HEADER    RNA                                     16-NOV-04   1Y0Q              
TITLE     CRYSTAL STRUCTURE OF AN ACTIVE GROUP I RIBOZYME-PRODUCT COMPLEX       
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: GROUP I RIBOZYME;                                          
COMPND   3 CHAIN: A;                                                            
COMPND   4 FRAGMENT: ORF142-I2 INTRON;                                          
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MOL_ID: 2;                                                           
COMPND   7 MOLECULE: 5'-R(*GP*CP*UP*U)-3';                                      
COMPND   8 CHAIN: B;                                                            
COMPND   9 FRAGMENT: 5'-EXON;                                                   
COMPND  10 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: STAPHYLOCOCCUS PHAGE TWORT;                     
SOURCE   3 ORGANISM_TAXID: 55510;                                               
SOURCE   4 GENE: ORF142-I2;                                                     
SOURCE   5 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   6 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   7 EXPRESSION_SYSTEM_STRAIN: XL-1 BLUE;                                 
SOURCE   8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE   9 EXPRESSION_SYSTEM_PLASMID: PUC-19;                                   
SOURCE  10 MOL_ID: 2;                                                           
SOURCE  11 SYNTHETIC: YES;                                                      
SOURCE  12 OTHER_DETAILS: CHEMICALLY SYNTHESIZED RNA OLIGONUCLEOTIDE            
KEYWDS    RIBOZYME, RNA-SPLICING, GUANOSINE-BINDING, RNA-FOLDING, RNA           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    B.L.GOLDEN,H.KIM,E.CHASE                                              
REVDAT   4   14-FEB-24 1Y0Q    1       REMARK LINK                              
REVDAT   3   24-FEB-09 1Y0Q    1       VERSN                                    
REVDAT   2   08-FEB-05 1Y0Q    1       JRNL                                     
REVDAT   1   21-DEC-04 1Y0Q    0                                                
JRNL        AUTH   B.L.GOLDEN,H.KIM,E.CHASE                                     
JRNL        TITL   CRYSTAL STRUCTURE OF A PHAGE TWORT GROUP I RIBOZYME-PRODUCT  
JRNL        TITL 2 COMPLEX                                                      
JRNL        REF    NAT.STRUCT.MOL.BIOL.          V.  12    82 2005              
JRNL        REFN                   ISSN 1545-9993                               
JRNL        PMID   15580277                                                     
JRNL        DOI    10.1038/NSMB868                                              
REMARK   1                                                                      
REMARK   1 REFERENCE 1                                                          
REMARK   1  AUTH   M.LANDTHALER,D.A.SHUB                                        
REMARK   1  TITL   UNEXPECTED ABUNDANCE OF SELF-SPLICING INTRONS IN THE GENOME  
REMARK   1  TITL 2 OF BACTERIOPHAGE TWORT: INTRONS IN MULTIPLE GENES, A SINGLE  
REMARK   1  TITL 3 GENE WITH THREE INTRONS, AND EXON SKIPPING BY GROUP I        
REMARK   1  TITL 4 RIBOZYMES                                                    
REMARK   1  REF    PROC.NATL.ACAD.SCI.USA        V.  96  7005 1999              
REMARK   1  REFN                   ISSN 0027-8424                               
REMARK   2                                                                      
REMARK   2 RESOLUTION.    3.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.1                                              
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 : NULL                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 3.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 19.54                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 515958.480                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 86.4                           
REMARK   3   NUMBER OF REFLECTIONS             : 14373                          
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) : 0.277                           
REMARK   3   FREE R VALUE                     : 0.310                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 713                             
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.012                           
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) : 3.60                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 3.82                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 72.60                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 1891                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3820                       
REMARK   3   BIN FREE R VALUE                    : 0.3880                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 4.90                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 98                           
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.039                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 0                                       
REMARK   3   NUCLEIC ACID ATOMS       : 4973                                    
REMARK   3   HETEROGEN ATOMS          : 23                                      
REMARK   3   SOLVENT ATOMS            : 0                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 102.9                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 142.4                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 9.04000                                              
REMARK   3    B22 (A**2) : -22.67000                                            
REMARK   3    B33 (A**2) : 13.63000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
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) : 0.62                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.58                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 20.0                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.73                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.76                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.300                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 17.40                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.530                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : GROUP                                     
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 : NULL                                                 
REMARK   3   KSOL        : NULL                                                 
REMARK   3   BSOL        : NULL                                                 
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.PARAM                              
REMARK   3  PARAMETER FILE  2  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  3  : SPK.PARAM                                      
REMARK   3  PARAMETER FILE  4  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : DNA-RNA.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : SPK.TOP                                        
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1Y0Q COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 23-NOV-04.                  
REMARK 100 THE DEPOSITION ID IS D_1000030969.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 25-AUG-03                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 8-BM                               
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.979                              
REMARK 200  MONOCHROMATOR                  : SI 111                             
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315                   
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 15937                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 3.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 20.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.0                               
REMARK 200  DATA REDUNDANCY                : 3.900                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.03800                            
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) : 3.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.73                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.90                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.37200                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 3.800                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIR                          
REMARK 200 SOFTWARE USED: DM                                                    
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 70.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.40                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: POTASSIUM CACODYLATE, MAGNESIUM,         
REMARK 280  SPERMINE, LITHIUM SULFATE, PH 6.5, VAPOR DIFFUSION, HANGING DROP,   
REMARK 280  TEMPERATURE 293K                                                    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 21 21 21                       
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X+1/2,-Y,Z+1/2                                         
REMARK 290       3555   -X,Y+1/2,-Z+1/2                                         
REMARK 290       4555   X+1/2,-Y+1/2,-Z                                         
REMARK 290       5555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290       6555   -X,-Y+1/2,Z                                             
REMARK 290       7555   -X+1/2,Y,-Z                                             
REMARK 290       8555   X,-Y,-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       47.28500            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000      105.42500            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000       70.48500            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000      105.42500            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000       47.28500            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000       70.48500            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       47.28500            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       70.48500            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000      105.42500            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       70.48500            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       47.28500            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
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      105.42500            
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: DIMERIC                           
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 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       A A  78    P    OP1  OP2                                       
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   O2     C A   197     N6     A A   246              2.15            
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 126   N9  -  C1' -  C2' ANGL. DEV. =   9.8 DEGREES          
REMARK 500      A A 126   O4' -  C1' -  N9  ANGL. DEV. =   5.8 DEGREES          
REMARK 500      A A 158   C5' -  C4' -  O4' ANGL. DEV. =   7.2 DEGREES          
REMARK 500      U A 186   N1  -  C1' -  C2' ANGL. DEV. =   8.0 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      U A  45         0.09    SIDE CHAIN                              
REMARK 500      A A 104         0.05    SIDE CHAIN                              
REMARK 500      A A 126         0.05    SIDE CHAIN                              
REMARK 500      G A 142         0.05    SIDE CHAIN                              
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                              MG A 255  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   C A 118   O2                                                     
REMARK 620 2   U A 186   OP2 132.0                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 257  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   A A 185   OP1                                                    
REMARK 620 2   A A 187   O3' 115.5                                              
REMARK 620 3   A A 187   OP2  99.2  94.5                                        
REMARK 620 4   A A 187   O5'  79.6  59.8  53.8                                  
REMARK 620 5   U A 188   OP1 106.3  49.8 142.5 104.2                            
REMARK 620 6   G A 252   O3' 170.1  63.9  90.7 107.1  65.4                      
REMARK 620 N                    1     2     3     4     5                       
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 254                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 255                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 256                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 257                  
DBREF  1Y0Q A    9   252  PDB    1Y0Q     1Y0Q             9    252             
DBREF  1Y0Q B    1     4  PDB    1Y0Q     1Y0Q             1      4             
SEQRES   1 A  229    G   A   G   C   C   U   U   U   A   U   A   C   A          
SEQRES   2 A  229    G   U   A   A   U   G   U   A   U   A   U   C   G          
SEQRES   3 A  229    A   A   A   A   A   U   C   C   U   C   U   A   A          
SEQRES   4 A  229    U   U   C   A   G   G   G   A   A   C   A   C   C          
SEQRES   5 A  229    U   A   A   G   G   C   A   A   U   C   C   U   G          
SEQRES   6 A  229    A   G   C   U   A   A   G   C   U   C   U   U   A          
SEQRES   7 A  229    G   U   A   A   U   A   A   G   A   G   A   A   A          
SEQRES   8 A  229    G   U   G   C   A   A   C   G   A   C   U   A   U          
SEQRES   9 A  229    U   C   C   G   A   U   A   G   G   A   A   G   U          
SEQRES  10 A  229    A   G   G   G   U   C   A   A   G   U   G   A   C          
SEQRES  11 A  229    U   C   G   A   A   A   U   G   G   G   G   A   U          
SEQRES  12 A  229    U   A   C   C   C   U   U   C   U   A   G   G   G          
SEQRES  13 A  229    U   A   G   U   G   A   U   A   U   A   G   U   C          
SEQRES  14 A  229    U   G   A   A   C   A   U   A   U   A   U   G   G          
SEQRES  15 A  229    A   A   A   C   A   U   A   U   A   G   A   A   G          
SEQRES  16 A  229    G   A   U   A   G   G   A   G   U   A   A   C   G          
SEQRES  17 A  229    A   A   C   C   U   A   U   C   C   G   U   A   A          
SEQRES  18 A  229    C   A   U   A   A   U   U   G                              
SEQRES   1 B    4    G   C   U   U                                              
HET    SPK  A 253      14                                                       
HET     MG  A 254       1                                                       
HET     MG  A 255       1                                                       
HET     MG  A 256       1                                                       
HET     MG  A 257       1                                                       
HET    SO4  A 301       5                                                       
HETNAM     SPK SPERMINE (FULLY PROTONATED FORM)                                 
HETNAM      MG MAGNESIUM ION                                                    
HETNAM     SO4 SULFATE ION                                                      
FORMUL   3  SPK    C10 H30 N4 4+                                                
FORMUL   4   MG    4(MG 2+)                                                     
FORMUL   8  SO4    O4 S 2-                                                      
LINK         OP1   G A 117                MG    MG A 254     1555   1555  2.68  
LINK         O2    C A 118                MG    MG A 255     1555   1555  2.55  
LINK         OP1   A A 185                MG    MG A 257     1555   1555  2.85  
LINK         OP2   U A 186                MG    MG A 255     1555   1555  2.62  
LINK         O3'   A A 187                MG    MG A 257     1555   1555  3.08  
LINK         OP2   A A 187                MG    MG A 257     1555   1555  2.83  
LINK         O5'   A A 187                MG    MG A 257     1555   1555  2.60  
LINK         OP1   U A 188                MG    MG A 257     1555   1555  2.82  
LINK         N7    G A 190                MG    MG A 256     1555   1555  2.78  
LINK         O3'   G A 252                MG    MG A 257     1555   1555  3.11  
SITE     1 AC1  2   G A 117    A A 123                                          
SITE     1 AC2  3   U A 116    C A 118    U A 186                               
SITE     1 AC3  1   G A 190                                                     
SITE     1 AC4  4   A A 185    A A 187    U A 188    G A 252                    
CRYST1   94.570  140.970  210.850  90.00  90.00  90.00 I 21 21 21    8          
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      0.010574  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.007094  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.004743        0.00000