HEADER    DE NOVO PROTEIN                         04-FEB-02   1KYC              
TITLE     CRYSTAL STRUCTURE OF A DE NOVO DESIGNED TRIMERIC COILED-COIL PEPTIDE  
TITLE    2 STABLIZED BY IONIC INTERACTIONS                                      
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: SIN-GLU-GLU-LEU-ARG-ARG-ARG-ILE-GLU-GLU-LEU-GLU-ARG-ARG-   
COMPND   3 ILE-ARG-NH2;                                                         
COMPND   4 CHAIN: A;                                                            
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT;                            
SOURCE   4 ORGANISM_TAXID: 32630;                                               
SOURCE   5 OTHER_DETAILS: THIS PEPTIDE WAS CHEMICALLY SYNTHESIZED.              
KEYWDS    COILED COIL, DE NOVO DESIGN, ALPHA-HELIX, TRIMER, DE NOVO PROTEIN     
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    P.BURKHARD,S.IVANINSKII,A.LUSTIG                                      
REVDAT   4   16-AUG-23 1KYC    1       REMARK LINK                              
REVDAT   3   24-JUN-20 1KYC    1       SOURCE DBREF  LINK                       
REVDAT   2   24-FEB-09 1KYC    1       VERSN                                    
REVDAT   1   07-AUG-02 1KYC    0                                                
JRNL        AUTH   P.BURKHARD,S.IVANINSKII,A.LUSTIG                             
JRNL        TITL   IMPROVING COILED-COIL STABILITY BY OPTIMIZING IONIC          
JRNL        TITL 2 INTERACTIONS.                                                
JRNL        REF    J.MOL.BIOL.                   V. 318   901 2002              
JRNL        REFN                   ISSN 0022-2836                               
JRNL        PMID   12054832                                                     
JRNL        DOI    10.1016/S0022-2836(02)00114-6                                
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   P.BURKHARD,M.MEIER,A.LUSTIG                                  
REMARK   1  TITL   DESIGN OF A MINIMAL PROTEIN OLIGOMERIZATION DOMAIN BY A      
REMARK   1  TITL 2 STRUCTURAL APPROACH                                          
REMARK   1  REF    PROTEIN SCI.                  V.   9  2294 2000              
REMARK   1  REFN                   ISSN 0961-8368                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.45 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC                                               
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.45                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 30.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 2574                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE     (WORKING + TEST SET) : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.166                           
REMARK   3   FREE R VALUE                     : 0.217                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 139                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 17                                      
REMARK   3   SOLVENT ATOMS            : 23                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): NULL          
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : NULL  ; NULL                
REMARK   3    ANGLE DISTANCE                  (A) : NULL  ; NULL                
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : NULL  ; NULL                
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : NULL  ; NULL                
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : NULL  ; NULL                
REMARK   3    MULTIPLE TORSION                (A) : NULL  ; NULL                
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
REMARK   3    H-BOND (X-H...Y)                (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : NULL  ; NULL                
REMARK   3    STAGGERED                 (DEGREES) : NULL  ; NULL                
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1KYC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 12-FEB-02.                  
REMARK 100 THE DEPOSITION ID IS D_1000015463.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 05-JAN-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 100.0                              
REMARK 200  PH                             : 7.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : ELLIOTT GX-21                      
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : GRAPHITE                           
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 2574                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.450                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.2                               
REMARK 200  DATA REDUNDANCY                : 10.00                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.54000                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 20.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.45                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.50                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 72.1                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.30                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.13100                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 7.000                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: PDB ENTRY 1HQJ                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 28.17                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.71                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULFATE, HEPES, PH 7.5, VAPOR   
REMARK 280  DIFFUSION, HANGING DROP, TEMPERATURE 298K                           
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3 2                            
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z                                                
REMARK 290       3555   -X+Y,-X,Z                                               
REMARK 290       4555   Y,X,-Z                                                  
REMARK 290       5555   X-Y,-Y,-Z                                               
REMARK 290       6555   -X,-X+Y,-Z                                              
REMARK 290       7555   X+2/3,Y+1/3,Z+1/3                                       
REMARK 290       8555   -Y+2/3,X-Y+1/3,Z+1/3                                    
REMARK 290       9555   -X+Y+2/3,-X+1/3,Z+1/3                                   
REMARK 290      10555   Y+2/3,X+1/3,-Z+1/3                                      
REMARK 290      11555   X-Y+2/3,-Y+1/3,-Z+1/3                                   
REMARK 290      12555   -X+2/3,-X+Y+1/3,-Z+1/3                                  
REMARK 290      13555   X+1/3,Y+2/3,Z+2/3                                       
REMARK 290      14555   -Y+1/3,X-Y+2/3,Z+2/3                                    
REMARK 290      15555   -X+Y+1/3,-X+2/3,Z+2/3                                   
REMARK 290      16555   Y+1/3,X+2/3,-Z+2/3                                      
REMARK 290      17555   X-Y+1/3,-Y+2/3,-Z+2/3                                   
REMARK 290      18555   -X+1/3,-X+Y+2/3,-Z+2/3                                  
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 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   4 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   6 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   7  1.000000  0.000000  0.000000       16.69300            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000        9.63771            
REMARK 290   SMTRY3   7  0.000000  0.000000  1.000000       21.89700            
REMARK 290   SMTRY1   8 -0.500000 -0.866025  0.000000       16.69300            
REMARK 290   SMTRY2   8  0.866025 -0.500000  0.000000        9.63771            
REMARK 290   SMTRY3   8  0.000000  0.000000  1.000000       21.89700            
REMARK 290   SMTRY1   9 -0.500000  0.866025  0.000000       16.69300            
REMARK 290   SMTRY2   9 -0.866025 -0.500000  0.000000        9.63771            
REMARK 290   SMTRY3   9  0.000000  0.000000  1.000000       21.89700            
REMARK 290   SMTRY1  10 -0.500000  0.866025  0.000000       16.69300            
REMARK 290   SMTRY2  10  0.866025  0.500000  0.000000        9.63771            
REMARK 290   SMTRY3  10  0.000000  0.000000 -1.000000       21.89700            
REMARK 290   SMTRY1  11  1.000000  0.000000  0.000000       16.69300            
REMARK 290   SMTRY2  11  0.000000 -1.000000  0.000000        9.63771            
REMARK 290   SMTRY3  11  0.000000  0.000000 -1.000000       21.89700            
REMARK 290   SMTRY1  12 -0.500000 -0.866025  0.000000       16.69300            
REMARK 290   SMTRY2  12 -0.866025  0.500000  0.000000        9.63771            
REMARK 290   SMTRY3  12  0.000000  0.000000 -1.000000       21.89700            
REMARK 290   SMTRY1  13  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  13  0.000000  1.000000  0.000000       19.27542            
REMARK 290   SMTRY3  13  0.000000  0.000000  1.000000       43.79400            
REMARK 290   SMTRY1  14 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  14  0.866025 -0.500000  0.000000       19.27542            
REMARK 290   SMTRY3  14  0.000000  0.000000  1.000000       43.79400            
REMARK 290   SMTRY1  15 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  15 -0.866025 -0.500000  0.000000       19.27542            
REMARK 290   SMTRY3  15  0.000000  0.000000  1.000000       43.79400            
REMARK 290   SMTRY1  16 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  16  0.866025  0.500000  0.000000       19.27542            
REMARK 290   SMTRY3  16  0.000000  0.000000 -1.000000       43.79400            
REMARK 290   SMTRY1  17  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  17  0.000000 -1.000000  0.000000       19.27542            
REMARK 290   SMTRY3  17  0.000000  0.000000 -1.000000       43.79400            
REMARK 290   SMTRY1  18 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  18 -0.866025  0.500000  0.000000       19.27542            
REMARK 290   SMTRY3  18  0.000000  0.000000 -1.000000       43.79400            
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: TRIMERIC                          
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 350   BIOMT1   2 -0.500000 -0.866025  0.000000       50.07900            
REMARK 350   BIOMT2   2  0.866025 -0.500000  0.000000       28.91312            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 350   BIOMT2   3 -0.866025 -0.500000  0.000000       57.82625            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375 S    SO4 A 101  LIES ON A SPECIAL POSITION.                          
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     ARG A   5    CD   NE   CZ   NH1  NH2                             
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 101                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 102                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SIN A 0                   
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1HQJ   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF A DE NOVO DESIGNED TRIMERIC COILED- COIL        
REMARK 900 PEPTIDE                                                              
DBREF  1KYC A    1    16  PDB    1KYC     1KYC             1     16             
SEQRES   1 A   16  GLU GLU LEU ARG ARG ARG ILE GLU GLU LEU GLU ARG ARG          
SEQRES   2 A   16  ILE ARG NH2                                                  
HET    NH2  A  16       1                                                       
HET    SO4  A 101       5                                                       
HET    SO4  A 102       5                                                       
HET    SIN  A   0       7                                                       
HETNAM     NH2 AMINO GROUP                                                      
HETNAM     SO4 SULFATE ION                                                      
HETNAM     SIN SUCCINIC ACID                                                    
FORMUL   1  NH2    H2 N                                                         
FORMUL   2  SO4    2(O4 S 2-)                                                   
FORMUL   4  SIN    C4 H6 O4                                                     
FORMUL   5  HOH   *23(H2 O)                                                     
HELIX    1   1 GLU A    1  ARG A   15  1                                  15    
LINK         C1  SIN A   0                 N   GLU A   1     1555   1555  1.33  
LINK         C   ARG A  15                 N   NH2 A  16     1555   1555  1.25  
SITE     1 AC1  4 ARG A  13  ARG A  15  HOH A 106  HOH A 119                    
SITE     1 AC2  4 ARG A   5  ARG A   6  HOH A 107  HOH A 121                    
SITE     1 AC3  9 GLU A   1  GLU A   2  LEU A   3  ARG A   4                    
SITE     2 AC3  9 HOH A 109  HOH A 113  HOH A 114  HOH A 117                    
SITE     3 AC3  9 HOH A 123                                                     
CRYST1   33.386   33.386   65.691  90.00  90.00 120.00 H 3 2        18          
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      0.029953  0.017293  0.000000        0.00000                         
SCALE2      0.000000  0.034586  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.015223        0.00000