HEADER    UNKNOWN FUNCTION                        21-SEP-11   3TWE              
TITLE     CRYSTAL STRUCTURE OF THE DE NOVO DESIGNED PEPTIDE ALPHA4H             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: ALPHA4H;                                                   
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 OTHER_DETAILS: SYNTHESIZED                                           
KEYWDS    ALPHA HELIX, UNKNOWN FUNCTION                                         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.C.BUER,J.L.MEAGHER,J.A.STUCKEY,E.N.G.MARSH                          
REVDAT   5   28-FEB-24 3TWE    1       REMARK                                   
REVDAT   4   08-NOV-17 3TWE    1       REMARK                                   
REVDAT   3   18-APR-12 3TWE    1       JRNL                                     
REVDAT   2   04-APR-12 3TWE    1       JRNL                                     
REVDAT   1   14-MAR-12 3TWE    0                                                
JRNL        AUTH   B.C.BUER,J.L.MEAGHER,J.A.STUCKEY,E.N.MARSH                   
JRNL        TITL   STRUCTURAL BASIS FOR THE ENHANCED STABILITY OF HIGHLY        
JRNL        TITL 2 FLUORINATED PROTEINS.                                        
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V. 109  4810 2012              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   22411812                                                     
JRNL        DOI    10.1073/PNAS.1120112109                                      
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.36 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : BUSTER-TNT BUSTER 2.8.0                              
REMARK   3   AUTHORS     : BRICOGNE,BLANC,BRANDL,FLENSBURG,KELLER,              
REMARK   3               : PACIOREK,ROVERSI,SHARFF,SMART,VONRHEIN,              
REMARK   3               : WOMACK,MATTHEWS,TEN EYCK,TRONRUD                     
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.36                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 10467                          
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)  : 0.200                          
REMARK   3   R VALUE            (WORKING SET)  : 0.197                          
REMARK   3   FREE R VALUE                      : 0.255                          
REMARK   3   FREE R VALUE TEST SET SIZE   (%)  : 4.760                          
REMARK   3   FREE R VALUE TEST SET COUNT       : 498                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE   : NULL                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED               : 5                        
REMARK   3   BIN RESOLUTION RANGE HIGH   (ANGSTROMS) : 1.36                     
REMARK   3   BIN RESOLUTION RANGE LOW    (ANGSTROMS) : 1.52                     
REMARK   3   BIN COMPLETENESS (WORKING+TEST)     (%) : NULL                     
REMARK   3   REFLECTIONS IN BIN (WORKING + TEST SET) : 2970                     
REMARK   3   BIN R VALUE        (WORKING + TEST SET) : 0.1566                   
REMARK   3   REFLECTIONS IN BIN        (WORKING SET) : 2832                     
REMARK   3   BIN R VALUE               (WORKING SET) : 0.1558                   
REMARK   3   BIN FREE R VALUE                        : 0.1726                   
REMARK   3   BIN FREE R VALUE TEST SET SIZE      (%) : 4.65                     
REMARK   3   BIN FREE R VALUE TEST SET COUNT         : 138                      
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE     : NULL                     
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 439                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 13                                      
REMARK   3   SOLVENT ATOMS            : 40                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 24.61                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.26700                                              
REMARK   3    B22 (A**2) : 0.26700                                              
REMARK   3    B33 (A**2) : -0.53390                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT                    (A) : 0.172               
REMARK   3   DPI (BLOW EQ-10) BASED ON R VALUE        (A) : NULL                
REMARK   3   DPI (BLOW EQ-9) BASED ON FREE R VALUE    (A) : NULL                
REMARK   3   DPI (CRUICKSHANK) BASED ON R VALUE       (A) : NULL                
REMARK   3   DPI (CRUICKSHANK) BASED ON FREE R VALUE  (A) : NULL                
REMARK   3                                                                      
REMARK   3   REFERENCES: BLOW, D. (2002) ACTA CRYST D58, 792-797                
REMARK   3               CRUICKSHANK, D.W.J. (1999) ACTA CRYST D55, 583-601     
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.953                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.932                         
REMARK   3                                                                      
REMARK   3   NUMBER OF GEOMETRIC FUNCTION TERMS DEFINED : 15                    
REMARK   3   TERM                          COUNT    WEIGHT   FUNCTION.          
REMARK   3    BOND LENGTHS              : 451    ; 2.000  ; HARMONIC            
REMARK   3    BOND ANGLES               : 589    ; 2.000  ; HARMONIC            
REMARK   3    TORSION ANGLES            : 189    ; 2.000  ; SINUSOIDAL          
REMARK   3    TRIGONAL CARBON PLANES    : 15     ; 2.000  ; HARMONIC            
REMARK   3    GENERAL PLANES            : 60     ; 5.000  ; HARMONIC            
REMARK   3    ISOTROPIC THERMAL FACTORS : 451    ; 20.000 ; HARMONIC            
REMARK   3    BAD NON-BONDED CONTACTS   : NULL   ; NULL   ; NULL                
REMARK   3    IMPROPER TORSIONS         : NULL   ; NULL   ; NULL                
REMARK   3    PSEUDOROTATION ANGLES     : NULL   ; NULL   ; NULL                
REMARK   3    CHIRAL IMPROPER TORSION   : 50     ; 5.000  ; SEMIHARMONIC        
REMARK   3    SUM OF OCCUPANCIES        : NULL   ; NULL   ; NULL                
REMARK   3    UTILITY DISTANCES         : NULL   ; NULL   ; NULL                
REMARK   3    UTILITY ANGLES            : NULL   ; NULL   ; NULL                
REMARK   3    UTILITY TORSION           : NULL   ; NULL   ; NULL                
REMARK   3    IDEAL-DIST CONTACT TERM   : 574    ; 4.000  ; SEMIHARMONIC        
REMARK   3                                                                      
REMARK   3   RMS DEVIATIONS FROM IDEAL VALUES.                                  
REMARK   3    BOND LENGTHS                       (A) : 0.010                    
REMARK   3    BOND ANGLES                  (DEGREES) : 0.96                     
REMARK   3    PEPTIDE OMEGA TORSION ANGLES (DEGREES) : 2.07                     
REMARK   3    OTHER TORSION ANGLES         (DEGREES) : 15.13                    
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 2                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    SELECTION: { A|1 - A|25 }                                         
REMARK   3    ORIGIN FOR THE GROUP (A):   43.6495   19.0632    7.0878           
REMARK   3    T TENSOR                                                          
REMARK   3     T11:   -0.0760 T22:   -0.0574                                    
REMARK   3     T33:   -0.0184 T12:   -0.0027                                    
REMARK   3     T13:    0.0008 T23:   -0.0216                                    
REMARK   3    L TENSOR                                                          
REMARK   3     L11:    2.2577 L22:    1.5010                                    
REMARK   3     L33:    2.8475 L12:   -0.0411                                    
REMARK   3     L13:   -1.5224 L23:    0.0278                                    
REMARK   3    S TENSOR                                                          
REMARK   3     S11:    0.0402 S12:   -0.0845 S13:    0.0554                     
REMARK   3     S21:   -0.0028 S22:   -0.0103 S23:    0.1028                     
REMARK   3     S31:    0.0756 S32:    0.0045 S33:   -0.0299                     
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    SELECTION: { B|2 - B|25 }                                         
REMARK   3    ORIGIN FOR THE GROUP (A):   52.8722   17.9864    5.1373           
REMARK   3    T TENSOR                                                          
REMARK   3     T11:   -0.0610 T22:   -0.0503                                    
REMARK   3     T33:   -0.0300 T12:    0.0035                                    
REMARK   3     T13:   -0.0038 T23:   -0.0005                                    
REMARK   3    L TENSOR                                                          
REMARK   3     L11:    2.8085 L22:    3.0809                                    
REMARK   3     L33:    4.5428 L12:    0.3026                                    
REMARK   3     L13:   -0.7983 L23:    0.0821                                    
REMARK   3    S TENSOR                                                          
REMARK   3     S11:   -0.0258 S12:   -0.0821 S13:   -0.0811                     
REMARK   3     S21:   -0.0672 S22:   -0.0430 S23:   -0.0653                     
REMARK   3     S31:    0.1507 S32:    0.0879 S33:    0.0688                     
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 3TWE COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-OCT-11.                  
REMARK 100 THE DEPOSITION ID IS D_1000068003.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 03-FEB-11                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 9.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 21-ID-F                            
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.97872                            
REMARK 200  MONOCHROMATOR                  : DIAMOND [111]                      
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARMOSAIC 225 MM CCD               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO, HKL-2000                    
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK, HKL-2000                
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 10522                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.360                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.1                               
REMARK 200  DATA REDUNDANCY                : 7.300                              
REMARK 200  R MERGE                    (I) : 0.04700                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 14.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.36                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.38                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 6.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.25800                            
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: PHASER                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 35.17                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.90                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 48% PEG400, 0.1M CHES PH 9.0, VAPOR      
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 293.15K                        
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 41                             
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       3555   -Y,X+1/2,Z+1/4                                          
REMARK 290       4555   Y+1/2,-X,Z+3/4                                          
REMARK 290       5555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290       6555   -X,-Y,Z                                                 
REMARK 290       7555   -Y+1/2,X,Z+3/4                                          
REMARK 290       8555   Y,-X+1/2,Z+1/4                                          
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       24.52150            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000       24.52150            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       20.61350            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       24.52150            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       10.30675            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       24.52150            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       30.92025            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       24.52150            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       24.52150            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       20.61350            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   7  0.000000 -1.000000  0.000000       24.52150            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       30.92025            
REMARK 290   SMTRY1   8  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000       24.52150            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       10.30675            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: 5480 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 7160 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -25.0 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       98.08600            
REMARK 350   BIOMT2   2  0.000000 -1.000000  0.000000       49.04300            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 1530 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 4790 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -7.0 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 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     GLY A    27                                                      
REMARK 465     GLY B     1                                                      
REMARK 465     GLY B    27                                                      
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     GLU B   5    CG   CD   OE1  OE2                                  
REMARK 470     SER B  26    OG                                                  
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   N    GLY A     1     C    ACE A    28              1.55            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACE A 28                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PGE B 28                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 3TWF   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3TWG   RELATED DB: PDB                                   
DBREF  3TWE A    1    27  PDB    3TWE     3TWE             1     27             
DBREF  3TWE B    1    27  PDB    3TWE     3TWE             1     27             
SEQRES   1 A   27  GLY ASN ALA ASP GLU LEU TYR LYS GLU LEU GLU ASP LEU          
SEQRES   2 A   27  GLN GLU ARG LEU ARG LYS LEU ARG LYS LYS LEU ARG SER          
SEQRES   3 A   27  GLY                                                          
SEQRES   1 B   27  GLY ASN ALA ASP GLU LEU TYR LYS GLU LEU GLU ASP LEU          
SEQRES   2 B   27  GLN GLU ARG LEU ARG LYS LEU ARG LYS LYS LEU ARG SER          
SEQRES   3 B   27  GLY                                                          
HET    ACE  A  28       3                                                       
HET    PGE  B  28      10                                                       
HETNAM     ACE ACETYL GROUP                                                     
HETNAM     PGE TRIETHYLENE GLYCOL                                               
FORMUL   3  ACE    C2 H4 O                                                      
FORMUL   4  PGE    C6 H14 O4                                                    
FORMUL   5  HOH   *40(H2 O)                                                     
HELIX    1   1 GLY A    1  SER A   26  1                                  26    
HELIX    2   2 ALA B    3  SER B   26  1                                  24    
SITE     1 AC1  4 GLY A   1  TYR A   7  ASN B   2  ARG B  25                    
SITE     1 AC2  9 GLU A   9  GLU B  11  GLU B  15  ARG B  16                    
SITE     2 AC2  9 LYS B  19  LEU B  20  LYS B  23  HOH B  38                    
SITE     3 AC2  9 HOH B  40                                                     
CRYST1   49.043   49.043   41.227  90.00  90.00  90.00 I 41         16          
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      0.020390  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.020390  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.024256        0.00000