HEADER    PHOTOSYNTHETIC REACTION CENTER          19-JAN-93   1PPS              
OBSLTE     27-MAY-98 1PPS      2PPS                                             
TITLE     THREE-DIMENSIONAL STRUCTURE OF SYSTEM I OF PHOTOSYNTHESIS             
TITLE    2 AT 6 ANGSTROM RESOLUTION                                             
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE:;                                                           
COMPND   3 CHAIN: NULL;                                                         
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1                                                             
KEYWDS    PHOTOSYNTHETIC REACTION CENTER                                        
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    N.KRAUSS,W.HINRICHS,I.WITT,P.FROMME,W.PRIZKOW,Z.DAUTER,               
AUTHOR   2 C.BETZEL,K.S.WILSON,H.T.WITT,W.SAENGER                               
REVDAT   1   31-JUL-94 1PPS    0                                                
JRNL        AUTH   N.KRAUSS,W.HINRICHS,I.WITT,P.FROMME,W.PRIZKOW,               
JRNL        AUTH 2 Z.DAUTER,C.BETZEL,K.S.WILSON,H.T.WITT,W.SAENGER              
JRNL        TITL   THREE-DIMENSIONAL STRUCTURE OF SYSTEM I OF                   
JRNL        TITL 2 PHOTOSYNTHESIS AT 6 ANGSTROM RESOLUTION                      
JRNL        REF    NATURE                        V. 361   326 1993              
JRNL        REFN   ASTM NATUAS  UK ISSN 0028-0836                               
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   I.WITT,H.T.WITT,D.DIFIORE,M.ROEGNER,W.HINRICHS,              
REMARK   1  AUTH 2 W.SAENGER,J.GRANZIN,C.BETZEL,Z.DAUTER                        
REMARK   1  TITL   X-RAY CHARACTERIZATION OF SINGLE CRYSTALS OF THE             
REMARK   1  TITL 2 REACTION CENTER I OF WATER SPLITTING PHOTOSYNTHESIS          
REMARK   1  REF    BER.BUNSENGES.PHYS.CHEM.      V.  92  1503 1988              
REMARK   1  REFN   ASTM BBPCAX  GW ISSN 0005-9021                               
REMARK   2                                                                      
REMARK   2 RESOLUTION. 6.00 ANGSTROMS.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : NULL                                                 
REMARK   3   AUTHORS     : NULL                                                 
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 6.00                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : NULL                           
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : NULL                           
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 SET) : NULL                            
REMARK   3   FREE R VALUE                     : NULL                            
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : NULL                            
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
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           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
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            : 499                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 223                                     
REMARK   3   SOLVENT ATOMS            : 0                                       
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 COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : NULL                            
REMARK   3   BOND ANGLES            (DEGREES) : NULL                            
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : NULL                            
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : 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  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1PPS COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998                       
REMARK   5                                                                      
REMARK   5 1PPS TEMPERATURE FACTORS HAVE BEEN SET TO 20.0 FOR ALL "             
REMARK   5 ATOMS" 1PPS ARBITRARILY. 1PPS                                        
REMARK   6                                                                      
REMARK   6 1PPS ALTHOUGH A PHOTOSYSTEM I MONOMER CONSISTS OF 11                 
REMARK   6 SUBUNITS, 1PPS AN ASSIGNMENT OF THE IDENTIFIED HELICES TO            
REMARK   6 THESE SUBUNITS 1PPS IS IMPOSSIBLE AT THIS STAGE. ONLY FOR            
REMARK   6 THOSE HELICES 1PPS RELATED BY THE LOCAL SYMMETRY AXIS DO             
REMARK   6 THE DEPOSITORS 1PPS ASSUME THAT THEY PROBABLY BELONG TO THE          
REMARK   6 LARGE SUBUNITS A 1PPS AND B. 1PPS                                    
REMARK   7                                                                      
REMARK   7 1PPS HELICES A - N' HAVE BEEN DESCRIBED BY POLYALANINE               
REMARK   7 ALPHA 1PPS HELICES OF SUITABLE LENGTH AND ORIENTATION, FOR           
REMARK   7 WHICH ONLY 1PPS THE CARBON ALPHA POSITIONS ARE GIVEN (BUT            
REMARK   7 NOTE THAT THESE 1PPS ARE NOT TO BE INTERPRETED AS BACKBONE           
REMARK   7 COORDINATES, SEE 1PPS REMARK 4). FOR KINKED HELICES                  
REMARK   7 DIFFERENT FRAGMENTS HAVE 1PPS BEEN USED, E.G. "A1" AND "A2"          
REMARK   7 FOR HELIX "A" AND "G'1" AND 1PPS "G'2" FOR HELIX "G'". FOR           
REMARK   7 HELICES RELATED BY A LOCAL 1PPS APPROXIMATE TWO-FOLD                 
REMARK   7 ROTATION AXIS, THE FIRST LETTERS IN 1PPS THE HELIX                   
REMARK   7 IDENTIFIER ARE IDENTICAL, E.G. "B" AND "B'", 1PPS "C" AND "          
REMARK   7 C'". 1PPS                                                            
REMARK   8                                                                      
REMARK   8 1PPS RESIDUES FES CORRESPOND TO THE [4FE-4S] CLUSTERS OF             
REMARK   8 1PPS PHOTOSYSTEM I, FX, FA AND FB. ONLY THE POSITIONS OF             
REMARK   8 THE 1PPS CENTERS OF THESE CLUSTERS ARE GIVEN AND THEY ARE            
REMARK   8 1PPS IDENTIFIED AS "FE" ATOMS. 1PPS                                  
REMARK   9                                                                      
REMARK   9 1PPS RESIDUES CHL 505 - 506 PROBABLY BELONG TO THE ELECTRON          
REMARK   9 1PPS TRANSFER CHAIN OF PHOTOSYSTEM I. THE DIHYDROPORPHYRIN           
REMARK   9 1PPS PLANES ARE DESCRIBED BY A CENTRAL "MG" ATOM AND FOUR "          
REMARK   9 N" 1PPS ATOMS (SEE ALSO REMARK 4). 1PPS                              
REMARK  10                                                                      
REMARK  10 1PPS RESIDUES CHL 507 - 546 PROBABLY BELONG TO THE LIGHT             
REMARK  10 1PPS HARVESTING CHLOROPHYLL MOLECULES. THE DIHYDROPORPHYRIN          
REMARK  10 1PPS PLANES ARE DESCRIBED BY A CENTRAL "MG" ATOM AND FOUR "          
REMARK  10 N" 1PPS ATOMS (SEE ALSO REMARK 4). 1PPS                              
REMARK  11                                                                      
REMARK  11 1PPS THE TRANSFORMATION PRESENTED ON *MTRIX* RECORDS BELOW           
REMARK  11 1PPS REPRESENTS A LOCAL APPROXIMATE TWO-FOLD ROTATION AXIS,          
REMARK  11 1PPS WHICH PASSES THROUGH THE IRON-SULFUR CLUSTER AND                
REMARK  11 RELATES 1PPS HELICES A AND A', B AND B', ETC. THESE HELICES          
REMARK  11 PROBABLY 1PPS BELONG TO THE HOMOLOGOUS SUBUNITS A AND B OF           
REMARK  11 PHOTOSYSTEM I. 1PPS                                                  
REMARK  12                                                                      
REMARK  12 1PPS THE FOLLOWING TWO TRANSFORMATIONS WILL YIELD THE                
REMARK  12 COMPLETE 1PPS TRIMER WHEN APPLIED TO THE COORDINATES IN              
REMARK  12 THIS ENTRY. 1PPS THE TRANSFORMATIONS CORRESPOND TO THE               
REMARK  12 CRYSTALLOGRAPHIC 1PPS THREE-FOLD ROTATION AXIS. 1PPS 1PPS -          
REMARK  12 0.500 -0.866 0.000 287.0 1PPS 0.866 -0.500 0.000 0.0 1PPS            
REMARK  12 0.000 0.000 1.000 0.0 1PPS 1PPS -0.500 0.866 0.000 143.5             
REMARK  12 1PPS -0.866 -0.500 0.000 248.5 1PPS 0.000 0.000 1.000 0.0            
REMARK  12 1PPS                                                                 
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : NULL                               
REMARK 200  PH                             : NULL                               
REMARK 200  NUMBER OF CRYSTALS USED        : NULL                               
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : NULL                               
REMARK 200  RADIATION SOURCE               : NULL                               
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : NULL                               
REMARK 200  WAVELENGTH OR RANGE        (A) : NULL                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : NULL                               
REMARK 200  DETECTOR MANUFACTURER          : NULL                               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : NULL                               
REMARK 200  DATA SCALING SOFTWARE          : NULL                               
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : NULL                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : NULL                               
REMARK 200  RESOLUTION RANGE LOW       (A) : NULL                               
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : NULL                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : NULL                     
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: NULL                                           
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL                         
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): NULL                                      
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): NULL                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: NULL                                     
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63                             
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   -X,-Y,1/2+Z                                             
REMARK 290       5555   Y,-X+Y,1/2+Z                                            
REMARK 290       6555   X-Y,X,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 -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 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       83.50000            
REMARK 290   SMTRY1   5  0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   5 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       83.50000            
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       83.50000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT             
REMARK 300 WHICH CONSISTS OF 1 CHAIN(S). SEE REMARK 350 FOR                     
REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S).                
REMARK 350                                                                      
REMARK 350 GENERATING THE BIOMOLECULE                                           
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                                                       
SEQRES   1    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   2    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   3    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   4    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   5    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   6    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   7    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   8    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES   9    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  10    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  11    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  12    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  13    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  14    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  15    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  16    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  17    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  18    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  19    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  20    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  21    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  22    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  23    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  24    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  25    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  26    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  27    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  28    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  29    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  30    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  31    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  32    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  33    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  34    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  35    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  36    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  37    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  38    499  UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK UNK          
SEQRES  39    499  UNK UNK UNK UNK UNK                                          
HET    FS4    500       1                                                       
HET    FS4    501       1                                                       
HET    FS4    502       1                                                       
HET    CHL    503       5                                                       
HET    CHL    504       5                                                       
HET    CHL    505       5                                                       
HET    CHL    506       5                                                       
HET    CHL    507       5                                                       
HET    CHL    508       5                                                       
HET    CHL    509       5                                                       
HET    CHL    510       5                                                       
HET    CHL    511       5                                                       
HET    CHL    512       5                                                       
HET    CHL    513       5                                                       
HET    CHL    514       5                                                       
HET    CHL    515       5                                                       
HET    CHL    516       5                                                       
HET    CHL    517       5                                                       
HET    CHL    518       5                                                       
HET    CHL    519       5                                                       
HET    CHL    520       5                                                       
HET    CHL    521       5                                                       
HET    CHL    522       5                                                       
HET    CHL    523       5                                                       
HET    CHL    524       5                                                       
HET    CHL    525       5                                                       
HET    CHL    526       5                                                       
HET    CHL    527       5                                                       
HET    CHL    528       5                                                       
HET    CHL    529       5                                                       
HET    CHL    530       5                                                       
HET    CHL    531       5                                                       
HET    CHL    532       5                                                       
HET    CHL    533       5                                                       
HET    CHL    534       5                                                       
HET    CHL    535       5                                                       
HET    CHL    536       5                                                       
HET    CHL    537       5                                                       
HET    CHL    538       5                                                       
HET    CHL    539       5                                                       
HET    CHL    540       5                                                       
HET    CHL    541       5                                                       
HET    CHL    542       5                                                       
HET    CHL    543       5                                                       
HET    CHL    544       5                                                       
HET    CHL    545       5                                                       
HET    CHL    546       5                                                       
HETNAM     FS4 IRON/SULFUR CLUSTER                                              
HETNAM     CHL CHLOROPHYLL B                                                    
FORMUL   2  FS4    3(FE4 S4)                                                    
FORMUL   5  CHL    44(C55 H70 MG N4 O6 2+)                                      
HELIX    1  A1 UNK      1  UNK      7  1HELIX CLASS CANNOT                 7    
HELIX    2  A2 UNK      8  UNK     18  1REALLY BE DETERMINED              11    
HELIX    3   B UNK     19  UNK     29  1AT THIS RESOLUTION                11    
HELIX    4   C UNK     30  UNK     42  1                                  13    
HELIX    5  D1 UNK     43  UNK     49  1                                   7    
HELIX    6  D2 UNK     50  UNK     60  1                                  11    
HELIX    7   E UNK     61  UNK     67  1                                   7    
HELIX    8   F UNK     68  UNK     94  1                                  27    
HELIX    9  G1 UNK     95  UNK    103  1                                   9    
HELIX   10  G2 UNK    104  UNK    130  1                                  27    
HELIX   11   H UNK    131  UNK    149  1                                  19    
HELIX   12   I UNK    150  UNK    166  1                                  17    
HELIX   13   J UNK    167  UNK    175  1                                   9    
HELIX   14  K1 UNK    176  UNK    188  1                                  13    
HELIX   15  K2 UNK    189  UNK    195  1                                   7    
HELIX   16  L1 UNK    196  UNK    208  1                                  13    
HELIX   17  L2 UNK    209  UNK    217  1                                   9    
HELIX   18  M1 UNK    218  UNK    235  1                                  18    
HELIX   19  M2 UNK    236  UNK    244  1                                   9    
HELIX   20   N UNK    245  UNK    265  1                                  21    
HELIX   21   O UNK    266  UNK    274  1                                   9    
HELIX   22   P UNK    275  UNK    281  1                                   7    
HELIX   23   Q UNK    282  UNK    288  1                                   7    
HELIX   24   R UNK    289  UNK    301  1                                  13    
HELIX   25   S UNK    302  UNK    312  1                                  11    
HELIX   26 A'1 UNK    313  UNK    331  1                                  19    
HELIX   27 A'2 UNK    332  UNK    341  1                                  10    
HELIX   28  B' UNK    342  UNK    353  1                                  12    
HELIX   29  C' UNK    354  UNK    368  1                                  15    
HELIX   30  D' UNK    369  UNK    393  1                                  25    
HELIX   31  E' UNK    394  UNK    410  1                                  17    
HELIX   32  F' UNK    411  UNK    437  1                                  27    
HELIX   33 G'1 UNK    438  UNK    448  1                                  11    
HELIX   34 G'2 UNK    449  UNK    461  1                                  13    
HELIX   35  H' UNK    462  UNK    482  1                                  21    
HELIX   36  N' UNK    483  UNK    499  1                                  17    
CRYST1  287.000  287.000  167.000  90.00  90.00 120.00 P 63          6          
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      0.003484  0.002012  0.000000        0.00000                         
SCALE2      0.000000  0.004023  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.005988        0.00000