HEADER    ELECTRON TRANSPORT                      25-NOV-05   2C7L              
TITLE     LOW TEMPERATURE STRUCTURE OF PHYCOERYTHROCYANIN FROM MASTIGOCLADUS    
TITLE    2 LAMINOSUS                                                            
CAVEAT     2C7L    CYC A 1163 HAS WRONG CHIRALITY AT ATOM C2C CYC A 1163 HAS    
CAVEAT   2 2C7L    WRONG CHIRALITY AT ATOM C3C                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PHYCOERYTHROCYANIN ALPHA CHAIN;                            
COMPND   3 CHAIN: A;                                                            
COMPND   4 MOL_ID: 2;                                                           
COMPND   5 MOLECULE: PHYCOERYTHROCYANIN BETA CHAIN;                             
COMPND   6 CHAIN: B                                                             
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: MASTIGOCLADUS LAMINOSUS;                        
SOURCE   3 ORGANISM_TAXID: 83541;                                               
SOURCE   4 STRAIN: FISCHERELLA PCC7603;                                         
SOURCE   5 MOL_ID: 2;                                                           
SOURCE   6 ORGANISM_SCIENTIFIC: MASTIGOCLADUS LAMINOSUS;                        
SOURCE   7 ORGANISM_TAXID: 83541;                                               
SOURCE   8 STRAIN: FISCHERELLA PCC7603                                          
KEYWDS    PHYCOERYTHROCYANIN, PHYCOVIOLOBILIN, PHYCOCYANOBILIN, BILE PIGMENT,   
KEYWDS   2 CHROMOPHORE, ELECTRON TRANSPORT, PHOTOSYNTHESIS, PHYCOBILISOME,      
KEYWDS   3 ANTENNA PROTEIN                                                      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    M.SCHMIDT,A.KRASSELT,W.REUTER                                         
REVDAT   8   05-MAR-25 2C7L    1       CAVEAT COMPND SOURCE DBREF               
REVDAT   8 2                   1       HET    HETNAM FORMUL LINK                
REVDAT   8 3                   1       ATOM                                     
REVDAT   7   13-NOV-24 2C7L    1       REMARK                                   
REVDAT   6   01-MAY-24 2C7L    1       REMARK                                   
REVDAT   5   08-MAY-19 2C7L    1       REMARK                                   
REVDAT   4   03-APR-19 2C7L    1       REMARK LINK                              
REVDAT   3   24-FEB-09 2C7L    1       VERSN                                    
REVDAT   2   28-JUN-06 2C7L    1       REMARK HET    HETNAM FORMUL              
REVDAT   2 2                   1       LINK   SITE   TER    HETATM              
REVDAT   2 3                   1       CONECT                                   
REVDAT   1   25-JAN-06 2C7L    0                                                
JRNL        AUTH   M.SCHMIDT,A.KRASSELT,W.REUTER                                
JRNL        TITL   LOCAL PROTEIN FLEXIBILITY AS A PREREQUISITE FOR REVERSIBLE   
JRNL        TITL 2 CHROMOPHORE ISOMERIZATION IN ALPHA-PHYCOERYTHROCYANIN        
JRNL        REF    BIOCHIM.BIOPHYS.ACTA          V.1764    55 2006              
JRNL        REFN                   ISSN 0006-3002                               
JRNL        PMID   16377266                                                     
JRNL        DOI    10.1016/J.BBAPAP.2005.10.022                                 
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.85 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.85                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 39.50                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 10000.000                      
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 88.0                           
REMARK   3   NUMBER OF REFLECTIONS             : 11511                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.216                           
REMARK   3   FREE R VALUE                     : 0.270                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.400                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 576                             
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           : 8                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.85                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.98                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 69.40                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1038                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2220                       
REMARK   3   BIN FREE R VALUE                    : 0.2430                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 3.50                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 56                           
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            : 2534                                    
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 129                                     
REMARK   3   SOLVENT ATOMS            : 392                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 36.00                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 28.60                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : -1.10900                                             
REMARK   3    B22 (A**2) : -1.10900                                             
REMARK   3    B33 (A**2) : 2.21900                                              
REMARK   3    B12 (A**2) : 5.72700                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.31                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.26                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.40                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.20                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.012                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.610                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 21.10                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.510                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
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  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : NULL                                                 
REMARK   3   KSOL        : 0.25                                                 
REMARK   3   BSOL        : 10.00                                                
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  : PROTEIN.PARAM                                  
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: THE BLA CHROMOPHORES WERE ATTACHED TO     
REMARK   3  CYSTEINS WITH RESTRAINTS ADOPTED FROM METHIONINE AND TREATED IN     
REMARK   3  THE REFINEMENT AS IF THEY WERE REGULAR AMINO ACID RESIDUES.         
REMARK   4                                                                      
REMARK   4 2C7L COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 25-NOV-05.                  
REMARK 100 THE DEPOSITION ID IS D_1290026554.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : NULL                               
REMARK 200  TEMPERATURE           (KELVIN) : 110.0                              
REMARK 200  PH                             : 8.50                               
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          : ENRAF-NONIUS FR591                 
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                  : AREA DETECTOR                      
REMARK 200  DETECTOR MANUFACTURER          : SIEMENS                            
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : SAINT                              
REMARK 200  DATA SCALING SOFTWARE          : SAINT, SCALA                       
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 11512                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.850                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 39.530                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 88.5                               
REMARK 200  DATA REDUNDANCY                : 2.000                              
REMARK 200  R MERGE                    (I) : 0.10000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 7.2000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.85                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.00                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 71.8                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.50                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.24000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.200                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: SEE REMARK                                           
REMARK 200                                                                      
REMARK 200 REMARK: ALPHA-BETA STRUCTURE PUBLISHED BY DUERRING ET AL. 1990 WAS   
REMARK 200  USED AS A START                                                     
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 66.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.70                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 5% PEG 4000, 5 MMOL/L POTASSIUM          
REMARK 280  PHOSPHATE, PH 8.5, 4 DEG C, PEC 20 MG/ML, 5 MICO-LITER IN           
REMARK 280  HANGING DROPS, PH 8.50, VAPOR DIFFUSION, HANGING DROP,              
REMARK 280  TEMPERATURE 277K                                                    
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,Z+1/2                                             
REMARK 290       5555   Y,-X+Y,Z+1/2                                            
REMARK 290       6555   X-Y,X,Z+1/2                                             
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       19.79500            
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       19.79500            
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       19.79500            
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: HEXAMERIC                         
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: HEXAMERIC                  
REMARK 350 SOFTWARE USED: PQS                                                   
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -0.500000 -0.866025  0.000000       77.50000            
REMARK 350   BIOMT2   2  0.866025 -0.500000  0.000000      134.23394            
REMARK 350   BIOMT3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   3 -0.500000  0.866025  0.000000      -77.50000            
REMARK 350   BIOMT2   3 -0.866025 -0.500000  0.000000      134.23394            
REMARK 350   BIOMT3   3  0.000000  0.000000  1.000000        0.00000            
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND ANGLES                                       
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1)              
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   ATM2   ATM3                                     
REMARK 500    LEU B 160   CA  -  CB  -  CG  ANGL. DEV. =  14.2 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    GLN A  73       12.61   -140.82                                   
REMARK 500    ALA A  75       29.82    -79.67                                   
REMARK 500    THR A 143      -99.32    -53.71                                   
REMARK 500    HIS B  75      149.61     96.64                                   
REMARK 500    CYS B 109      -48.05   -156.86                                   
REMARK 500    ASN B 111      -78.98    -40.88                                   
REMARK 500    PRO B 123      -86.36    -42.64                                   
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 A2005        DISTANCE =  7.66 ANGSTROMS                       
REMARK 525    HOH A2006        DISTANCE =  7.53 ANGSTROMS                       
REMARK 525    HOH A2007        DISTANCE =  7.20 ANGSTROMS                       
REMARK 525    HOH A2009        DISTANCE =  9.41 ANGSTROMS                       
REMARK 525    HOH A2010        DISTANCE = 11.82 ANGSTROMS                       
REMARK 525    HOH A2011        DISTANCE = 11.47 ANGSTROMS                       
REMARK 525    HOH A2015        DISTANCE =  7.00 ANGSTROMS                       
REMARK 525    HOH A2016        DISTANCE =  9.26 ANGSTROMS                       
REMARK 525    HOH A2019        DISTANCE =  9.95 ANGSTROMS                       
REMARK 525    HOH A2020        DISTANCE =  5.98 ANGSTROMS                       
REMARK 525    HOH A2021        DISTANCE =  6.89 ANGSTROMS                       
REMARK 525    HOH A2023        DISTANCE =  7.40 ANGSTROMS                       
REMARK 525    HOH A2027        DISTANCE =  6.02 ANGSTROMS                       
REMARK 525    HOH A2028        DISTANCE =  7.99 ANGSTROMS                       
REMARK 525    HOH A2031        DISTANCE =  7.44 ANGSTROMS                       
REMARK 525    HOH A2040        DISTANCE = 12.38 ANGSTROMS                       
REMARK 525    HOH A2041        DISTANCE =  9.68 ANGSTROMS                       
REMARK 525    HOH A2042        DISTANCE =  7.98 ANGSTROMS                       
REMARK 525    HOH A2043        DISTANCE =  5.85 ANGSTROMS                       
REMARK 525    HOH A2046        DISTANCE =  9.39 ANGSTROMS                       
REMARK 525    HOH A2051        DISTANCE =  5.93 ANGSTROMS                       
REMARK 525    HOH A2052        DISTANCE =  6.14 ANGSTROMS                       
REMARK 525    HOH A2055        DISTANCE =  6.44 ANGSTROMS                       
REMARK 525    HOH A2057        DISTANCE =  9.54 ANGSTROMS                       
REMARK 525    HOH A2058        DISTANCE =  8.60 ANGSTROMS                       
REMARK 525    HOH A2059        DISTANCE =  7.16 ANGSTROMS                       
REMARK 525    HOH A2060        DISTANCE =  9.30 ANGSTROMS                       
REMARK 525    HOH A2061        DISTANCE =  9.08 ANGSTROMS                       
REMARK 525    HOH A2062        DISTANCE = 10.86 ANGSTROMS                       
REMARK 525    HOH A2068        DISTANCE =  6.45 ANGSTROMS                       
REMARK 525    HOH A2069        DISTANCE =  6.99 ANGSTROMS                       
REMARK 525    HOH A2070        DISTANCE =  6.34 ANGSTROMS                       
REMARK 525    HOH A2071        DISTANCE =  7.24 ANGSTROMS                       
REMARK 525    HOH A2075        DISTANCE =  6.88 ANGSTROMS                       
REMARK 525    HOH A2076        DISTANCE =  5.85 ANGSTROMS                       
REMARK 525    HOH A2082        DISTANCE =  9.39 ANGSTROMS                       
REMARK 525    HOH A2085        DISTANCE =  5.93 ANGSTROMS                       
REMARK 525    HOH A2086        DISTANCE =  8.43 ANGSTROMS                       
REMARK 525    HOH A2101        DISTANCE =  7.56 ANGSTROMS                       
REMARK 525    HOH A2102        DISTANCE =  6.99 ANGSTROMS                       
REMARK 525    HOH A2107        DISTANCE =  7.11 ANGSTROMS                       
REMARK 525    HOH A2108        DISTANCE =  6.63 ANGSTROMS                       
REMARK 525    HOH A2109        DISTANCE =  6.33 ANGSTROMS                       
REMARK 525    HOH A2110        DISTANCE =  7.52 ANGSTROMS                       
REMARK 525    HOH A2111        DISTANCE =  7.92 ANGSTROMS                       
REMARK 525    HOH A2112        DISTANCE =  7.82 ANGSTROMS                       
REMARK 525    HOH A2118        DISTANCE =  5.84 ANGSTROMS                       
REMARK 525    HOH A2119        DISTANCE =  7.30 ANGSTROMS                       
REMARK 525    HOH A2126        DISTANCE =  7.04 ANGSTROMS                       
REMARK 525    HOH A2127        DISTANCE =  7.73 ANGSTROMS                       
REMARK 525    HOH A2128        DISTANCE =  6.23 ANGSTROMS                       
REMARK 525    HOH A2129        DISTANCE =  6.09 ANGSTROMS                       
REMARK 525    HOH A2130        DISTANCE =  6.66 ANGSTROMS                       
REMARK 525    HOH A2131        DISTANCE =  6.69 ANGSTROMS                       
REMARK 525    HOH A2136        DISTANCE =  6.55 ANGSTROMS                       
REMARK 525    HOH B2002        DISTANCE =  8.19 ANGSTROMS                       
REMARK 525    HOH B2004        DISTANCE =  9.76 ANGSTROMS                       
REMARK 525    HOH B2005        DISTANCE =  8.99 ANGSTROMS                       
REMARK 525    HOH B2006        DISTANCE =  5.88 ANGSTROMS                       
REMARK 525    HOH B2008        DISTANCE =  7.14 ANGSTROMS                       
REMARK 525    HOH B2010        DISTANCE =  6.88 ANGSTROMS                       
REMARK 525    HOH B2011        DISTANCE =  9.53 ANGSTROMS                       
REMARK 525    HOH B2012        DISTANCE = 10.65 ANGSTROMS                       
REMARK 525    HOH B2013        DISTANCE =  8.23 ANGSTROMS                       
REMARK 525    HOH B2017        DISTANCE =  7.33 ANGSTROMS                       
REMARK 525    HOH B2023        DISTANCE =  7.06 ANGSTROMS                       
REMARK 525    HOH B2024        DISTANCE =  7.11 ANGSTROMS                       
REMARK 525    HOH B2025        DISTANCE =  7.79 ANGSTROMS                       
REMARK 525    HOH B2026        DISTANCE = 10.35 ANGSTROMS                       
REMARK 525    HOH B2027        DISTANCE =  7.22 ANGSTROMS                       
REMARK 525    HOH B2029        DISTANCE =  9.64 ANGSTROMS                       
REMARK 525    HOH B2030        DISTANCE =  6.89 ANGSTROMS                       
REMARK 525    HOH B2031        DISTANCE =  7.68 ANGSTROMS                       
REMARK 525    HOH B2032        DISTANCE =  9.65 ANGSTROMS                       
REMARK 525    HOH B2036        DISTANCE =  7.03 ANGSTROMS                       
REMARK 525    HOH B2037        DISTANCE =  8.77 ANGSTROMS                       
REMARK 525    HOH B2038        DISTANCE =  8.07 ANGSTROMS                       
REMARK 525    HOH B2039        DISTANCE =  6.71 ANGSTROMS                       
REMARK 525    HOH B2048        DISTANCE =  7.71 ANGSTROMS                       
REMARK 525    HOH B2049        DISTANCE =  6.58 ANGSTROMS                       
REMARK 525    HOH B2050        DISTANCE =  7.97 ANGSTROMS                       
REMARK 525    HOH B2051        DISTANCE =  8.12 ANGSTROMS                       
REMARK 525    HOH B2063        DISTANCE =  6.18 ANGSTROMS                       
REMARK 525    HOH B2065        DISTANCE =  7.06 ANGSTROMS                       
REMARK 525    HOH B2066        DISTANCE =  8.12 ANGSTROMS                       
REMARK 525    HOH B2069        DISTANCE =  7.77 ANGSTROMS                       
REMARK 525    HOH B2070        DISTANCE =  7.37 ANGSTROMS                       
REMARK 525    HOH B2072        DISTANCE =  6.66 ANGSTROMS                       
REMARK 525    HOH B2080        DISTANCE =  6.07 ANGSTROMS                       
REMARK 525    HOH B2085        DISTANCE =  7.49 ANGSTROMS                       
REMARK 525    HOH B2094        DISTANCE =  6.70 ANGSTROMS                       
REMARK 525    HOH B2097        DISTANCE =  7.09 ANGSTROMS                       
REMARK 525    HOH B2098        DISTANCE =  7.05 ANGSTROMS                       
REMARK 525    HOH B2099        DISTANCE =  6.50 ANGSTROMS                       
REMARK 525    HOH B2103        DISTANCE =  7.47 ANGSTROMS                       
REMARK 525    HOH B2110        DISTANCE =  6.91 ANGSTROMS                       
REMARK 525    HOH B2118        DISTANCE =  6.97 ANGSTROMS                       
REMARK 525    HOH B2121        DISTANCE =  5.95 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 A1163                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CYC B1173                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CYC B1174                 
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2C7J   RELATED DB: PDB                                   
REMARK 900 LAUE STRUCTURE OF PHYCOERYTHROCYANIN FROM MASTIGOCLADUS LAMINOSUS    
REMARK 900 RELATED ID: 2C7K   RELATED DB: PDB                                   
REMARK 900 LOW TEMPERATURE STRUCTURE OF PHYCOERYTHROCYANIN FROM MASTIGOCLADUS   
REMARK 900 LAMINOSUS                                                            
DBREF  2C7L A    1   162  UNP    P00309   PHEA_MASLA       1    162             
DBREF  2C7L B    1   172  UNP    P00313   PHEB_MASLA       1    172             
SEQRES   1 A  162  MET LYS THR PRO LEU THR GLU ALA ILE ALA ALA ALA ASP          
SEQRES   2 A  162  LEU ARG GLY SER TYR LEU SER ASN THR GLU LEU GLN ALA          
SEQRES   3 A  162  VAL PHE GLY ARG PHE ASN ARG ALA ARG ALA GLY LEU GLU          
SEQRES   4 A  162  ALA ALA ARG ALA PHE ALA ASN ASN GLY LYS LYS TRP ALA          
SEQRES   5 A  162  GLU ALA ALA ALA ASN HIS VAL TYR GLN LYS PHE PRO TYR          
SEQRES   6 A  162  THR THR GLN MET GLN GLY PRO GLN TYR ALA SER THR PRO          
SEQRES   7 A  162  GLU GLY LYS ALA LYS CYS VAL ARG ASP ILE ASP HIS TYR          
SEQRES   8 A  162  LEU ARG THR ILE SER TYR CYS CYS VAL VAL GLY GLY THR          
SEQRES   9 A  162  GLY PRO LEU ASP ASP TYR VAL VAL ALA GLY LEU LYS GLU          
SEQRES  10 A  162  PHE ASN SER ALA LEU GLY LEU SER PRO SER TRP TYR ILE          
SEQRES  11 A  162  ALA ALA LEU GLU PHE VAL ARG ASP ASN HIS GLY LEU THR          
SEQRES  12 A  162  GLY ASP VAL ALA GLY GLU ALA ASN THR TYR ILE ASN TYR          
SEQRES  13 A  162  ALA ILE ASN ALA LEU SER                                      
SEQRES   1 B  172  MET LEU ASP ALA PHE SER ARG VAL VAL GLU GLN ALA ASP          
SEQRES   2 B  172  LYS LYS GLY ALA TYR LEU SER ASN ASP GLU ILE ASN ALA          
SEQRES   3 B  172  LEU GLN ALA ILE VAL ALA ASP SER ASN LYS ARG LEU ASP          
SEQRES   4 B  172  VAL VAL ASN ARG LEU THR SER ASN ALA SER SER ILE VAL          
SEQRES   5 B  172  ALA ASN ALA TYR ARG ALA LEU VAL ALA GLU ARG PRO GLN          
SEQRES   6 B  172  VAL PHE ASN PRO GLY GLY PRO CYS PHE HIS HIS ARG ASN          
SEQRES   7 B  172  GLN ALA ALA CYS ILE ARG ASP LEU GLY PHE ILE LEU ARG          
SEQRES   8 B  172  TYR VAL THR TYR SER VAL LEU ALA GLY ASP THR SER VAL          
SEQRES   9 B  172  MET ASP ASP ARG CYS LEU ASN GLY LEU ARG GLU THR TYR          
SEQRES  10 B  172  GLN ALA LEU GLY THR PRO GLY ASP ALA VAL ALA SER GLY          
SEQRES  11 B  172  ILE LYS LYS MET LYS GLU ALA ALA LEU LYS ILE ALA ASN          
SEQRES  12 B  172  ASP PRO ASN GLY ILE THR LYS GLY ASP CYS SER GLN LEU          
SEQRES  13 B  172  MET SER GLU LEU ALA SER TYR PHE ASP ARG ALA ALA ALA          
SEQRES  14 B  172  ALA VAL ALA                                                  
HET    CYC  A1163      43                                                       
HET    CYC  B1173      43                                                       
HET    CYC  B1174      43                                                       
HETNAM     CYC PHYCOCYANOBILIN                                                  
FORMUL   3  CYC    3(C33 H40 N4 O6)                                             
FORMUL   6  HOH   *392(H2 O)                                                    
HELIX    1   1 THR A    3  GLY A   16  1                                  14    
HELIX    2   2 SER A   20  ASN A   32  1                                  13    
HELIX    3   3 ARG A   33  PHE A   63  1                                  31    
HELIX    4   4 PRO A   64  THR A   67  5                                   4    
HELIX    5   5 THR A   77  GLY A  102  1                                  26    
HELIX    6   6 THR A  104  VAL A  111  1                                   8    
HELIX    7   7 GLY A  114  LEU A  122  1                                   9    
HELIX    8   8 SER A  125  HIS A  140  1                                  16    
HELIX    9   9 GLY A  144  SER A  162  1                                  19    
HELIX   10  10 ASP B    3  LYS B   14  1                                  12    
HELIX   11  11 SER B   20  ASP B   33  1                                  14    
HELIX   12  12 ASP B   33  ASN B   47  1                                  15    
HELIX   13  13 ASN B   47  ARG B   63  1                                  17    
HELIX   14  14 ARG B   63  ASN B   68  1                                   6    
HELIX   15  15 HIS B   75  GLY B  100  1                                  26    
HELIX   16  16 THR B  102  ARG B  108  1                                   7    
HELIX   17  17 GLY B  112  GLY B  121  1                                  10    
HELIX   18  18 GLY B  124  ASN B  143  1                                  20    
HELIX   19  19 CYS B  153  ALA B  169  1                                  17    
LINK         SG  CYS A  84                 CAC CYC A1163     1555   1555  1.74  
LINK         SG  CYS B  82                 CAC CYC B1173     1555   1555  1.76  
LINK         SG  CYS B 153                 CAC CYC B1174     1555   1555  1.77  
SITE     1 AC1 17 ALA A  75  LYS A  83  CYS A  84  ARG A  86                    
SITE     2 AC1 17 ASP A  87  TYR A 110  PHE A 118  LEU A 122                    
SITE     3 AC1 17 LEU A 124  TRP A 128  TYR A 129  ARG B  57                    
SITE     4 AC1 17 VAL B  60  PHE B  74  HIS B  75  HIS B  76                    
SITE     5 AC1 17 GLN B  79                                                     
SITE     1 AC2 15 CYS B  73  ARG B  77  ASN B  78  CYS B  82                    
SITE     2 AC2 15 ARG B  84  ASP B  85  LEU B  86  PHE B  88                    
SITE     3 AC2 15 ARG B 108  CYS B 109  LEU B 113  LEU B 120                    
SITE     4 AC2 15 THR B 122  VAL B 127  HOH B2194                               
SITE     1 AC3 21 LEU A  24  GLN A  25  PHE A  28  ASN B  35                    
SITE     2 AC3 21 LYS B  36  LEU B  38  ASP B  39  ASN B  42                    
SITE     3 AC3 21 ALA B 142  ASN B 143  ASP B 144  ILE B 148                    
SITE     4 AC3 21 THR B 149  LYS B 150  GLY B 151  CYS B 153                    
SITE     5 AC3 21 SER B 154  SER B 158  HOH B2178  HOH B2195                    
SITE     6 AC3 21 HOH B2197                                                     
CRYST1  155.000  155.000   39.590  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      0.006452  0.003725  0.000000        0.00000                         
SCALE2      0.000000  0.007450  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.025259        0.00000