          
SEQRES  20 B  309  GLU VAL TRP ILE PRO SER PHE GLY TYR ALA VAL ASN PHE          
SEQRES  21 B  309  ILE LEU GLY SER LEU ARG TYR ASP PRO HIS ALA LEU THR          
SEQRES  22 B  309  PRO SER GLU VAL ASP GLU ARG LEU ARG ALA ARG GLY VAL          
SEQRES  23 B  309  LYS THR ALA PHE TYR THR GLY ARG VAL HIS LEU ALA LEU          
SEQRES  24 B  309  MET ASN MET PRO ILE HIS ARG LYS LEU ARG                      
HET    MTA  A 301      20                                                       
HET    SPD  A 302      10                                                       
HET    MTA  B 301      20                                                       
HET    SPD  B 302      10                                                       
HETNAM     MTA 5'-DEOXY-5'-METHYLTHIOADENOSINE                                  
HETNAM     SPD SPERMIDINE                                                       
HETSYN     SPD N-(2-AMINO-PROPYL)-1,4-DIAMINOBUTANE; PA(34)                     
FORMUL   3  MTA    2(C11 H15 N5 O3 S)                                           
FORMUL   4  SPD    2(C7 H19 N3)                                                 
FORMUL   7  HOH   *554(H2 O)                                                    
HELIX    1 AA1 ASP A   62  HIS A   78  1                                  17    
HELIX    2 AA2 GLY A   92  LYS A  100  1                                   9    
HELIX    3 AA3 ASP A  113  LEU A  124  1                                  12    
HELIX    4 AA4 LEU A  124  GLN A  129  1                                   6    
HELIX    5 AA5 GLY A  130  ASP A  134  5                                   5    
HELIX    6 AA6 ASP A  143  GLY A  155  1                                  13    
HELIX    7 AA7 ALA A  174  TYR A  178  5                                   5    
HELIX    8 AA8 THR A  179  ILE A  189  1                                  11    
HELIX    9 AA9 PHE A  206  ALA A  219  1                                  14    
HELIX   10 AB1 PRO A  232  GLY A  235  5                                   4    
HELIX   11 AB2 ASP A  248  LEU A  252  5                                   5    
HELIX   12 AB3 THR A  253  ARG A  264  1                                  12    
HELIX   13 AB4 THR A  272  MET A  282  1                                  11    
HELIX   14 AB5 ASP B   62  HIS B   78  1                                  17    
HELIX   15 AB6 GLY B   92  LYS B  100  1                                   9    
HELIX   16 AB7 ASP B  113  LEU B  124  1                                  12    
HELIX   17 AB8 LEU B  124  GLN B  129  1                                   6    
HELIX   18 AB9 GLY B  130  ASP B  134  5                                   5    
HELIX   19 AC1 ASP B  143  GLY B  155  1                                  13    
HELIX   20 AC2 SER B  171  TYR B  178  5                                   8    
HELIX   21 AC3 THR B  179  ILE B  189  1                                  11    
HELIX   22 AC4 PHE B  206  ALA B  219  1                                  14    
HELIX   23 AC5 PRO B  232  GLY B  235  5                                   4    
HELIX   24 AC6 ASP B  248  LEU B  252  5                                   5    
HELIX   25 AC7 THR B  253  ARG B  264  1                                  12    
HELIX   26 AC8 THR B  272  MET B  280  1                                   9    
SHEET    1 AA1 4 THR A   9  PRO A  13  0                                        
SHEET    2 AA1 4 THR A  18  LYS A  32 -1  O  ILE A  22   N  LEU A  10           
SHEET    3 AA1 4 THR B  18  LYS B  32 -1  O  SER B  19   N  LEU A  21           
SHEET    4 AA1 4 THR B   9  PRO B  13 -1  N  LEU B  10   O  ILE B  22           
SHEET    1 AA2 8 TYR A  55  SER A  59  0                                        
SHEET    2 AA2 8 GLY A  47  LEU A  52 -1  N  LEU A  50   O  GLN A  57           
SHEET    3 AA2 8 GLU A  37  THR A  43 -1  N  ALA A  41   O  VAL A  49           
SHEET    4 AA2 8 THR A  18  LYS A  32 -1  N  LYS A  31   O  ILE A  38           
SHEET    5 AA2 8 THR B  18  LYS B  32 -1  O  SER B  19   N  LEU A  21           
SHEET    6 AA2 8 GLU B  37  THR B  43 -1  O  ILE B  38   N  LYS B  31           
SHEET    7 AA2 8 GLY B  47  LEU B  52 -1  O  VAL B  49   N  ALA B  41           
SHEET    8 AA2 8 TYR B  55  SER B  59 -1  O  GLN B  57   N  LEU B  50           
SHEET    1 AA3 7 ALA A 137  ILE A 141  0                                        
SHEET    2 AA3 7 ARG A 106  ASP A 111  1  N  MET A 109   O  VAL A 140           
SHEET    3 AA3 7 ASP A  83  GLY A  88  1  N  GLY A  88   O  VAL A 110           
SHEET    4 AA3 7 TYR A 158  ASP A 164  1  O  ASP A 164   N  LEU A  87           
SHEET    5 AA3 7 LEU A 190  GLN A 199  1  O  VAL A 197   N  MET A 163           
SHEET    6 AA3 7 ALA A 237  SER A 244 -1  O  GLY A 243   N  VAL A 196           
SHEET    7 AA3 7 ILE A 223  TRP A 230 -1  N  TYR A 227   O  PHE A 240           
SHEET    1 AA4 7 ALA B 137  ILE B 141  0                                        
SHEET    2 AA4 7 ARG B 106  ASP B 111  1  N  MET B 109   O  VAL B 140           
SHEET    3 AA4 7 ASP B  83  GLY B  88  1  N  GLY B  88   O  VAL B 110           
SHEET    4 AA4 7 TYR B 158  ASP B 164  1  O  ASP B 164   N  LEU B  87           
SHEET    5 AA4 7 LEU B 190  GLN B 199  1  O  VAL B 197   N  MET B 163           
SHEET    6 AA4 7 ALA B 237  SER B 244 -1  O  GLY B 243   N  VAL B 196           
SHEET    7 AA4 7 ILE B 223  TRP B 230 -1  N  TYR B 227   O  PHE B 240           
CISPEP   1 GLY A    6    PRO A    7          0         6.60                     
CISPEP   2 GLY B    6    PRO B    7          0         6.85                     
CRYST1  176.567   57.256   54.485  90.00  98.50  90.00 C 1 2 1       8          
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      0.005664  0.000000  0.000846        0.00000                         
SCALE2      0.000000  0.017465  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.018557        0.00000