PDB Short entry for 2ZY6
HEADER    RNA                                     14-JAN-09   2ZY6              
TITLE     CRYSTAL STRUCTURE OF A TRUNCATED TRNA, TPHE39A                        
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: PHENYLALANYL TRANSFER RNA;                                 
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 OTHER_DETAILS: NUCLEOTIDE SYNTHESIS                                  
KEYWDS    TRUNCATED TRNA, RNA                                                   
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    I.TANAKA,M.YAO,Y.TANAKA,Y.KITAGO,S.YMAGATA                            
REVDAT   3   13-MAR-24 2ZY6    1       REMARK LINK                              
REVDAT   2   04-AUG-09 2ZY6    1       JRNL                                     
REVDAT   1   30-JUN-09 2ZY6    0                                                
JRNL        AUTH   Y.TANAKA,S.YAMAGATA,Y.KITAGO,Y.YAMADA,S.CHIMNARONK,M.YAO,    
JRNL        AUTH 2 I.TANAKA                                                     
JRNL        TITL   DEDUCED RNA BINDING MECHANISM OF THII BASED ON STRUCTURAL    
JRNL        TITL 2 AND BINDING ANALYSES OF A MINIMAL RNA LIGAND                 
JRNL        REF    RNA                           V.  15  1498 2009              
JRNL        REFN                   ISSN 1355-8382                               
JRNL        PMID   19509301                                                     
JRNL        DOI    10.1261/RNA.1614709                                          
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.75 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.2.0019                                      
REMARK   3   AUTHORS     : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER,              
REMARK   3               : NICHOLLS,WINN,LONG,VAGIN                             
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.75                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 27.42                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 93.2                           
REMARK   3   NUMBER OF REFLECTIONS             : 12408                          
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) : 0.209                           
REMARK   3   R VALUE            (WORKING SET) : 0.207                           
REMARK   3   FREE R VALUE                     : 0.240                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 641                             
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 20                           
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 1.75                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 1.80                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 834                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 88.62                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.2730                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 54                           
REMARK   3   BIN FREE R VALUE                    : 0.3070                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 0                                       
REMARK   3   NUCLEIC ACID ATOMS       : 813                                     
REMARK   3   HETEROGEN ATOMS          : 9                                       
REMARK   3   SOLVENT ATOMS            : 161                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 23.80                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 25.07                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 0.41000                                              
REMARK   3    B22 (A**2) : 0.41000                                              
REMARK   3    B33 (A**2) : -0.61000                                             
REMARK   3    B12 (A**2) : 0.20000                                              
REMARK   3    B13 (A**2) : 0.00000                                              
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): 0.130         
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.123         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.078         
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 2.372         
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.953                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.949                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):   908 ; 0.005 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  1414 ; 1.213 ; 3.000       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):   190 ; 0.050 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):   395 ; 0.005 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):   310 ; 0.154 ; 0.200       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):   565 ; 0.267 ; 0.200       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):   131 ; 0.102 ; 0.200       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):    22 ; 0.113 ; 0.200       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):    60 ; 0.131 ; 0.200       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):    27 ; 0.112 ; 0.200       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):     3 ; 0.089 ; 0.200       
REMARK   3   SYMMETRY METAL-ION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.     COUNT   RMS    WEIGHT      
REMARK   3   MAIN-CHAIN BOND REFINED ATOMS  (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   MAIN-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  1296 ; 0.831 ; 3.000       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  1414 ; 1.358 ; 4.500       
REMARK   3   SIDE-CHAIN ANGLE OTHER ATOMS   (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B REFINED ATOMS     (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   LONG RANGE B OTHER ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3 ANISOTROPIC THERMAL FACTOR RESTRAINTS.    COUNT   RMS   WEIGHT       
REMARK   3   RIGID-BOND RESTRAINTS          (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; FREE ATOMS         (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SPHERICITY; BONDED ATOMS       (A**2):  NULL ;  NULL ;  NULL       
REMARK   3                                                                      
REMARK   3  NCS RESTRAINTS STATISTICS                                           
REMARK   3   NUMBER OF DIFFERENT NCS GROUPS : NULL                              
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : NULL                                       
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED : MASK                                                 
REMARK   3   PARAMETERS FOR MASK CALCULATION                                    
REMARK   3   VDW PROBE RADIUS   : 1.20                                          
REMARK   3   ION PROBE RADIUS   : 0.80                                          
REMARK   3   SHRINKAGE RADIUS   : 0.80                                          
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING   
REMARK   3  POSITIONS                                                           
REMARK   4                                                                      
REMARK   4 2ZY6 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 16-JAN-09.                  
REMARK 100 THE DEPOSITION ID IS D_1000028573.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 11-NOV-08                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7.00                               
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : PHOTON FACTORY                     
REMARK 200  BEAMLINE                       : AR-NW12A                           
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.70                               
REMARK 200  MONOCHROMATOR                  : SI 111                             
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 210                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 13064                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.750                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : NULL                               
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 94.1                               
REMARK 200  DATA REDUNDANCY                : 15.30                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.07600                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 23.9000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.75                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.81                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 90.3                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 14.70                              
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.27600                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 12.70                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SAD                          
REMARK 200 SOFTWARE USED: SHELXE                                                
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 52.17                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.57                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 40% MPD, 0.1M HEPES, 0.2M SODIUM         
REMARK 280  CHLORIDE, 0.2M CALCIUM ACETATE, PH7.00, VAPOR DIFFUSION, SITTING    
REMARK 280  DROP, TEMPERATURE 293K                                              
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61 2 2                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -Y,X-Y,Z+1/3                                            
REMARK 290       3555   -X+Y,-X,Z+2/3                                           
REMARK 290       4555   -X,-Y,Z+1/2                                             
REMARK 290       5555   Y,-X+Y,Z+5/6                                            
REMARK 290       6555   X-Y,X,Z+1/6                                             
REMARK 290       7555   Y,X,-Z+1/3                                              
REMARK 290       8555   X-Y,-Y,-Z                                               
REMARK 290       9555   -X,-X+Y,-Z+2/3                                          
REMARK 290      10555   -Y,-X,-Z+5/6                                            
REMARK 290      11555   -X+Y,Y,-Z+1/2                                           
REMARK 290      12555   X,X-Y,-Z+1/6                                            
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       38.40000            
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       76.80000            
REMARK 290   SMTRY1   4 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       57.60000            
REMARK 290   SMTRY1   5  0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   5 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       96.00000            
REMARK 290   SMTRY1   6  0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       19.20000            
REMARK 290   SMTRY1   7 -0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   7  0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       38.40000            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   9 -0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2   9 -0.866025  0.500000  0.000000        0.00000            
REMARK 290   SMTRY3   9  0.000000  0.000000 -1.000000       76.80000            
REMARK 290   SMTRY1  10  0.500000 -0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  10 -0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3  10  0.000000  0.000000 -1.000000       96.00000            
REMARK 290   SMTRY1  11 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2  11  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3  11  0.000000  0.000000 -1.000000       57.60000            
REMARK 290   SMTRY1  12  0.500000  0.866025  0.000000        0.00000            
REMARK 290   SMTRY2  12  0.866025 -0.500000  0.000000        0.00000            
REMARK 290   SMTRY3  12  0.000000  0.000000 -1.000000       19.20000            
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 375                                                                      
REMARK 375 SPECIAL POSITION                                                     
REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS            
REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL          
REMARK 375 POSITIONS.                                                           
REMARK 375                                                                      
REMARK 375 ATOM RES CSSEQI                                                      
REMARK 375 CA    CA A 104  LIES ON A SPECIAL POSITION.                          
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465       A A    39                                                      
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      G A  18   O4' -  C1' -  N9  ANGL. DEV. =   6.7 DEGREES          
REMARK 500      G A  19   C3' -  C2' -  C1' ANGL. DEV. =  -4.2 DEGREES          
REMARK 500      G A  20   C1' -  O4' -  C4' ANGL. DEV. =  -8.3 DEGREES          
REMARK 500      G A  20   O4' -  C1' -  N9  ANGL. DEV. =   5.3 DEGREES          
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                              CA A 106  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   U A   8   OP1                                                    
REMARK 620 2 HOH A 109   O    84.6                                              
REMARK 620 3 HOH A 110   O    87.8 123.7                                        
REMARK 620 4 HOH A 111   O    86.6 147.8  86.8                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 105  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   U A  11   O4                                                     
REMARK 620 2 HOH A  50   O    74.2                                              
REMARK 620 3 HOH A  75   O   133.3 152.5                                        
REMARK 620 4 HOH A  76   O   137.9  72.9  82.1                                  
REMARK 620 5 HOH A 195   O    83.6  93.8  89.7  73.1                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 103  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   G A  12   OP2                                                    
REMARK 620 2   G A  19   O6   90.5                                              
REMARK 620 3 HOH A  40   O    96.0 169.2                                        
REMARK 620 4 HOH A 166   O    94.0  82.3  88.6                                  
REMARK 620 5 HOH A 170   O   177.3  89.1  84.0  83.3                            
REMARK 620 6 HOH A 181   O    97.6  89.0  98.7 165.5  85.0                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 100  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   U A  13   O4                                                     
REMARK 620 2   U A  17   O4  166.0                                              
REMARK 620 3   G A  18   O6   88.0  84.2                                        
REMARK 620 4 HOH A 164   O    99.5  92.9  96.7                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 102  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   U A  13   OP2                                                    
REMARK 620 2 HOH A  44   O   173.8                                              
REMARK 620 3 HOH A 162   O    97.7  81.9                                        
REMARK 620 4 HOH A 172   O   103.5  77.6 158.4                                  
REMARK 620 5 HOH A 179   O    90.1  96.0  89.4  86.1                            
REMARK 620 6 HOH A 194   O    85.3  88.6  95.8  90.4 173.5                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 108  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   G A  26   O6                                                     
REMARK 620 2 HOH A 115   O    72.2                                              
REMARK 620 3 HOH A 206   O    79.9 141.8                                        
REMARK 620 4 HOH A 207   O   111.4  89.5  76.7                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 104  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A  52   O                                                      
REMARK 620 2 HOH A  56   O    70.2                                              
REMARK 620 3 HOH A 187   O   142.7  75.4                                        
REMARK 620 4 HOH A 200   O    78.7  88.6  86.7                                  
REMARK 620 N                    1     2     3                                   
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              CA A 107  CA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH A 114   O                                                      
REMARK 620 2 HOH A 197   O   140.6                                              
REMARK 620 3 HOH A 203   O    69.5  79.3                                        
REMARK 620 4 HOH A 204   O   145.2  68.5 111.0                                  
REMARK 620 5 HOH A 205   O   107.9  77.2 134.1  96.1                            
REMARK 620 N                    1     2     3     4                             
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 100                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CL A 101                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 102                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 103                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 104                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 105                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 106                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 107                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC9                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 108                  
DBREF  2ZY6 A    1    39  PDB    2ZY6     2ZY6             1     39             
SEQRES   1 A   39    G   C   C   C   G   G   A   U   A   G   U   G   U          
SEQRES   2 A   39    C   C   U   U   G   G   G   A   A   A   C   C   G          
SEQRES   3 A   39    A   G   U   C   C   G   G   G   C   A   C   C   A          
HET     MG  A 100       1                                                       
HET     CL  A 101       1                                                       
HET     CA  A 102       1                                                       
HET     CA  A 103       1                                                       
HET     CA  A 104       1                                                       
HET     CA  A 105       1                                                       
HET     CA  A 106       1                                                       
HET     CA  A 107       1                                                       
HET     CA  A 108       1                                                       
HETNAM      MG MAGNESIUM ION                                                    
HETNAM      CL CHLORIDE ION                                                     
HETNAM      CA CALCIUM ION                                                      
FORMUL   2   MG    MG 2+                                                        
FORMUL   3   CL    CL 1-                                                        
FORMUL   4   CA    7(CA 2+)                                                     
FORMUL  11  HOH   *161(H2 O)                                                    
LINK         OP1   U A   8                CA    CA A 106     1555   1555  2.28  
LINK         O4    U A  11                CA    CA A 105     1555   1555  2.58  
LINK         OP2   G A  12                CA    CA A 103     1555   1555  2.21  
LINK         O4    U A  13                MG    MG A 100     1555   1555  2.09  
LINK         OP2   U A  13                CA    CA A 102     1555   1555  2.31  
LINK         O4    U A  17                MG    MG A 100     1555   1555  2.29  
LINK         O6    G A  18                MG    MG A 100     1555   1555  2.26  
LINK         O6    G A  19                CA    CA A 103     1555   1555  2.56  
LINK         O6    G A  26                CA    CA A 108     1555   1555  2.37  
LINK         O   HOH A  40                CA    CA A 103     1555   1555  2.30  
LINK         O   HOH A  44                CA    CA A 102     1555   1555  2.43  
LINK         O   HOH A  50                CA    CA A 105     1555   1555  2.20  
LINK         O   HOH A  52                CA    CA A 104     1555   1555  2.50  
LINK         O   HOH A  56                CA    CA A 104     1555   1555  2.40  
LINK         O   HOH A  75                CA    CA A 105     1555   1555  2.30  
LINK         O   HOH A  76                CA    CA A 105     1555   1555  2.67  
LINK        MG    MG A 100                 O   HOH A 164     1555   1555  2.20  
LINK        CA    CA A 102                 O   HOH A 162     1555   1555  2.35  
LINK        CA    CA A 102                 O   HOH A 172     1555   1555  2.38  
LINK        CA    CA A 102                 O   HOH A 179     1555   1555  2.35  
LINK        CA    CA A 102                 O   HOH A 194     1555   1555  2.37  
LINK        CA    CA A 103                 O   HOH A 166     1555   1555  2.47  
LINK        CA    CA A 103                 O   HOH A 170     1555   1555  2.39  
LINK        CA    CA A 103                 O   HOH A 181     1555   1555  2.42  
LINK        CA    CA A 104                 O   HOH A 187     1555   1555  2.52  
LINK        CA    CA A 104                 O   HOH A 200     1555   1555  2.42  
LINK        CA    CA A 105                 O   HOH A 195     1555   1555  2.25  
LINK        CA    CA A 106                 O   HOH A 109     1555   1555  2.55  
LINK        CA    CA A 106                 O   HOH A 110     1555   1555  2.28  
LINK        CA    CA A 106                 O   HOH A 111     1555   1555  2.41  
LINK        CA    CA A 107                 O   HOH A 114     1555   1555  2.39  
LINK        CA    CA A 107                 O   HOH A 197     1555   1555  2.36  
LINK        CA    CA A 107                 O   HOH A 203     1555   1555  2.49  
LINK        CA    CA A 107                 O   HOH A 204     1555   1555  2.70  
LINK        CA    CA A 107                 O   HOH A 205     1555   1555  2.30  
LINK        CA    CA A 108                 O   HOH A 115     1555   1555  2.23  
LINK        CA    CA A 108                 O   HOH A 206     1555   1555  2.36  
LINK        CA    CA A 108                 O   HOH A 207     1555   1555  2.46  
SITE     1 AC1  5   U A  13    U A  16    U A  17    G A  18                    
SITE     2 AC1  5 HOH A 164                                                     
SITE     1 AC2  5   C A  15    A A  21    A A  22  HOH A  56                    
SITE     2 AC2  5 HOH A 172                                                     
SITE     1 AC3  6   U A  13  HOH A  44  HOH A 162  HOH A 172                    
SITE     2 AC3  6 HOH A 179  HOH A 194                                          
SITE     1 AC4  6   G A  12    G A  19  HOH A  40  HOH A 166                    
SITE     2 AC4  6 HOH A 170  HOH A 181                                          
SITE     1 AC5  4 HOH A  52  HOH A  56  HOH A 187  HOH A 200                    
SITE     1 AC6  7   U A  11  HOH A  43  HOH A  50  HOH A  75                    
SITE     2 AC6  7 HOH A  76  HOH A 184  HOH A 195                               
SITE     1 AC7  6   C A   3    U A   8    C A  37  HOH A 109                    
SITE     2 AC7  6 HOH A 110  HOH A 111                                          
SITE     1 AC8  6   A A   9  HOH A 114  HOH A 197  HOH A 203                    
SITE     2 AC8  6 HOH A 204  HOH A 205                                          
SITE     1 AC9  4   G A  26  HOH A 115  HOH A 206  HOH A 207                    
CRYST1   62.366   62.366  115.200  90.00  90.00 120.00 P 61 2 2     12          
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      0.016034  0.009257  0.000000        0.00000                         
SCALE2      0.000000  0.018515  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008681        0.00000