PDB Short entry for 1RB6
HEADER    DNA BINDING PROTEIN                     01-NOV-03   1RB6              
TITLE     ANTIPARALLEL TRIMER OF GCN4-LEUCINE ZIPPER CORE MUTANT AS N16A        
TITLE    2 TETRAGONAL FORM                                                      
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: GENERAL CONTROL PROTEIN GCN4;                              
COMPND   3 CHAIN: A, B, C;                                                      
COMPND   4 FRAGMENT: LEUCINE-ZIPPER (RESIDUES 249-281);                         
COMPND   5 SYNONYM: AMINO ACID BIOSYNTHESIS REGULATORY PROTEIN;                 
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 OTHER_DETAILS: THE SEQUENCE OF THE PROTEIN IS NATURALLY FOUND IN     
SOURCE   4 SACCHAROMYCES CEREVISIAE. THE PROTEIN WAS CHEMICALLY SYNTHESIZED.    
KEYWDS    COILED COIL, LEUCINE ZIPPER, DNA BINDING PROTEIN                      
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.HOLTON,T.ALBER                                                      
REVDAT   4   11-OCT-17 1RB6    1       REMARK                                   
REVDAT   3   24-FEB-09 1RB6    1       VERSN                                    
REVDAT   2   17-FEB-04 1RB6    1       JRNL                                     
REVDAT   1   13-JAN-04 1RB6    0                                                
JRNL        AUTH   J.HOLTON,T.ALBER                                             
JRNL        TITL   AUTOMATED PROTEIN CRYSTAL STRUCTURE DETERMINATION USING      
JRNL        TITL 2 ELVES.                                                       
JRNL        REF    PROC.NATL.ACAD.SCI.USA        V. 101  1537 2004              
JRNL        REFN                   ISSN 0027-8424                               
JRNL        PMID   14752198                                                     
JRNL        DOI    10.1073/PNAS.0306241101                                      
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   L.GONZALEZ JR.,J.J.PLECS,T.ALBER                             
REMARK   1  TITL   AN ENGINEERED ALLOSTERIC SWITCH IN LEUCINE-ZIPPER            
REMARK   1  TITL 2 OLIGOMERIZATION                                              
REMARK   1  REF    NAT.STRUCT.BIOL.              V.   3   510 1996              
REMARK   1  REFN                   ISSN 1072-8368                               
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   P.B.HARBURY,P.S.KIM,T.ALBER                                  
REMARK   1  TITL   CRYSTAL STRUCTURE OF AN ISOLEUCINE-ZIPPER TRIMER             
REMARK   1  REF    NATURE                        V. 371    80 1994              
REMARK   1  REFN                   ISSN 0028-0836                               
REMARK   1  DOI    10.1038/371080A0                                             
REMARK   1 REFERENCE 3                                                          
REMARK   1  AUTH   P.B.HARBURY,T.ZHANG,P.S.KIM,T.ALBER                          
REMARK   1  TITL   A SWITCH BETWEEN TWO-, THREE-, AND FOUR-STRANDED COILED      
REMARK   1  TITL 2 COILS IN GCN4 LEUCINE ZIPPER MUTANTS                         
REMARK   1  REF    SCIENCE                       V. 262  1401 1993              
REMARK   1  REFN                   ISSN 0036-8075                               
REMARK   1 REFERENCE 4                                                          
REMARK   1  AUTH   E.K.O'SHEA,J.D.KLEMM,P.S.KIM,T.ALBER                         
REMARK   1  TITL   X-RAY STRUCTURE OF THE GCN4 LEUCINE ZIPPER, A TWO-STRANDED,  
REMARK   1  TITL 2 PARALLEL COILED COIL.                                        
REMARK   1  REF    SCIENCE                       V. 254   539 1991              
REMARK   1  REFN                   ISSN 0036-8075                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.90 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 26/11/99                                      
REMARK   3   AUTHORS     : MURSHUDOV,VAGIN,DODSON                               
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 15.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : NULL                           
REMARK   3   NUMBER OF REFLECTIONS             : 13674                          
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 + TEST SET) : 0.223                           
REMARK   3   R VALUE            (WORKING SET) : 0.223                           
REMARK   3   FREE R VALUE                     : 0.241                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.200                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 809                             
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 800                                     
REMARK   3   NUCLEIC ACID ATOMS       : 0                                       
REMARK   3   HETEROGEN ATOMS          : 10                                      
REMARK   3   SOLVENT ATOMS            : 146                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): NULL          
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   DISTANCE RESTRAINTS.                    RMS    SIGMA               
REMARK   3    BOND LENGTH                     (A) : NULL  ; NULL                
REMARK   3    ANGLE DISTANCE                  (A) : NULL  ; NULL                
REMARK   3    INTRAPLANAR 1-4 DISTANCE        (A) : NULL  ; NULL                
REMARK   3    H-BOND OR METAL COORDINATION    (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   PLANE RESTRAINT                  (A) : NULL  ; NULL                
REMARK   3   CHIRAL-CENTER RESTRAINT       (A**3) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   NON-BONDED CONTACT RESTRAINTS.                                     
REMARK   3    SINGLE TORSION                  (A) : NULL  ; NULL                
REMARK   3    MULTIPLE TORSION                (A) : NULL  ; NULL                
REMARK   3    H-BOND (X...Y)                  (A) : NULL  ; NULL                
REMARK   3    H-BOND (X-H...Y)                (A) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3   CONFORMATIONAL TORSION ANGLE RESTRAINTS.                           
REMARK   3    SPECIFIED                 (DEGREES) : NULL  ; NULL                
REMARK   3    PLANAR                    (DEGREES) : NULL  ; NULL                
REMARK   3    STAGGERED                 (DEGREES) : NULL  ; NULL                
REMARK   3    TRANSVERSE                (DEGREES) : NULL  ; NULL                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1RB6 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 10-NOV-03.                  
REMARK 100 THE DEPOSITION ID IS D_1000020634.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 11-JUN-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 90.0                               
REMARK 200  PH                             : 7.3                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : SSRL                               
REMARK 200  BEAMLINE                       : BL1-5                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0688, 0.9800, 0.9797, 0.9795,    
REMARK 200                                   0.9322                             
REMARK 200  MONOCHROMATOR                  : SI(111)                            
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 4                     
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : MOSFLM                             
REMARK 200  DATA SCALING SOFTWARE          : SCALA, CCP4 (SCALA)                
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 19898                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 45.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 99.6                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.90                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 97.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : NULL                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: MAD                                            
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD                          
REMARK 200 SOFTWARE USED: CCP4                                                  
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 75.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.44                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 25 MM PHOSPHATE 400 MM NACL 15%          
REMARK 280  PEG8000, PH 7.3, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2                        
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y+1/2,X+1/2,Z+3/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+1/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+3/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+1/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -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 -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       39.00600            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       32.47350            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       32.47350            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       58.50900            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       32.47350            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       32.47350            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       19.50300            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       32.47350            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       32.47350            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       58.50900            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       32.47350            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       32.47350            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       19.50300            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       39.00600            
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: TRIMERIC                          
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC                   
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 5850 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 6460 ANGSTROM**2                        
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -120.0 KCAL/MOL                       
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C                               
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 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     GLU C    32                                                      
REMARK 465     ARG C    33                                                      
REMARK 470                                                                      
REMARK 470 MISSING ATOM                                                         
REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER;           
REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;          
REMARK 470 I=INSERTION CODE):                                                   
REMARK 470   M RES CSSEQI  ATOMS                                                
REMARK 470     ARG A  33    C    O    CB   CG   CD   NE   CZ                    
REMARK 470     ARG A  33    NH1  NH2                                            
REMARK 470     GLU B  32    CG   CD   OE1  OE2                                  
REMARK 470     ARG B  33    CA   C    O                                         
REMARK 470     GLY C  31    O                                                   
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   OE1  GLN A     4     O    HOH A   948              0.82            
REMARK 500   CD   GLN A     4     O    HOH A   948              1.42            
REMARK 500   CD   LYS C     8     O    HOH C   937              1.58            
REMARK 500   OE2  GLU B    20    CL     CL B   804              1.79            
REMARK 500   NE2  GLN A     4     O    HOH A   948              1.90            
REMARK 500   NZ   LYS C     8     O    HOH C   937              1.91            
REMARK 500   CE   LYS C     8     O    HOH C   937              1.93            
REMARK 500   NZ   LYS C    28     O    HOH C   924              1.93            
REMARK 500   NZ   LYS C    28     O    HOH C   936              1.96            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   OE2  GLU A    32    CL     CL A   808     8655     0.62            
REMARK 500   CD   GLU A    32    CL     CL A   808     8655     1.50            
REMARK 500   O    GLU B    32     NH2  ARG C    25     8655     2.18            
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    ACE A   0   O   -  C   -  N   ANGL. DEV. =  22.6 DEGREES          
REMARK 500    ARG A   1   C   -  N   -  CA  ANGL. DEV. =  15.9 DEGREES          
REMARK 500    ARG A  25   CD  -  NE  -  CZ  ANGL. DEV. =   8.6 DEGREES          
REMARK 500    ACE B   0   O   -  C   -  N   ANGL. DEV. =  18.3 DEGREES          
REMARK 500    ARG B   1   NE  -  CZ  -  NH2 ANGL. DEV. =  -4.6 DEGREES          
REMARK 500    ARG B  25   CD  -  NE  -  CZ  ANGL. DEV. =   8.6 DEGREES          
REMARK 500    ARG B  33   NE  -  CZ  -  NH2 ANGL. DEV. =   4.7 DEGREES          
REMARK 500    ARG C   1   NE  -  CZ  -  NH2 ANGL. DEV. =   3.5 DEGREES          
REMARK 500    GLU C  22   CG  -  CD  -  OE1 ANGL. DEV. = -13.6 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY                                       
REMARK 500                                                                      
REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY                       
REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER                 
REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME;                     
REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER;                            
REMARK 500 I=INSERTION CODE).                                                   
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        ANGLE                                           
REMARK 500    VAL C  30         18.38                                           
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                               K C 801   K                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU C  22   OE1                                                    
REMARK 620 2 HOH B 922   O   133.1                                              
REMARK 620 N                    1                                               
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K C 801                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K B 802                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 803                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 804                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 805                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 806                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 808                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 809                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC9                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 810                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: BC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL B 811                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1RB1   RELATED DB: PDB                                   
REMARK 900 ANTIPARALLEL TRIMER OF GCN4-LEUCINE ZIPPER CORE MUTANT AS N16A       
REMARK 900 TRIGONAL AUTOMATIC SOLUTION                                          
REMARK 900 RELATED ID: 1RB4   RELATED DB: PDB                                   
REMARK 900 ANTIPARALLEL TRIMER OF GCN4-LEUCINE ZIPPER CORE MUTANT AS N16A       
REMARK 900 TETRAGONAL AUTOMATIC SOLUTION                                        
REMARK 900 RELATED ID: 1RB5   RELATED DB: PDB                                   
REMARK 900 ANTIPARALLEL TRIMER OF GCN4-LEUCINE ZIPPER CORE MUTANT AS N16A       
REMARK 900 TETRAGONAL FORM                                                      
DBREF  1RB6 A    1    33  UNP    P03069   GCN4_YEAST     249    281             
DBREF  1RB6 B    1    33  UNP    P03069   GCN4_YEAST     249    281             
DBREF  1RB6 C    1    33  UNP    P03069   GCN4_YEAST     249    281             
SEQADV 1RB6 ALA A   16  UNP  P03069    ASN   264 ENGINEERED                     
SEQADV 1RB6 ALA B   16  UNP  P03069    ASN   264 ENGINEERED                     
SEQADV 1RB6 ALA C   16  UNP  P03069    ASN   264 ENGINEERED                     
SEQRES   1 A   34  ACE ARG MET LYS GLN LEU GLU ASP LYS VAL GLU GLU LEU          
SEQRES   2 A   34  LEU SER LYS ALA TYR HIS LEU GLU ASN GLU VAL ALA ARG          
SEQRES   3 A   34  LEU LYS LYS LEU VAL GLY GLU ARG                              
SEQRES   1 B   34  ACE ARG MET LYS GLN LEU GLU ASP LYS VAL GLU GLU LEU          
SEQRES   2 B   34  LEU SER LYS ALA TYR HIS LEU GLU ASN GLU VAL ALA ARG          
SEQRES   3 B   34  LEU LYS LYS LEU VAL GLY GLU ARG                              
SEQRES   1 C   34  ACE ARG MET LYS GLN LEU GLU ASP LYS VAL GLU GLU LEU          
SEQRES   2 C   34  LEU SER LYS ALA TYR HIS LEU GLU ASN GLU VAL ALA ARG          
SEQRES   3 C   34  LEU LYS LYS LEU VAL GLY GLU ARG                              
HET    ACE  A   0       3                                                       
HET    ACE  B   0       3                                                       
HET    ACE  C   0       3                                                       
HET     CL  A 806       1                                                       
HET     CL  A 808       1                                                       
HET     CL  A 810       1                                                       
HET      K  B 802       1                                                       
HET     CL  B 803       2                                                       
HET     CL  B 804       1                                                       
HET     CL  B 805       1                                                       
HET     CL  B 809       1                                                       
HET     CL  B 811       1                                                       
HET      K  C 801       1                                                       
HETNAM     ACE ACETYL GROUP                                                     
HETNAM      CL CHLORIDE ION                                                     
HETNAM       K POTASSIUM ION                                                    
FORMUL   1  ACE    3(C2 H4 O)                                                   
FORMUL   4   CL    8(CL 1-)                                                     
FORMUL   7    K    2(K 1+)                                                      
FORMUL  14  HOH   *146(H2 O)                                                    
HELIX    1   1 ARG A    1  GLY A   31  1                                  31    
HELIX    2   2 ARG B    1  GLU B   32  1                                  32    
HELIX    3   3 ARG C    1  VAL C   30  1                                  30    
LINK         C   ACE A   0                 N   ARG A   1     1555   1555  1.29  
LINK         C   ACE B   0                 N   ARG B   1     1555   1555  1.34  
LINK         C   ACE C   0                 N   ARG C   1     1555   1555  1.33  
LINK         OE1AGLU C  22                 K     K C 801     1555   1555  2.50  
LINK         K     K C 801                 O   HOH B 922     1555   1555  2.81  
SITE     1 AC1  2 HOH B 922  GLU C  22                                          
SITE     1 AC2  5 LYS A   8  GLU B  10  ASN C  21  GLU C  22                    
SITE     2 AC2  5 ARG C  25                                                     
SITE     1 AC3  4 LYS B  15  GLU C  11  LYS C  15  HOH C 904                    
SITE     1 AC4  3 LYS A  15  GLU B  20  HOH B 934                               
SITE     1 AC5  4 LYS B   8  LYS C  15  HOH C 908  HOH C 925                    
SITE     1 AC6  2 ARG A  25  LYS B  27                                          
SITE     1 AC7  2 GLU A  32  ARG A  33                                          
SITE     1 AC8  4 HIS B  18  ASN B  21  ARG B  25  HOH B 907                    
SITE     1 AC9  2 GLU A  10  ASN B  21                                          
SITE     1 BC1  2 HOH B 917  HOH C 904                                          
CRYST1   64.947   64.947   78.012  90.00  90.00  90.00 P 43 21 2    24          
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      0.015397  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.015397  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012819        0.00000                         
HETATM    1  C   ACE A   0     -16.857  33.740  11.917  1.00 31.37           C  
HETATM    2  O   ACE A   0     -16.668  32.605  12.324  1.00 33.50           O  
HETATM    3  CH3 ACE A   0     -18.243  34.292  11.690  1.00 32.98           C