HEADER    DNA/ANTIBIOTIC                          10-AUG-94   185D              
TITLE     SEQUENCE SPECIFICITY OF QUINOXALINE ANTIBIOTICS. 1. SOLUTION STRUCTURE
TITLE    2 OF A 1:1 COMPLEX BETWEEN TRIOSTIN A AND [D(GACGTC)]2 AND COMPARISON  
TITLE    3 WITH THE SOLUTION STRUCTURE OF THE [N-MECYS3, N-MECYS7]TANDEM-       
TITLE    4 [D(GATATC)]2 COMPLEX                                                 
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: TRIOSTIN A;                                                
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: DNA (5'-D(*GP*AP*CP*GP*TP*C)-3');                          
COMPND   7 CHAIN: C, D;                                                         
COMPND   8 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 ORGANISM_SCIENTIFIC: STREPTOMYCINEAE;                                
SOURCE   4 ORGANISM_TAXID: 1931;                                                
SOURCE   5 MOL_ID: 2;                                                           
SOURCE   6 SYNTHETIC: YES                                                       
KEYWDS    BISINTERCALATOR, DEPSIPEPTIDE, QUINOXALINE, ANTIBIOTIC, ANTITUMOR,    
KEYWDS   2 DNA-ANTIBIOTIC COMPLEX                                               
EXPDTA    SOLUTION NMR                                                          
NUMMDL    5                                                                     
AUTHOR    K.J.ADDESS,J.FEIGON                                                   
REVDAT   5   01-NOV-17 185D    1       REMARK                                   
REVDAT   4   27-JUL-11 185D    1       DBREF  HETATM REMARK                     
REVDAT   3   13-JUL-11 185D    1       VERSN                                    
REVDAT   2   24-FEB-09 185D    1       VERSN                                    
REVDAT   1   07-FEB-95 185D    0                                                
JRNL        AUTH   K.J.ADDESS,J.FEIGON                                          
JRNL        TITL   SEQUENCE SPECIFICITY OF QUINOXALINE ANTIBIOTICS. 1. SOLUTION 
JRNL        TITL 2 STRUCTURE OF A 1:1 COMPLEX BETWEEN TRIOSTIN A AND            
JRNL        TITL 3 [D(GACGTC)]2 AND COMPARISON WITH THE SOLUTION STRUCTURE OF   
JRNL        TITL 4 THE [N-MECYS3,N-MECYS7]TANDEM-[D(GATATC)]2 COMPLEX.          
JRNL        REF    BIOCHEMISTRY                  V.  33 12386 1994              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   7918461                                                      
JRNL        DOI    10.1021/BI00207A005                                          
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   K.J.ADDESS,J.S.SINSHEIMER,J.FEIGON                           
REMARK   1  TITL   SOLUTION STRUCTURE OF A COMPLEX BETWEEN                      
REMARK   1  TITL 2 [N-MECYS3,N-MECYS7]TANDEM AND [D(GATATC)]2                   
REMARK   1  REF    BIOCHEMISTRY                  V.  32  2498 1993              
REMARK   1  REFN                   ISSN 0006-2960                               
REMARK   1  PMID   8448108                                                      
REMARK   1  DOI    10.1021/BI00061A006                                          
REMARK   2                                                                      
REMARK   2 RESOLUTION. NOT APPLICABLE.                                          
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR                                               
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NUMBER OF ATOMS PRESENT IN ENTRY.         
REMARK   3  NUMBER OF PROTEIN ATOMS 328 NUMBER OF NUCLEIC ACID ATOMS 48         
REMARK   3  NUMBER OF SOLVENT ATOMS 240 NUMBER OF HETEROGEN ATOMS 40 AVERAGE    
REMARK   3  PAIRWISE RMSD BOND DISTANCES FOR HEAVY ATOM POSITIONS FOR 5         
REMARK   3  STRUCTURES: 1.37 ANGSTROMS.                                         
REMARK   4                                                                      
REMARK   4 185D COMPLIES WITH FORMAT V. 3.15, 01-DEC-08                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.                                
REMARK 100 THE DEPOSITION ID IS D_1000170189.                                   
REMARK 210                                                                      
REMARK 210 EXPERIMENTAL DETAILS                                                 
REMARK 210  EXPERIMENT TYPE                : NMR                                
REMARK 210  TEMPERATURE           (KELVIN) : NULL                               
REMARK 210  PH                             : NULL                               
REMARK 210  IONIC STRENGTH                 : NULL                               
REMARK 210  PRESSURE                       : NULL                               
REMARK 210  SAMPLE CONTENTS                : NULL                               
REMARK 210                                                                      
REMARK 210  NMR EXPERIMENTS CONDUCTED      : NULL                               
REMARK 210  SPECTROMETER FIELD STRENGTH    : NULL                               
REMARK 210  SPECTROMETER MODEL             : NULL                               
REMARK 210  SPECTROMETER MANUFACTURER      : NULL                               
REMARK 210                                                                      
REMARK 210  STRUCTURE DETERMINATION.                                            
REMARK 210   SOFTWARE USED                 : NULL                               
REMARK 210   METHOD USED                   : DISTANCE GEOMETRY, MOLECULAR       
REMARK 210                                   DYNAMICS                           
REMARK 210                                                                      
REMARK 210 CONFORMERS, NUMBER CALCULATED   : NULL                               
REMARK 210 CONFORMERS, NUMBER SUBMITTED    : 5                                  
REMARK 210 CONFORMERS, SELECTION CRITERIA  : NULL                               
REMARK 210                                                                      
REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : NULL                
REMARK 210                                                                      
REMARK 210 REMARK: TRIOSTIN A CONTAINS TWO PLANAR AROMATIC QUINOXALINE RINGS    
REMARK 210  THAT ARE COVALENTLY ATTACHED TO A CYCLIC OCTADEPSIPEPTIDE RING      
REMARK 210  REPRESENTED BY CHAINS A AND B IN THIS ENTRY. THERE IS A             
REMARK 210  DISULFIDE BRIDGE LINKING CYS A 4 TO CYS B 9. BOTH CYS AND VAL       
REMARK 210  RESIDUES CONTAIN METHYLATED AMIDE NITROGENS; THE TWO D-SER          
REMARK 210  RESIDUES ARE AMIDE BONDED TO THE TWO QUINOXALINE RINGS.             
REMARK 215                                                                      
REMARK 215 NMR STUDY                                                            
REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION           
REMARK 215 NMR DATA.  PROTEIN DATA BANK CONVENTIONS REQUIRE THAT                
REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON              
REMARK 215 THESE RECORDS ARE MEANINGLESS.                                       
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 2080 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 2840 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -3.0 KCAL/MOL                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, C, D                               
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 TRIOSTIN IS A BICYCLIC OCTADEPSIPEPTIDE, A MEMBER                    
REMARK 400  OF THE QUINOXALINE CLASS OF ANTIBIOTICS.                            
REMARK 400  HERE, TRIOSTIN IS REPRESENTED BY GROUPING TOGETHER THE              
REMARK 400  SEQUENCE (SEQRES) AND THE TWO LIGANDS (HET) QUI                     
REMARK 400                                                                      
REMARK 400 THE TRIOSTIN A IS CYCLIC DEPSIPEPTIDE, A MEMBER OF ANTICANCER CLASS. 
REMARK 400                                                                      
REMARK 400  GROUP: 1                                                            
REMARK 400   NAME: TRIOSTIN A                                                   
REMARK 400   CHAIN: A                                                           
REMARK 400   COMPONENT_1: PEPTIDE LIKE POLYMER                                  
REMARK 400   COMPONENT_2: RESIDUE QUI, 2 COPIES                                 
REMARK 400   DESCRIPTION: TRIOSTIN IS A BICYCLIC OCTADEPSIPEPTIDE.              
REMARK 400                BICYCLIZATION IS ACHIEVED BY LINKING THE N- AND THE   
REMARK 400                C- TERMINI, AND A DISULPHIDE BOND BETWEEN RESIDUES 3  
REMARK 400                AND 7. THE TWO QUINOXALINE CHROMOPHORES ARE LINKED    
REMARK 400                TO THE D-SERINE RESIDUES, RESIDUES 1 AND 5.           
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
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   RES CSSEQI ATM2   DEVIATION                     
REMARK 500  1  DT C  15   C5     DT C  15   C7      0.039                       
REMARK 500  1  DT D  21   C5     DT D  21   C7      0.043                       
REMARK 500  2  DT C  15   C5     DT C  15   C7      0.042                       
REMARK 500  3  DT C  15   C5     DT C  15   C7      0.038                       
REMARK 500  4  DT C  15   C5     DT C  15   C7      0.036                       
REMARK 500  4  DT D  21   C5     DT D  21   C7      0.036                       
REMARK 500  5  DT C  15   C5     DT C  15   C7      0.040                       
REMARK 500  5  DT D  21   C5     DT D  21   C7      0.037                       
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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  1  DG C  11   O4' -  C1' -  N9  ANGL. DEV. =   1.9 DEGREES          
REMARK 500  1  DG C  11   N7  -  C8  -  N9  ANGL. DEV. =   3.3 DEGREES          
REMARK 500  1  DC C  13   C1' -  O4' -  C4' ANGL. DEV. =  -6.2 DEGREES          
REMARK 500  1  DC C  13   N1  -  C2  -  O2  ANGL. DEV. =   3.8 DEGREES          
REMARK 500  1  DG C  14   O4' -  C1' -  C2' ANGL. DEV. =  -5.5 DEGREES          
REMARK 500  1  DG C  14   N7  -  C8  -  N9  ANGL. DEV. =   3.2 DEGREES          
REMARK 500  1  DG D  17   C1' -  O4' -  C4' ANGL. DEV. =  -6.5 DEGREES          
REMARK 500  1  DG D  17   N7  -  C8  -  N9  ANGL. DEV. =   3.3 DEGREES          
REMARK 500  1  DC D  19   C1' -  O4' -  C4' ANGL. DEV. =  -6.8 DEGREES          
REMARK 500  1  DC D  19   O4' -  C1' -  N1  ANGL. DEV. =   2.7 DEGREES          
REMARK 500  1  DC D  19   N1  -  C2  -  O2  ANGL. DEV. =   3.7 DEGREES          
REMARK 500  1  DG D  20   N7  -  C8  -  N9  ANGL. DEV. =   3.1 DEGREES          
REMARK 500  1  DT D  21   O4' -  C1' -  C2' ANGL. DEV. =  -4.9 DEGREES          
REMARK 500  1  DC D  22   O4' -  C1' -  N1  ANGL. DEV. =   2.8 DEGREES          
REMARK 500  2  DG C  11   O4' -  C1' -  C2' ANGL. DEV. =  -5.3 DEGREES          
REMARK 500  2  DG C  11   O4' -  C1' -  N9  ANGL. DEV. =   4.5 DEGREES          
REMARK 500  2  DG C  11   N7  -  C8  -  N9  ANGL. DEV. =   3.1 DEGREES          
REMARK 500  2  DC C  13   O4' -  C1' -  N1  ANGL. DEV. =   1.8 DEGREES          
REMARK 500  2  DG C  14   O4' -  C1' -  C2' ANGL. DEV. =  -5.9 DEGREES          
REMARK 500  2  DG C  14   O4' -  C1' -  N9  ANGL. DEV. =   3.9 DEGREES          
REMARK 500  2  DG C  14   N7  -  C8  -  N9  ANGL. DEV. =   3.3 DEGREES          
REMARK 500  2  DC C  16   O4' -  C1' -  N1  ANGL. DEV. =   3.4 DEGREES          
REMARK 500  2  DG D  17   N7  -  C8  -  N9  ANGL. DEV. =   3.5 DEGREES          
REMARK 500  2  DG D  20   C1' -  O4' -  C4' ANGL. DEV. =  -6.2 DEGREES          
REMARK 500  2  DG D  20   O4' -  C1' -  C2' ANGL. DEV. =  -6.8 DEGREES          
REMARK 500  2  DG D  20   O4' -  C1' -  N9  ANGL. DEV. =   4.4 DEGREES          
REMARK 500  2  DG D  20   N7  -  C8  -  N9  ANGL. DEV. =   3.3 DEGREES          
REMARK 500  3  DG C  11   O4' -  C1' -  N9  ANGL. DEV. =   2.0 DEGREES          
REMARK 500  3  DG C  11   N7  -  C8  -  N9  ANGL. DEV. =   3.4 DEGREES          
REMARK 500  3  DA C  12   O4' -  C1' -  N9  ANGL. DEV. =   2.5 DEGREES          
REMARK 500  3  DC C  13   O4' -  C1' -  N1  ANGL. DEV. =   3.5 DEGREES          
REMARK 500  3  DG C  14   O4' -  C1' -  N9  ANGL. DEV. =   2.2 DEGREES          
REMARK 500  3  DG C  14   N7  -  C8  -  N9  ANGL. DEV. =   3.2 DEGREES          
REMARK 500  3  DT C  15   O4' -  C1' -  C2' ANGL. DEV. =  -6.8 DEGREES          
REMARK 500  3  DC C  16   O4' -  C1' -  N1  ANGL. DEV. =   3.1 DEGREES          
REMARK 500  3  DG D  17   N7  -  C8  -  N9  ANGL. DEV. =   3.4 DEGREES          
REMARK 500  3  DG D  17   C3' -  O3' -  P   ANGL. DEV. =   9.2 DEGREES          
REMARK 500  3  DA D  18   O4' -  C1' -  C2' ANGL. DEV. =  -4.9 DEGREES          
REMARK 500  3  DC D  19   C4' -  C3' -  C2' ANGL. DEV. =  -4.6 DEGREES          
REMARK 500  3  DC D  19   O4' -  C1' -  N1  ANGL. DEV. =   4.0 DEGREES          
REMARK 500  3  DG D  20   O4' -  C1' -  C2' ANGL. DEV. =  -5.5 DEGREES          
REMARK 500  3  DG D  20   O4' -  C1' -  N9  ANGL. DEV. =   3.6 DEGREES          
REMARK 500  3  DG D  20   N7  -  C8  -  N9  ANGL. DEV. =   3.2 DEGREES          
REMARK 500  3  DC D  22   O4' -  C1' -  N1  ANGL. DEV. =   4.1 DEGREES          
REMARK 500  4  DG C  11   O4' -  C1' -  C2' ANGL. DEV. =  -5.4 DEGREES          
REMARK 500  4  DG C  11   O4' -  C1' -  N9  ANGL. DEV. =   4.4 DEGREES          
REMARK 500  4  DG C  11   N7  -  C8  -  N9  ANGL. DEV. =   3.3 DEGREES          
REMARK 500  4  DC C  13   C4' -  C3' -  C2' ANGL. DEV. =  -5.2 DEGREES          
REMARK 500  4  DC C  13   O4' -  C1' -  N1  ANGL. DEV. =   5.2 DEGREES          
REMARK 500  4  DG C  14   O4' -  C1' -  C2' ANGL. DEV. =  -5.4 DEGREES          
REMARK 500                                                                      
REMARK 500 THIS ENTRY HAS      73 ANGLE DEVIATIONS.                             
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  5 NCY A   3      -61.43    -98.73                                   
REMARK 500  5 NCY A   7      -62.43    -90.57                                   
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 CHAIN A OF TRIOSTIN A             
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 193D   RELATED DB: PDB                                   
REMARK 900 SOLUTION STRUCTURE OF D(ACACGTGT) COMPLEXED WITH QUINOMYCIN UK-6305  
REMARK 900 RELATED ID: 1PFE   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF D(GCGTACG) COMPLEXED WITH ECHINOMYCIN - SPACE   
REMARK 900 GROUP P6322                                                          
REMARK 900 RELATED ID: 1VS2   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF D(GCGTACGC) COMPLEXED WITH TRIOSIN A            
REMARK 900 RELATED ID: 1XVK   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF D(GCGTACGC) COMPLEXED WITH ECHINOMYCIN - SPACE  
REMARK 900 GROUP P632                                                           
REMARK 900 RELATED ID: 1XVN   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF D(ACGTACGT) COMPLEXED WITH ECHINOMYCIN - SPACE  
REMARK 900 GROUP P632                                                           
REMARK 900 RELATED ID: 1XVR   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF D(CGTACG) COMPLEXED WITH ECHINOMYCIN - SPACE    
REMARK 900 GROUP C21                                                            
REMARK 900 RELATED ID: 2ADW   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF D(ACGTACGT) COMPLEXED WITH ECHINOMYCIN - SPACE  
REMARK 900 GROUP P42212                                                         
REMARK 900 RELATED ID: 2DA8   RELATED DB: PDB                                   
REMARK 900 SOLUTION STRUCTURE OF D(GATATC) COMPLEXED WITH A MODIFIED TRIOSTIN   
REMARK 900 A AT POSITIONS 4 AND 8                                               
REMARK 900 RELATED ID: 3GO3   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF D(ACGTACGT) COMPLEXED WITH ECHINOMYCIN - SPACE  
REMARK 900 GROUP P41212                                                         
DBREF  185D A    1     8  NOR    NOR01129 NOR01129         1      8             
DBREF  185D C   11    16  PDB    185D     185D             1      6             
DBREF  185D D   17    22  PDB    185D     185D             1      6             
SEQRES   1 A    8  DSN ALA NCY MVA DSN ALA NCY MVA                              
SEQRES   1 C    6   DG  DA  DC  DG  DT  DC                                      
SEQRES   1 D    6   DG  DA  DC  DG  DT  DC                                      
HET    DSN  A   1      10                                                       
HET    NCY  A   3      13                                                       
HET    MVA  A   4      19                                                       
HET    DSN  A   5      10                                                       
HET    NCY  A   7      13                                                       
HET    MVA  A   8      19                                                       
HET    QUI  A   0      17                                                       
HET    QUI  A   9      17                                                       
HETNAM     DSN D-SERINE                                                         
HETNAM     NCY N-METHYLCYSTEINE                                                 
HETNAM     MVA N-METHYLVALINE                                                   
HETNAM     QUI 2-CARBOXYQUINOXALINE                                             
FORMUL   1  DSN    2(C3 H7 N O3)                                                
FORMUL   1  NCY    2(C4 H9 N O2 S)                                              
FORMUL   1  MVA    2(C6 H13 N O2)                                               
FORMUL   4  QUI    2(C9 H6 N2 O2)                                               
SSBOND   1 NCY A    3    NCY A    7                          1555   1555  2.02  
LINK         C   QUI A   0                 N   DSN A   1     1555   1555  1.33  
LINK         C   DSN A   1                 N   ALA A   2     1555   1555  1.31  
LINK         OG  DSN A   1                 C   MVA A   8     1555   1555  1.33  
LINK         C   ALA A   2                 N   NCY A   3     1555   1555  1.32  
LINK         C   NCY A   3                 N   MVA A   4     1555   1555  1.33  
LINK         C   MVA A   4                 OG  DSN A   5     1555   1555  1.33  
LINK         C   DSN A   5                 N   ALA A   6     1555   1555  1.30  
LINK         N   DSN A   5                 C   QUI A   9     1555   1555  1.33  
LINK         C   ALA A   6                 N   NCY A   7     1555   1555  1.33  
LINK         C   NCY A   7                 N   MVA A   8     1555   1555  1.33  
SITE     1 AC1  8  DA C  12   DC C  13   DG C  14   DT C  15                    
SITE     2 AC1  8  DA D  18   DC D  19   DG D  20   DT D  21                    
CRYST1    1.000    1.000    1.000  90.00  90.00  90.00 P 1           1          
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      1.000000  0.000000  0.000000        0.00000                         
SCALE2      0.000000  1.000000  0.000000        0.00000                         
SCALE3      0.000000  0.000000  1.000000        0.00000                         
MODEL        1                                                                  
HETATM    1  N   DSN A   1       4.031   3.107   1.694  1.00  0.00           N  
HETATM    2  CA  DSN A   1       3.757   4.038   2.866  1.00  0.00           C  
HETATM    3  C   DSN A   1       2.281   4.307   3.242  1.00  0.00           C  
HETATM    4  O   DSN A   1       1.999   4.689   4.360  1.00  0.00           O  
HETATM    5  CB  DSN A   1       4.505   3.463   4.122  1.00  0.00           C  
HETATM    6  OG  DSN A   1       4.068   2.123   4.268  1.00  0.00           O  
HETATM    7  H   DSN A   1       3.811   2.150   1.753  1.00  0.00           H  
HETATM    8  HA  DSN A   1       4.179   5.007   2.652  1.00  0.00           H  
HETATM    9  HB2 DSN A   1       5.580   3.487   3.990  1.00  0.00           H  
HETATM   10  HB3 DSN A   1       4.248   4.014   5.018  1.00  0.00           H