HEADER    OXIDOREDUCTASE                          21-MAR-10   2X9J              
TITLE     STRUCTURE OF THE MUTANT D206N OF PHYCOERYTHROBILIN SYNTHASE PEBS FROM 
TITLE    2 THE CYANOPHAGE P-SSM2 IN COMPLEX WITH BOUND SUBSTRATE BILIVERDIN IXA 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PHYCOERYTHROBILIN SYNTHASE;                                
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 SYNONYM: (3Z)-PHYCOERYTHROBILIN \: FERREDOXIN OXIDOREDUCTASE,        
COMPND   5 PHYCOBILIN SYNTHASE, BILIVERDIN REDUCTASE;                           
COMPND   6 EC: 1.3.7.6;                                                         
COMPND   7 ENGINEERED: YES;                                                     
COMPND   8 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: PROCHLOROCOCCUS PHAGE P-SSM2;                   
SOURCE   3 ORGANISM_TAXID: 268746;                                              
SOURCE   4 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   5 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE   6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE   7 EXPRESSION_SYSTEM_PLASMID: PGEX-6P-3;                                
SOURCE   8 OTHER_DETAILS: CYANOPHAGE                                            
KEYWDS    OXIDOREDUCTASE                                                        
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    A.W.U.BUSCH,N.FRANKENBERG-DINKEL,E.HOFMANN                            
REVDAT   3   20-DEC-23 2X9J    1       REMARK                                   
REVDAT   2   25-MAY-11 2X9J    1       JRNL   REMARK                            
REVDAT   1   17-NOV-10 2X9J    0                                                
JRNL        AUTH   A.W.U.BUSCH,E.J.REIJERSE,W.LUBITZ,E.HOFMANN,                 
JRNL        AUTH 2 N.FRANKENBERG-DINKEL                                         
JRNL        TITL   RADICAL MECHANISM OF CYANOPHAGE PHYCOERYTHROBILIN SYNTHASE   
JRNL        TITL 2 (PEBS).                                                      
JRNL        REF    BIOCHEM.J.                    V. 433   469 2011              
JRNL        REFN                   ISSN 0264-6021                               
JRNL        PMID   21050180                                                     
JRNL        DOI    10.1042/BJ20101642                                           
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.85 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PHENIX (PHENIX.REFINE)                               
REMARK   3   AUTHORS     : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN            
REMARK   3               : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE,           
REMARK   3               : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER,            
REMARK   3               : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY,              
REMARK   3               : REETAL PAI,RANDY READ,JANE RICHARDSON,               
REMARK   3               : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI,           
REMARK   3               : NICHOLAS SAUTER,JACOB SMITH,LAURENT                  
REMARK   3               : STORONI,TOM TERWILLIGER,PETER ZWART                  
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : ML                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.85                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 39.69                          
REMARK   3   MIN(FOBS/SIGMA_FOBS)              : 2.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 44385                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.159                           
REMARK   3   R VALUE            (WORKING SET) : 0.157                           
REMARK   3   FREE R VALUE                     : 0.193                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.100                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2247                            
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (IN BINS).                           
REMARK   3   BIN  RESOLUTION RANGE  COMPL.    NWORK NFREE   RWORK  RFREE        
REMARK   3     1 39.6962 -  4.6591    1.00     2736   133  0.1380 0.1453        
REMARK   3     2  4.6591 -  3.6989    1.00     2591   201  0.1257 0.1536        
REMARK   3     3  3.6989 -  3.2316    1.00     2695    98  0.1446 0.1988        
REMARK   3     4  3.2316 -  2.9362    1.00     2673   117  0.1632 0.1873        
REMARK   3     5  2.9362 -  2.7258    1.00     2638   135  0.1620 0.2121        
REMARK   3     6  2.7258 -  2.5651    1.00     2636   144  0.1650 0.2357        
REMARK   3     7  2.5651 -  2.4367    1.00     2574   185  0.1675 0.2106        
REMARK   3     8  2.4367 -  2.3306    1.00     2583   203  0.1625 0.2012        
REMARK   3     9  2.3306 -  2.2409    1.00     2530   218  0.1676 0.2130        
REMARK   3    10  2.2409 -  2.1636    1.00     2779     0  0.1611 0.0000        
REMARK   3    11  2.1636 -  2.0959    1.00     2518   256  0.1645 0.1968        
REMARK   3    12  2.0959 -  2.0360    1.00     2724    22  0.1649 0.1717        
REMARK   3    13  2.0360 -  1.9824    1.00     2490   252  0.1745 0.2351        
REMARK   3    14  1.9824 -  1.9341    1.00     2501   269  0.1695 0.2405        
REMARK   3    15  1.9341 -  1.8901    1.00     2750    14  0.1891 0.1585        
REMARK   3    16  1.8901 -  1.8499    0.99     2720     0  0.1922 0.0000        
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED        : FLAT BULK SOLVENT MODEL                       
REMARK   3   SOLVENT RADIUS     : 1.11                                          
REMARK   3   SHRINKAGE RADIUS   : 0.90                                          
REMARK   3   K_SOL              : 0.34                                          
REMARK   3   B_SOL              : 40.26                                         
REMARK   3                                                                      
REMARK   3  ERROR ESTIMATES.                                                    
REMARK   3   COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED)     : 0.190            
REMARK   3   PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 20.470           
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 26.20                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -3.08300                                             
REMARK   3    B22 (A**2) : 8.42810                                              
REMARK   3    B33 (A**2) : -5.34510                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 1.81330                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  TWINNING INFORMATION.                                               
REMARK   3   FRACTION: NULL                                                     
REMARK   3   OPERATOR: NULL                                                     
REMARK   3                                                                      
REMARK   3  DEVIATIONS FROM IDEAL VALUES.                                       
REMARK   3                 RMSD          COUNT                                  
REMARK   3   BOND      :  0.016           3720                                  
REMARK   3   ANGLE     :  1.574           5038                                  
REMARK   3   CHIRALITY :  0.119            498                                  
REMARK   3   PLANARITY :  0.008            652                                  
REMARK   3   DIHEDRAL  : 17.724           1340                                  
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  NCS DETAILS                                                         
REMARK   3   NUMBER OF NCS GROUPS : 3                                           
REMARK   3   NCS GROUP : 1                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND RESSEQ 1234                     
REMARK   3     SELECTION          : CHAIN B AND RESSEQ 1234                     
REMARK   3     ATOM PAIRS NUMBER  : 43                                          
REMARK   3     RMSD               : 0.062                                       
REMARK   3   NCS GROUP : 2                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND (RESSEQ 22:54 OR RESSEQ 57:63   
REMARK   3                          OR RESSEQ 65:75 OR RESSEQ 77:131 OR         
REMARK   3                          RESSEQ 133:137 OR RESSEQ 144:165 OR         
REMARK   3                          RESSEQ 167:203 OR RESSEQ 206:233) AND       
REMARK   3                          BACKBONE                                    
REMARK   3     SELECTION          : CHAIN B AND (RESSEQ 22:54 OR RESSEQ 57:63   
REMARK   3                          OR RESSEQ 65:75 OR RESSEQ 77:131 OR         
REMARK   3                          RESSEQ 133:137 OR RESSEQ 144:165 OR         
REMARK   3                          RESSEQ 167:203 OR RESSEQ 206:233) AND       
REMARK   3                          BACKBONE                                    
REMARK   3     ATOM PAIRS NUMBER  : 796                                         
REMARK   3     RMSD               : 0.035                                       
REMARK   3   NCS GROUP : 3                                                      
REMARK   3    NCS OPERATOR : 1                                                  
REMARK   3     REFERENCE SELECTION: CHAIN A AND (RESSEQ 22:54 OR RESSEQ 57:63   
REMARK   3                          OR RESSEQ 65:75 OR RESSEQ 77:131 OR         
REMARK   3                          RESSEQ 133:137 OR RESSEQ 144:165 OR         
REMARK   3                          RESSEQ 167:203 OR RESSEQ 206:233) AND       
REMARK   3                          SIDECHAIN                                   
REMARK   3     SELECTION          : CHAIN B AND (RESSEQ 22:54 OR RESSEQ 57:63   
REMARK   3                          OR RESSEQ 65:75 OR RESSEQ 77:131 OR         
REMARK   3                          RESSEQ 133:137 OR RESSEQ 144:165 OR         
REMARK   3                          RESSEQ 167:203 OR RESSEQ 206:233) AND       
REMARK   3                          SIDECHAIN                                   
REMARK   3     ATOM PAIRS NUMBER  : 850                                         
REMARK   3     RMSD               : 0.197                                       
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2X9J COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 21-MAR-10.                  
REMARK 100 THE DEPOSITION ID IS D_1290043368.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-OCT-08                          
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               : ESRF                               
REMARK 200  BEAMLINE                       : ID23-2                             
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.8726                             
REMARK 200  MONOCHROMATOR                  : SILICON 111 CRYSTAL                
REMARK 200  OPTICS                         : MIRROR                             
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : XDS                                
REMARK 200  DATA SCALING SOFTWARE          : XSCALE                             
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 44404                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.850                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 49.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.8                               
REMARK 200  DATA REDUNDANCY                : 5.880                              
REMARK 200  R MERGE                    (I) : 0.08000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 16.2000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.85                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.90                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 5.93                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.45000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 4.260                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: MOLREP                                                
REMARK 200 STARTING MODEL: PDB ENTRY 2VGR                                       
REMARK 200                                                                      
REMARK 200 REMARK: NONE                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 49.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.41                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 170MM (NH4)2SO4, 20%PEG3350              
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-Z                                             
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       31.57500            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC                  
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 ENGINEERED RESIDUE IN CHAIN A, ASP 206 TO ASN                        
REMARK 400 ENGINEERED RESIDUE IN CHAIN B, ASP 206 TO ASN                        
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     1                                                      
REMARK 465     THR A     2                                                      
REMARK 465     LYS A     3                                                      
REMARK 465     ASN A     4                                                      
REMARK 465     PRO A     5                                                      
REMARK 465     ARG A     6                                                      
REMARK 465     ASN A     7                                                      
REMARK 465     ASN A     8                                                      
REMARK 465     LYS A     9                                                      
REMARK 465     PRO A    10                                                      
REMARK 465     LYS A    11                                                      
REMARK 465     LYS A    12                                                      
REMARK 465     ILE A    13                                                      
REMARK 465     LEU A    14                                                      
REMARK 465     ASP A    15                                                      
REMARK 465     SER A    16                                                      
REMARK 465     SER A    17                                                      
REMARK 465     TYR A    18                                                      
REMARK 465     LYS A    19                                                      
REMARK 465     SER A    20                                                      
REMARK 465     LYS A    21                                                      
REMARK 465     MET B     1                                                      
REMARK 465     THR B     2                                                      
REMARK 465     LYS B     3                                                      
REMARK 465     ASN B     4                                                      
REMARK 465     PRO B     5                                                      
REMARK 465     ARG B     6                                                      
REMARK 465     ASN B     7                                                      
REMARK 465     ASN B     8                                                      
REMARK 465     LYS B     9                                                      
REMARK 465     PRO B    10                                                      
REMARK 465     LYS B    11                                                      
REMARK 465     LYS B    12                                                      
REMARK 465     ILE B    13                                                      
REMARK 465     LEU B    14                                                      
REMARK 465     ASP B    15                                                      
REMARK 465     SER B    16                                                      
REMARK 465     SER B    17                                                      
REMARK 465     TYR B    18                                                      
REMARK 465     LYS B    19                                                      
REMARK 465     SER B    20                                                      
REMARK 465     LYS B    21                                                      
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    HIS A  70       -3.45     79.22                                   
REMARK 500    PHE A 144      168.01     69.98                                   
REMARK 500    PHE A 228      -59.37   -122.44                                   
REMARK 500    ASP B  55       40.14   -104.94                                   
REMARK 500    HIS B  70       -2.62     80.17                                   
REMARK 500    PHE B 144      169.75     64.62                                   
REMARK 500    LEU B 205       26.93     46.74                                   
REMARK 500    PHE B 228      -60.46   -123.86                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS                                         
REMARK 500                                                                      
REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH          
REMARK 500 CIS AND TRANS CONFORMATION.  CIS BONDS, IF ANY, ARE LISTED           
REMARK 500 ON CISPEP RECORDS.  TRANS IS DEFINED AS 180 +/- 30 AND               
REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES.                                  
REMARK 500                                 MODEL     OMEGA                      
REMARK 500 LEU A  205     ASN A  206                 -149.70                    
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 B2036        DISTANCE =  6.58 ANGSTROMS                       
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BLA A 1234                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BLA B 1234                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2VCL   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF THE PHYCOERYTHROBILIN SYNTHASE PEBS FROM THE            
REMARK 900 CYANOPHAGE P-SSM2 IN THE SUBSTRATE FREE FORM                         
REMARK 900 RELATED ID: 2X9I   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF THE MUTANT D105N OF PHYCOERYTHROBILIN SYNTHASE PEBS     
REMARK 900 FROM THE CYANOPHAGE P-SSM2 IN COMPLEX WITH BOUND SUBSTRATE           
REMARK 900 BILIVERDIN IXA                                                       
REMARK 900 RELATED ID: 2VCK   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF THE PHYCOERYTHROBILIN SYNTHASE PEBS FROM THE            
REMARK 900 CYANOPHAGE P-SSM2 IN COMPLEX WITH THE BOUND SUBSTRATE BILIVERDIN IXA 
REMARK 900 RELATED ID: 2VGR   RELATED DB: PDB                                   
REMARK 900 STRUCTURE OF THE WT-PHYCOERYTHROBILIN SYNTHASE PEBS FROM THE         
REMARK 900 CYANOPHAGE P-SSM2 IN COMPLEX WITH THE BOUND SUBSTRATE BILIVERDIN IXA 
DBREF  2X9J A    1   233  UNP    Q58MU6   PEBS_BPPRM       1    233             
DBREF  2X9J B    1   233  UNP    Q58MU6   PEBS_BPPRM       1    233             
SEQADV 2X9J ASN A  206  UNP  Q58MU6    ASP   206 ENGINEERED MUTATION            
SEQADV 2X9J ASN B  206  UNP  Q58MU6    ASP   206 ENGINEERED MUTATION            
SEQRES   1 A  233  MET THR LYS ASN PRO ARG ASN ASN LYS PRO LYS LYS ILE          
SEQRES   2 A  233  LEU ASP SER SER TYR LYS SER LYS THR ILE TRP GLN ASN          
SEQRES   3 A  233  TYR ILE ASP ALA LEU PHE GLU THR PHE PRO GLN LEU GLU          
SEQRES   4 A  233  ILE SER GLU VAL TRP ALA LYS TRP ASP GLY GLY ASN VAL          
SEQRES   5 A  233  THR LYS ASP GLY GLY ASP ALA LYS LEU THR ALA ASN ILE          
SEQRES   6 A  233  ARG THR GLY GLU HIS PHE LEU LYS ALA ARG GLU ALA HIS          
SEQRES   7 A  233  ILE VAL ASP PRO ASN SER ASP ILE TYR ASN THR ILE LEU          
SEQRES   8 A  233  TYR PRO LYS THR GLY ALA ASP LEU PRO CYS PHE GLY MET          
SEQRES   9 A  233  ASP LEU MET LYS PHE SER ASP LYS LYS VAL ILE ILE VAL          
SEQRES  10 A  233  PHE ASP PHE GLN HIS PRO ARG GLU LYS TYR LEU PHE SER          
SEQRES  11 A  233  VAL ASP GLY LEU PRO GLU ASP ASP GLY LYS TYR ARG PHE          
SEQRES  12 A  233  PHE GLU MET GLY ASN HIS PHE SER LYS ASN ILE PHE VAL          
SEQRES  13 A  233  ARG TYR CYS LYS PRO ASP GLU VAL ASP GLN TYR LEU ASP          
SEQRES  14 A  233  THR PHE LYS LEU TYR LEU THR LYS TYR LYS GLU MET ILE          
SEQRES  15 A  233  ASP ASN ASN LYS PRO VAL GLY GLU ASP THR THR VAL TYR          
SEQRES  16 A  233  SER ASP PHE ASP THR TYR MET THR GLU LEU ASN PRO VAL          
SEQRES  17 A  233  ARG GLY TYR MET LYS ASN LYS PHE GLY GLU GLY ARG SER          
SEQRES  18 A  233  GLU ALA PHE VAL ASN ASP PHE LEU PHE SER TYR LYS              
SEQRES   1 B  233  MET THR LYS ASN PRO ARG ASN ASN LYS PRO LYS LYS ILE          
SEQRES   2 B  233  LEU ASP SER SER TYR LYS SER LYS THR ILE TRP GLN ASN          
SEQRES   3 B  233  TYR ILE ASP ALA LEU PHE GLU THR PHE PRO GLN LEU GLU          
SEQRES   4 B  233  ILE SER GLU VAL TRP ALA LYS TRP ASP GLY GLY ASN VAL          
SEQRES   5 B  233  THR LYS ASP GLY GLY ASP ALA LYS LEU THR ALA ASN ILE          
SEQRES   6 B  233  ARG THR GLY GLU HIS PHE LEU LYS ALA ARG GLU ALA HIS          
SEQRES   7 B  233  ILE VAL ASP PRO ASN SER ASP ILE TYR ASN THR ILE LEU          
SEQRES   8 B  233  TYR PRO LYS THR GLY ALA ASP LEU PRO CYS PHE GLY MET          
SEQRES   9 B  233  ASP LEU MET LYS PHE SER ASP LYS LYS VAL ILE ILE VAL          
SEQRES  10 B  233  PHE ASP PHE GLN HIS PRO ARG GLU LYS TYR LEU PHE SER          
SEQRES  11 B  233  VAL ASP GLY LEU PRO GLU ASP ASP GLY LYS TYR ARG PHE          
SEQRES  12 B  233  PHE GLU MET GLY ASN HIS PHE SER LYS ASN ILE PHE VAL          
SEQRES  13 B  233  ARG TYR CYS LYS PRO ASP GLU VAL ASP GLN TYR LEU ASP          
SEQRES  14 B  233  THR PHE LYS LEU TYR LEU THR LYS TYR LYS GLU MET ILE          
SEQRES  15 B  233  ASP ASN ASN LYS PRO VAL GLY GLU ASP THR THR VAL TYR          
SEQRES  16 B  233  SER ASP PHE ASP THR TYR MET THR GLU LEU ASN PRO VAL          
SEQRES  17 B  233  ARG GLY TYR MET LYS ASN LYS PHE GLY GLU GLY ARG SER          
SEQRES  18 B  233  GLU ALA PHE VAL ASN ASP PHE LEU PHE SER TYR LYS              
HET    BLA  A1234      43                                                       
HET    BLA  B1234      43                                                       
HETNAM     BLA BILIVERDINE IX ALPHA                                             
FORMUL   3  BLA    2(C33 H34 N4 O6)                                             
FORMUL   5  HOH   *429(H2 O)                                                    
HELIX    1   1 TRP A   24  PHE A   35  1                                  12    
HELIX    2   2 LYS A  160  GLN A  166  5                                   7    
HELIX    3   3 TYR A  167  LYS A  186  1                                  20    
HELIX    4   4 ASP A  191  VAL A  194  5                                   4    
HELIX    5   5 TYR A  195  LEU A  205  1                                  11    
HELIX    6   6 PRO A  207  GLY A  217  1                                  11    
HELIX    7   7 GLY A  217  PHE A  228  1                                  12    
HELIX    8   8 TRP B   24  PHE B   35  1                                  12    
HELIX    9   9 LYS B  160  GLN B  166  5                                   7    
HELIX   10  10 TYR B  167  LYS B  186  1                                  20    
HELIX   11  11 ASP B  191  VAL B  194  5                                   4    
HELIX   12  12 TYR B  195  GLU B  204  1                                  10    
HELIX   13  13 PRO B  207  GLY B  217  1                                  11    
HELIX   14  14 GLY B  217  PHE B  228  1                                  12    
SHEET    1  AA 7 GLU A  39  THR A  53  0                                        
SHEET    2  AA 7 GLY A  56  GLY A  68 -1  O  GLY A  56   N  THR A  53           
SHEET    3  AA 7 PHE A  71  VAL A  80 -1  O  PHE A  71   N  GLY A  68           
SHEET    4  AA 7 ASP A  85  PRO A  93 -1  O  ILE A  86   N  ILE A  79           
SHEET    5  AA 7 CYS A 101  LYS A 108 -1  O  PHE A 102   N  LEU A  91           
SHEET    6  AA 7 VAL A 114  GLN A 121 -1  O  ILE A 115   N  MET A 107           
SHEET    7  AA 7 PHE A 155  CYS A 159 -1  O  PHE A 155   N  PHE A 118           
SHEET    1  BA 7 GLU B  39  THR B  53  0                                        
SHEET    2  BA 7 GLY B  56  GLY B  68 -1  O  GLY B  56   N  THR B  53           
SHEET    3  BA 7 PHE B  71  VAL B  80 -1  O  PHE B  71   N  GLY B  68           
SHEET    4  BA 7 ASP B  85  PRO B  93 -1  O  ILE B  86   N  ILE B  79           
SHEET    5  BA 7 CYS B 101  LYS B 108 -1  O  PHE B 102   N  LEU B  91           
SHEET    6  BA 7 VAL B 114  GLN B 121 -1  O  ILE B 115   N  MET B 107           
SHEET    7  BA 7 PHE B 155  CYS B 159 -1  O  PHE B 155   N  PHE B 118           
SITE     1 AC1 21 ILE A  79  ILE A  86  ASN A  88  ILE A  90                    
SITE     2 AC1 21 ASP A 105  MET A 107  ILE A 115  VAL A 117                    
SITE     3 AC1 21 GLN A 121  TYR A 141  ARG A 142  PHE A 143                    
SITE     4 AC1 21 PHE A 144  TYR A 158  MET A 202  ASN A 206                    
SITE     5 AC1 21 PRO A 207  VAL A 208  TYR A 211  HOH A2218                    
SITE     6 AC1 21 HOH A2219                                                     
SITE     1 AC2 23 ILE B  79  ILE B  86  ASN B  88  ILE B  90                    
SITE     2 AC2 23 ASP B 105  MET B 107  ILE B 115  VAL B 117                    
SITE     3 AC2 23 GLN B 121  TYR B 141  ARG B 142  PHE B 143                    
SITE     4 AC2 23 PHE B 144  PHE B 150  TYR B 158  MET B 202                    
SITE     5 AC2 23 ASN B 206  PRO B 207  VAL B 208  TYR B 211                    
SITE     6 AC2 23 PHE B 230  HOH B2209  HOH B2210                               
CRYST1   53.810   63.150   81.650  90.00 108.53  90.00 P 1 21 1      4          
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      0.018584  0.000000  0.006229        0.00000                         
SCALE2      0.000000  0.015835  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012917        0.00000                         
MTRIX1   1 -0.990974 -0.134053 -0.000499        0.27854    1                    
MTRIX2   1 -0.133894  0.989602  0.052547       -0.84641    1                    
MTRIX3   1 -0.006550  0.052140 -0.998618       32.30480    1