HEADER    RNA                                     06-AUG-00   1FIR              
TITLE     CRYSTAL STRUCTURE OF HIV-1 REVERSE TRANSCRIPTION PRIMER TRNA(LYS3)    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: HIV-1 REVERSE TRANSCRIPTION PRIMER TRNA(LYS3);             
COMPND   3 CHAIN: A                                                             
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: BOS TAURUS;                                     
SOURCE   3 ORGANISM_COMMON: CATTLE;                                             
SOURCE   4 ORGANISM_TAXID: 9913;                                                
SOURCE   5 OTHER_DETAILS: THIS SEQUENCE OCCURS NATURALLY IN HUMANS, BOVINES AND 
SOURCE   6 CHICKENS                                                             
KEYWDS    MAMMALIAN TRANSFERT RIBONUCLEIC ACID, HIV-1 PRIMER TRNA, AMINO ACID   
KEYWDS   2 TRANSPORT, CANONICAL TRNA STRUCTURE, CANONICAL ANTICODON,            
KEYWDS   3 FRAMESHIFTING, CODON/ANTICODON MIMICRY, MODIFIED BASES, RNA          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    P.BENAS,P.DUMAS                                                       
REVDAT   7   02-AUG-23 1FIR    1       REMARK LINK                              
REVDAT   6   11-APR-18 1FIR    1       REMARK                                   
REVDAT   5   04-APR-18 1FIR    1       REMARK                                   
REVDAT   4   09-APR-14 1FIR    1       LINK   REMARK                            
REVDAT   3   13-JUL-11 1FIR    1       VERSN                                    
REVDAT   2   24-FEB-09 1FIR    1       VERSN                                    
REVDAT   1   17-JAN-01 1FIR    0                                                
JRNL        AUTH   P.BENAS,G.BEC,G.KEITH,R.MARQUET,C.EHRESMANN,B.EHRESMANN,     
JRNL        AUTH 2 P.DUMAS                                                      
JRNL        TITL   THE CRYSTAL STRUCTURE OF HIV REVERSE-TRANSCRIPTION PRIMER    
JRNL        TITL 2 TRNA(LYS,3) SHOWS A CANONICAL ANTICODON LOOP.                
JRNL        REF    RNA                           V.   6  1347 2000              
JRNL        REFN                   ISSN 1355-8382                               
JRNL        PMID   11073212                                                     
JRNL        DOI    10.1017/S1355838200000911                                    
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   P.BENAS,P.DUMAS                                              
REMARK   1  TITL   MOLECULAR BLOCS IN TRNAS THAT COULD PREVENT +1 FRAMESHIFTING 
REMARK   1  REF    TO BE PUBLISHED                            2000              
REMARK   1  REFN                                                                
REMARK   1 REFERENCE 2                                                          
REMARK   1  AUTH   P.BENAS                                                      
REMARK   1  TITL   STUDIES ON THE TERNARY INITIATION COMPLEX OF HIV-1 REVERSE   
REMARK   1  TITL 2 TRANSCRIPTION AND CRYSTALLOGRAPHIC STRUCTURES OF TWO         
REMARK   1  TITL 3 PARTNERS                                                     
REMARK   1  REF    THESIS                                   1 2000              
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.30 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 0.4                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : MODIFIED CNS LIBRARIES (PARKINSON ET AL.)       
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.30                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 40.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 3.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 836049.770                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 80.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 5890                           
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.181                           
REMARK   3   FREE R VALUE                     : 0.227                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.200                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 543                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.010                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 3.30                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.51                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 58.10                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 666                          
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2210                       
REMARK   3   BIN FREE R VALUE                    : 0.2340                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 4.90                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 34                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.040                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 0                                       
REMARK   3   NUCLEIC ACID ATOMS       : 1645                                    
REMARK   3   HETEROGEN ATOMS          : 2                                       
REMARK   3   SOLVENT ATOMS            : 16                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 33.20                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 4.53000                                              
REMARK   3    B22 (A**2) : 4.53000                                              
REMARK   3    B33 (A**2) : -9.07000                                             
REMARK   3    B12 (A**2) : 7.03000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.31                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.21                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 5.00                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.41                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.21                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.009                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.500                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 19.20                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 2.060                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN BOND              (A**2) : NULL  ; NULL                 
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.03                                                 
REMARK   3   BSOL        : 34.19                                                
REMARK   3                                                                      
REMARK   3  NCS MODEL : NULL                                                    
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS.                         RMS   SIGMA/WEIGHT          
REMARK   3   GROUP  1  POSITIONAL            (A) : NULL  ; NULL                 
REMARK   3   GROUP  1  B-FACTOR           (A**2) : NULL  ; NULL                 
REMARK   3                                                                      
REMARK   3  PARAMETER FILE  1  : DNA-RNA-REP-RESIPARAM.BP                       
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : DNA-RNA-RESITOP.BP                             
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS:                                           
REMARK   3  R AND FREE R IMPROVED BY 12% AND 11% RESPECTIVELY BY A PROPER       
REMARK   3  MASK DEFINITION (SEE PRIMARY REF.)                                  
REMARK   4                                                                      
REMARK   4 1FIR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY NDB.                                
REMARK 100 THE DEPOSITION ID IS D_1000011622.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 02-FEB-98                          
REMARK 200  TEMPERATURE           (KELVIN) : 110                                
REMARK 200  PH                             : 5.6                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ESRF                               
REMARK 200  BEAMLINE                       : BM02                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.9805                             
REMARK 200  MONOCHROMATOR                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARRESEARCH                        
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 6482                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 3.300                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 40.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 88.2                               
REMARK 200  DATA REDUNDANCY                : 3.200                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.08100                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 10.5000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.30                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.42                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 71.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.20                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.16500                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 4.300                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: 4TNA                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 78.73                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 5.12                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 50 MM MES-KOH PH 5.6, 1.6 TO 1.8 M       
REMARK 280  LI2SO4, 10 MM MGCL2, PH 5.6, VAPOR DIFFUSION, HANGING DROP,         
REMARK 280  TEMPERATURE 293K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 32 1 2                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+2/3                                            
REMARK 290       3555   -X+Y,-X,Z+1/3                                           
REMARK 290       4555   -Y,-X,-Z+1/3                                            
REMARK 290       5555   -X+Y,Y,-Z+2/3                                           
REMARK 290       6555   X,X-Y,-Z                                                
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       55.07333            
REMARK 290   SMTRY1   3 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   3 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000       27.53667            
REMARK 290   SMTRY1   4  0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   4 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000       27.53667            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000       55.07333            
REMARK 290   SMTRY1   6  0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000        0.00000            
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: MONOMERIC                         
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A                                     
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 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   O4'    U A     8     O2'  5MC A    48              2.17            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
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      G A   1   P       G A   1   OP3    -0.081                       
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      A A   9   N9  -  C1' -  C2' ANGL. DEV. =   8.1 DEGREES          
REMARK 500      C A  17   N1  -  C1' -  C2' ANGL. DEV. =   9.6 DEGREES          
REMARK 500      G A  19   O4' -  C1' -  N9  ANGL. DEV. =   5.0 DEGREES          
REMARK 500      U A  60   C2' -  C3' -  O3' ANGL. DEV. =  17.7 DEGREES          
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      G A   5         0.05    SIDE CHAIN                              
REMARK 500      G A  42         0.05    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 NA A 202                  
DBREF  1FIR A    1    76  PDB    1FIR     1FIR             1     76             
SEQRES   1 A   76    G   C   C   C   G 2MG   A   U   A 2MG   C   U   C          
SEQRES   2 A   76    A   G H2U   C   G   G H2U   A   G   A   G   C   A          
SEQRES   3 A   76  PSU   C   A   G   A   C   U 70U   U   U 12A   A PSU          
SEQRES   4 A   76    C   U   G   A   G   G 7MG H2U 5MC 5MC   A   G   G          
SEQRES   5 A   76    G 2MU PSU   C   A 1MA   G   U   C   C   C   U   G          
SEQRES   6 A   76    U   U   C   G   G   G   C   G   C   C   A                  
MODRES 1FIR 2MG A    6    G  2N-METHYLGUANOSINE-5'-MONOPHOSPHATE                
MODRES 1FIR 2MG A   10    G  2N-METHYLGUANOSINE-5'-MONOPHOSPHATE                
MODRES 1FIR H2U A   16    U  5,6-DIHYDROURIDINE-5'-MONOPHOSPHATE                
MODRES 1FIR H2U A   20    U  5,6-DIHYDROURIDINE-5'-MONOPHOSPHATE                
MODRES 1FIR PSU A   27    U  PSEUDOURIDINE-5'-MONOPHOSPHATE                     
MODRES 1FIR 70U A   34    U                                                     
MODRES 1FIR 12A A   37    A                                                     
MODRES 1FIR PSU A   39    U  PSEUDOURIDINE-5'-MONOPHOSPHATE                     
MODRES 1FIR 7MG A   46    G                                                     
MODRES 1FIR H2U A   47    U  5,6-DIHYDROURIDINE-5'-MONOPHOSPHATE                
MODRES 1FIR 5MC A   48    C  5-METHYLCYTIDINE-5'-MONOPHOSPHATE                  
MODRES 1FIR 5MC A   49    C  5-METHYLCYTIDINE-5'-MONOPHOSPHATE                  
MODRES 1FIR 2MU A   54    U  2',5-DIMETHYLURIDINE-5'-MONOPHOSPHATE              
MODRES 1FIR PSU A   55    U  PSEUDOURIDINE-5'-MONOPHOSPHATE                     
MODRES 1FIR 1MA A   58    A                                                     
HET    2MG  A   6      24                                                       
HET    2MG  A  10      24                                                       
HET    H2U  A  16      20                                                       
HET    H2U  A  20      40                                                       
HET    PSU  A  27      20                                                       
HET    70U  A  34      25                                                       
HET    12A  A  37      34                                                       
HET    PSU  A  39      20                                                       
HET    7MG  A  46      24                                                       
HET    H2U  A  47      20                                                       
HET    5MC  A  48      21                                                       
HET    5MC  A  49      21                                                       
HET    2MU  A  54      22                                                       
HET    PSU  A  55      20                                                       
HET    1MA  A  58      23                                                       
HET     MG  A 201       1                                                       
HET     NA  A 202       1                                                       
HETNAM     2MG 2N-METHYLGUANOSINE-5'-MONOPHOSPHATE                              
HETNAM     H2U 5,6-DIHYDROURIDINE-5'-MONOPHOSPHATE                              
HETNAM     PSU PSEUDOURIDINE-5'-MONOPHOSPHATE                                   
HETNAM     70U 5-(O-METHYLACETO)-2-THIO-2-DEOXY-URIDINE-5'-                     
HETNAM   2 70U  MONOPHOSPHATE                                                   
HETNAM     12A 2-METHYLTHIO-N6-(AMINOCARBONYL-L-THREONYL)-ADENOSINE-            
HETNAM   2 12A  5'-MONOPHOSPHATE                                                
HETNAM     7MG 7N-METHYL-8-HYDROGUANOSINE-5'-MONOPHOSPHATE                      
HETNAM     5MC 5-METHYLCYTIDINE-5'-MONOPHOSPHATE                                
HETNAM     2MU 2',5-DIMETHYLURIDINE-5'-MONOPHOSPHATE                            
HETNAM     1MA 6-HYDRO-1-METHYLADENOSINE-5'-MONOPHOSPHATE                       
HETNAM      MG MAGNESIUM ION                                                    
HETNAM      NA SODIUM ION                                                       
FORMUL   1  2MG    2(C11 H16 N5 O8 P)                                           
FORMUL   1  H2U    3(C9 H15 N2 O9 P)                                            
FORMUL   1  PSU    3(C9 H13 N2 O9 P)                                            
FORMUL   1  70U    C12 H17 N2 O10 P S                                           
FORMUL   1  12A    C16 H23 N6 O11 P S                                           
FORMUL   1  7MG    C11 H18 N5 O8 P                                              
FORMUL   1  5MC    2(C10 H16 N3 O8 P)                                           
FORMUL   1  2MU    C11 H17 N2 O9 P                                              
FORMUL   1  1MA    C11 H16 N5 O7 P                                              
FORMUL   2   MG    MG 2+                                                        
FORMUL   3   NA    NA 1+                                                        
FORMUL   4  HOH   *16(H2 O)                                                     
LINK         O3'   G A   5                 P   2MG A   6     1555   1555  1.62  
LINK         O3' 2MG A   6                 P     A A   7     1555   1555  1.60  
LINK         O3'   A A   9                 P   2MG A  10     1555   1555  1.59  
LINK         O3' 2MG A  10                 P     C A  11     1555   1555  1.60  
LINK         O3'   G A  15                 P   H2U A  16     1555   1555  1.60  
LINK         O3' H2U A  16                 P     C A  17     1555   1555  1.61  
LINK         O3'A  G A  19                 P  AH2U A  20     1555   1555  1.59  
LINK         O3'B  G A  19                 P  BH2U A  20     1555   1555  1.59  
LINK         O3'AH2U A  20                 P     A A  21     1555   1555  1.61  
LINK         O3'BH2U A  20                 P     A A  21     1555   1555  1.62  
LINK         O3'   A A  26                 P   PSU A  27     1555   1555  1.60  
LINK         O3' PSU A  27                 P     C A  28     1555   1555  1.61  
LINK         O3'   U A  33                 P   70U A  34     1555   1555  1.60  
LINK         O3' 70U A  34                 P     U A  35     1555   1555  1.60  
LINK         O3'   U A  36                 P   12A A  37     1555   1555  1.60  
LINK         O3' 12A A  37                 P     A A  38     1555   1555  1.60  
LINK         O3'   A A  38                 P   PSU A  39     1555   1555  1.60  
LINK         O3' PSU A  39                 P     C A  40     1555   1555  1.61  
LINK         O3'   G A  45                 P   7MG A  46     1555   1555  1.60  
LINK         O3' 7MG A  46                 P   H2U A  47     1555   1555  1.59  
LINK         O3' H2U A  47                 P   5MC A  48     1555   1555  1.59  
LINK         O3' 5MC A  48                 P   5MC A  49     1555   1555  1.60  
LINK         O3' 5MC A  49                 P     A A  50     1555   1555  1.58  
LINK         O3'   G A  53                 P   2MU A  54     1555   1555  1.60  
LINK         O3' 2MU A  54                 P   PSU A  55     1555   1555  1.59  
LINK         O3' PSU A  55                 P     C A  56     1555   1555  1.60  
LINK         O3'   A A  57                 P   1MA A  58     1555   1555  1.61  
LINK         O3' 1MA A  58                 P     G A  59     1555   1555  1.59  
SITE     1 AC1  1   G A  42                                                     
CRYST1  100.720  100.720   82.610  90.00  90.00 120.00 P 32 1 2      6          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.009929  0.005732  0.000000        0.00000                         
SCALE2      0.000000  0.011464  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012105        0.00000