HEADER    BIOTIN-BINDING PROTEIN                  28-AUG-02   1MK5              
TITLE     WILDTYPE CORE-STREPTAVIDIN WITH BIOTIN AT 1.4A.                       
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: STREPTAVIDIN;                                              
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 FRAGMENT: CORE STREPTAVIDIN (RESIDUES 13-139);                       
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: STREPTOMYCES AVIDINII;                          
SOURCE   3 ORGANISM_TAXID: 1895;                                                
SOURCE   4 GENE: CORE STREPTAVIDIN;                                             
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21;                            
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 511693;                                     
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: BL21;                                      
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PET21A                                    
KEYWDS    HOMODIMER, BIOTIN-BINDING PROTEIN                                     
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    D.E.HYRE,I.LE TRONG,E.A.MERRITT,N.M.GREEN,R.E.STENKAMP,P.S.STAYTON    
REVDAT   4   14-FEB-24 1MK5    1       REMARK                                   
REVDAT   3   24-FEB-09 1MK5    1       VERSN                                    
REVDAT   2   14-MAR-06 1MK5    1       JRNL                                     
REVDAT   1   09-SEP-03 1MK5    0                                                
JRNL        AUTH   D.E.HYRE,I.LE TRONG,E.A.MERRITT,J.F.ECCLESTON,N.M.GREEN,     
JRNL        AUTH 2 R.E.STENKAMP,P.S.STAYTON                                     
JRNL        TITL   COOPERATIVE HYDROGEN BOND INTERACTIONS IN THE                
JRNL        TITL 2 STREPTAVIDIN-BIOTIN SYSTEM                                   
JRNL        REF    PROTEIN SCI.                  V.  15   459 2006              
JRNL        REFN                   ISSN 0961-8368                               
JRNL        PMID   16452627                                                     
JRNL        DOI    10.1110/PS.051970306                                         
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.40 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : SHELXL-97                                            
REMARK   3   AUTHORS     : G.M.SHELDRICK                                        
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.40                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 10.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 98.7                           
REMARK   3   CROSS-VALIDATION METHOD           : FREE R                         
REMARK   3   FREE R VALUE TEST SET SELECTION   : RANDOM                         
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (NO CUTOFF).                         
REMARK   3   R VALUE   (WORKING + TEST SET, NO CUTOFF) : 0.128                  
REMARK   3   R VALUE          (WORKING SET, NO CUTOFF) : 0.128                  
REMARK   3   FREE R VALUE                  (NO CUTOFF) : 0.189                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 5.000                  
REMARK   3   FREE R VALUE TEST SET COUNT   (NO CUTOFF) : 2201                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (NO CUTOFF) : 44020                  
REMARK   3                                                                      
REMARK   3  FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F).                     
REMARK   3   R VALUE   (WORKING + TEST SET, F>4SIG(F)) : 0.119                  
REMARK   3   R VALUE          (WORKING SET, F>4SIG(F)) : 0.040                  
REMARK   3   FREE R VALUE                  (F>4SIG(F)) : 0.178                  
REMARK   3   FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 5.000                  
REMARK   3   FREE R VALUE TEST SET COUNT   (F>4SIG(F)) : 1942                   
REMARK   3   TOTAL NUMBER OF REFLECTIONS   (F>4SIG(F)) : 38979                  
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS      : 1803                                          
REMARK   3   NUCLEIC ACID ATOMS : 0                                             
REMARK   3   HETEROGEN ATOMS    : 32                                            
REMARK   3   SOLVENT ATOMS      : 239                                           
REMARK   3                                                                      
REMARK   3  MODEL REFINEMENT.                                                   
REMARK   3   OCCUPANCY SUM OF NON-HYDROGEN ATOMS      : 2069.0                  
REMARK   3   OCCUPANCY SUM OF HYDROGEN ATOMS          : 1690.0                  
REMARK   3   NUMBER OF DISCRETELY DISORDERED RESIDUES : 12                      
REMARK   3   NUMBER OF LEAST-SQUARES PARAMETERS       : 18964                   
REMARK   3   NUMBER OF RESTRAINTS                     : 23730                   
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM RESTRAINT TARGET VALUES.                        
REMARK   3   BOND LENGTHS                         (A) : 0.012                   
REMARK   3   ANGLE DISTANCES                      (A) : 0.032                   
REMARK   3   SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000                   
REMARK   3   DISTANCES FROM RESTRAINT PLANES      (A) : 0.032                   
REMARK   3   ZERO CHIRAL VOLUMES               (A**3) : 0.059                   
REMARK   3   NON-ZERO CHIRAL VOLUMES           (A**3) : 0.072                   
REMARK   3   ANTI-BUMPING DISTANCE RESTRAINTS     (A) : 0.040                   
REMARK   3   RIGID-BOND ADP COMPONENTS         (A**2) : 0.003                   
REMARK   3   SIMILAR ADP COMPONENTS            (A**2) : 0.051                   
REMARK   3   APPROXIMATELY ISOTROPIC ADPS      (A**2) : 0.091                   
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED: NULL                                                  
REMARK   3                                                                      
REMARK   3  STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER                      
REMARK   3   SPECIAL CASE: NULL                                                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: ANISOTROPIC REFINEMENT REDUCED FREE R     
REMARK   3  (NO CUTOFF) BY ?                                                    
REMARK   4                                                                      
REMARK   4 1MK5 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 09-SEP-02.                  
REMARK 100 THE DEPOSITION ID IS D_1000016973.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 01-OCT-01                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 4.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ALS                                
REMARK 200  BEAMLINE                       : 5.0.1                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.00                               
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 44171                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.400                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.8                               
REMARK 200  DATA REDUNDANCY                : 8.700                              
REMARK 200  R MERGE                    (I) : 0.04300                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 30.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.40                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.45                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 93.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.20000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 4.500                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: ISOMORPHOUS                  
REMARK 200 SOFTWARE USED: NULL                                                  
REMARK 200 STARTING MODEL: 1DF8                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 33.80                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.86                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULPHATE, SODIUM ACETATE,       
REMARK 280  SODIUM CHLORIDE, PH 4.5, VAPOR DIFFUSION, SITTING DROP,             
REMARK 280  TEMPERATURE 293K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 2 2 2                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -X,Y,-Z                                                 
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   X+1/2,-Y+1/2,-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 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  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        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       23.15250            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       46.70700            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       51.96550            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       23.15250            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       46.70700            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       51.96550            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       23.15250            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       46.70700            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       51.96550            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       23.15250            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       46.70700            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       51.96550            
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: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 350   BIOMT1   2 -1.000000  0.000000  0.000000       46.30500            
REMARK 350   BIOMT2   2  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375      HOH A6126  LIES ON A SPECIAL POSITION.                          
REMARK 375      HOH B6078  LIES ON A SPECIAL POSITION.                          
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     ALA A    13                                                      
REMARK 465     PRO A   135                                                      
REMARK 465     SER A   136                                                      
REMARK 465     ALA A   137                                                      
REMARK 465     ALA A   138                                                      
REMARK 465     SER A   139                                                      
REMARK 465     ALA B    13                                                      
REMARK 465     GLU B    14                                                      
REMARK 465     ALA B    15                                                      
REMARK 465     SER B   136                                                      
REMARK 465     ALA B   137                                                      
REMARK 465     ALA B   138                                                      
REMARK 465     SER B   139                                                      
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    ARG A  84   CD  -  NE  -  CZ  ANGL. DEV. =   8.5 DEGREES          
REMARK 500    ARG A  84   NE  -  CZ  -  NH1 ANGL. DEV. =  -3.9 DEGREES          
REMARK 500    GLY A 113   O   -  C   -  N   ANGL. DEV. = -10.5 DEGREES          
REMARK 500    THR A 114   C   -  N   -  CA  ANGL. DEV. =  22.7 DEGREES          
REMARK 500    ASP B  36   CB  -  CG  -  OD1 ANGL. DEV. =  -6.6 DEGREES          
REMARK 500    ARG B  53   CD  -  NE  -  CZ  ANGL. DEV. =  10.9 DEGREES          
REMARK 500    ARG B  53   NH1 -  CZ  -  NH2 ANGL. DEV. =  -7.6 DEGREES          
REMARK 500    ARG B  53   NE  -  CZ  -  NH1 ANGL. DEV. =   5.7 DEGREES          
REMARK 500    THR B  57   CA  -  CB  -  CG2 ANGL. DEV. =  -9.3 DEGREES          
REMARK 500    ARG B  84   NE  -  CZ  -  NH1 ANGL. DEV. =  -5.7 DEGREES          
REMARK 500    GLU B 101   CA  -  CB  -  CG  ANGL. DEV. =  14.6 DEGREES          
REMARK 500    ARG B 103   NE  -  CZ  -  NH2 ANGL. DEV. =   4.6 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    SER A  52     -159.04     72.91                                   
REMARK 500    SER A  52     -165.34     63.10                                   
REMARK 500    GLU A 101       69.83   -112.41                                   
REMARK 500    SER B  52     -160.56     62.80                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500    TYR A  22         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTN A 5100                
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BTN B 5200                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1MEP   RELATED DB: PDB                                   
REMARK 900 STREPTAVIDIN DOUBLE MUTANT S45A/D128A WITH BIOTIN                    
REMARK 900 RELATED ID: 1SWE   RELATED DB: PDB                                   
REMARK 900 APO-CORE-STREPTAVIDIN IN COMPLEX WITH BIOTIN AT PH 4.5               
DBREF  1MK5 A   13   139  UNP    P22629   SAV_STRAV       37    163             
DBREF  1MK5 B   13   139  UNP    P22629   SAV_STRAV       37    163             
SEQRES   1 A  127  ALA GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU          
SEQRES   2 A  127  GLY SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA          
SEQRES   3 A  127  LEU THR GLY THR TYR GLU SER ALA VAL GLY ASN ALA GLU          
SEQRES   4 A  127  SER ARG TYR VAL LEU THR GLY ARG TYR ASP SER ALA PRO          
SEQRES   5 A  127  ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP THR VAL          
SEQRES   6 A  127  ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER ALA THR          
SEQRES   7 A  127  THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU ALA ARG          
SEQRES   8 A  127  ILE ASN THR GLN TRP LEU LEU THR SER GLY THR THR GLU          
SEQRES   9 A  127  ALA ASN ALA TRP LYS SER THR LEU VAL GLY HIS ASP THR          
SEQRES  10 A  127  PHE THR LYS VAL LYS PRO SER ALA ALA SER                      
SEQRES   1 B  127  ALA GLU ALA GLY ILE THR GLY THR TRP TYR ASN GLN LEU          
SEQRES   2 B  127  GLY SER THR PHE ILE VAL THR ALA GLY ALA ASP GLY ALA          
SEQRES   3 B  127  LEU THR GLY THR TYR GLU SER ALA VAL GLY ASN ALA GLU          
SEQRES   4 B  127  SER ARG TYR VAL LEU THR GLY ARG TYR ASP SER ALA PRO          
SEQRES   5 B  127  ALA THR ASP GLY SER GLY THR ALA LEU GLY TRP THR VAL          
SEQRES   6 B  127  ALA TRP LYS ASN ASN TYR ARG ASN ALA HIS SER ALA THR          
SEQRES   7 B  127  THR TRP SER GLY GLN TYR VAL GLY GLY ALA GLU ALA ARG          
SEQRES   8 B  127  ILE ASN THR GLN TRP LEU LEU THR SER GLY THR THR GLU          
SEQRES   9 B  127  ALA ASN ALA TRP LYS SER THR LEU VAL GLY HIS ASP THR          
SEQRES  10 B  127  PHE THR LYS VAL LYS PRO SER ALA ALA SER                      
HET    BTN  A5100      16                                                       
HET    BTN  B5200      16                                                       
HETNAM     BTN BIOTIN                                                           
FORMUL   3  BTN    2(C10 H16 N2 O3 S)                                           
FORMUL   5  HOH   *239(H2 O)                                                    
HELIX    1   1 THR A  115  LYS A  121  5                                   7    
HELIX    2   2 THR B  115  LYS B  121  5                                   7    
SHEET    1   A 9 GLY A  19  ASN A  23  0                                        
SHEET    2   A 9 THR A  28  ALA A  33 -1  O  PHE A  29   N  TRP A  21           
SHEET    3   A 9 ALA A  38  GLU A  44 -1  O  GLU A  44   N  THR A  28           
SHEET    4   A 9 TYR A  54  TYR A  60 -1  O  TYR A  54   N  TYR A  43           
SHEET    5   A 9 THR A  71  LYS A  80 -1  O  THR A  76   N  THR A  57           
SHEET    6   A 9 ASN A  85  VAL A  97 -1  O  TYR A  96   N  THR A  71           
SHEET    7   A 9 ARG A 103  SER A 112 -1  O  ARG A 103   N  VAL A  97           
SHEET    8   A 9 THR A 123  VAL A 133 -1  O  PHE A 130   N  ILE A 104           
SHEET    9   A 9 GLY A  19  ASN A  23 -1  N  THR A  20   O  VAL A 133           
SHEET    1   B 9 GLY B  19  ASN B  23  0                                        
SHEET    2   B 9 THR B  28  ALA B  33 -1  O  PHE B  29   N  TRP B  21           
SHEET    3   B 9 ALA B  38  GLU B  44 -1  O  THR B  42   N  ILE B  30           
SHEET    4   B 9 TYR B  54  TYR B  60 -1  O  TYR B  54   N  TYR B  43           
SHEET    5   B 9 THR B  71  LYS B  80 -1  O  THR B  76   N  THR B  57           
SHEET    6   B 9 ASN B  85  VAL B  97 -1  O  TYR B  96   N  THR B  71           
SHEET    7   B 9 ARG B 103  SER B 112 -1  O  ARG B 103   N  VAL B  97           
SHEET    8   B 9 THR B 123  THR B 131 -1  O  PHE B 130   N  ILE B 104           
SHEET    9   B 9 GLY B  19  ASN B  23 -1  N  TYR B  22   O  THR B 131           
SITE     1 AC1 15 ASN A  23  LEU A  25  SER A  27  TYR A  43                    
SITE     2 AC1 15 SER A  45  VAL A  47  GLY A  48  ASN A  49                    
SITE     3 AC1 15 TRP A  79  SER A  88  THR A  90  TRP A 108                    
SITE     4 AC1 15 ASP A 128  HOH A6154  TRP B 120                               
SITE     1 AC2 15 TRP A 120  ASN B  23  LEU B  25  SER B  27                    
SITE     2 AC2 15 TYR B  43  SER B  45  VAL B  47  ASN B  49                    
SITE     3 AC2 15 TRP B  79  SER B  88  THR B  90  TRP B 108                    
SITE     4 AC2 15 LEU B 110  ASP B 128  HOH B6205                               
CRYST1   46.305   93.414  103.931  90.00  90.00  90.00 I 2 2 2      16          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.021596  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.010705  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009622        0.00000