HEADER    RNA                                     21-MAR-11   2YDH              
TITLE     CRYSTAL STRUCTURE OF THE SAM-I RIBOSWITCH A94G U34 G18U G19U VARIANT  
TITLE    2 IN COMPLEX WITH SAM                                                  
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: SAM-I RIBOSWITCH;                                          
COMPND   3 CHAIN: A;                                                            
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MUTATION: YES;                                                       
COMPND   6 OTHER_DETAILS: APTAMER DOMAIN                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 ORGANISM_SCIENTIFIC: THERMOANAEROBACTER TENGCONGENSIS;               
SOURCE   4 ORGANISM_TAXID: 119072                                               
KEYWDS    RNA, K-TURN                                                           
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    K.T.SCHROEDER,P.DALDROP,D.M.J.LILLEY                                  
REVDAT   4   20-DEC-23 2YDH    1       REMARK LINK                              
REVDAT   3   28-SEP-16 2YDH    1       TITLE                                    
REVDAT   2   21-SEP-11 2YDH    1       JRNL                                     
REVDAT   1   07-SEP-11 2YDH    0                                                
JRNL        AUTH   K.T.SCHROEDER,P.DALDROP,D.M.J.LILLEY                         
JRNL        TITL   RNA TERTIARY INTERACTIONS IN A RIBOSWITCH STABILIZE THE      
JRNL        TITL 2 STRUCTURE OF A KINK TURN.                                    
JRNL        REF    STRUCTURE                     V.  19  1233 2011              
JRNL        REFN                   ISSN 0969-2126                               
JRNL        PMID   21893284                                                     
JRNL        DOI    10.1016/J.STR.2011.07.003                                    
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.90 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0109                                      
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) : 2.90                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 57.62                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 92.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 6121                           
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) : 0.274                           
REMARK   3   R VALUE            (WORKING SET) : 0.269                           
REMARK   3   FREE R VALUE                     : 0.321                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 9.800                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 666                             
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) : 2.90                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.98                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 304                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 62.29                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.4390                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 28                           
REMARK   3   BIN FREE R VALUE                    : 0.5360                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 0                                       
REMARK   3   NUCLEIC ACID ATOMS       : 2024                                    
REMARK   3   HETEROGEN ATOMS          : 32                                      
REMARK   3   SOLVENT ATOMS            : 2                                       
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 88.15                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 3.89000                                              
REMARK   3    B22 (A**2) : 3.89000                                              
REMARK   3    B33 (A**2) : -7.78000                                             
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 OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.573         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): NULL          
REMARK   3   ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL          
REMARK   3                                                                      
REMARK   3 CORRELATION COEFFICIENTS.                                            
REMARK   3   CORRELATION COEFFICIENT FO-FC      : 0.925                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.893                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  2287 ; 0.010 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):   785 ; 0.000 ; 0.020       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  3564 ; 1.914 ; 3.000       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  2047 ; 1.531 ; 3.000       
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):   475 ; 0.074 ; 0.200       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):   996 ; 0.007 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):   202 ; 0.010 ; 0.020       
REMARK   3   NON-BONDED CONTACTS REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED CONTACTS OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
REMARK   3   NON-BONDED TORSION OTHERS         (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) REFINED ATOMS      (A):  NULL ;  NULL ;  NULL       
REMARK   3   H-BOND (X...Y) OTHERS             (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION REFINED ATOMS (A):  NULL ;  NULL ;  NULL       
REMARK   3   POTENTIAL METAL-ION OTHERS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW REFINED ATOMS        (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY VDW OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND REFINED ATOMS     (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY H-BOND OTHERS            (A):  NULL ;  NULL ;  NULL       
REMARK   3   SYMMETRY METAL-ION REFINED ATOMS  (A):  NULL ;  NULL ;  NULL       
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):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN BOND OTHER ATOMS    (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED ATOMS (A**2):  NULL ;  NULL ;  NULL       
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   : 1.40                                          
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. U VALUES REFINED INDIVIDUALLY                            
REMARK   4                                                                      
REMARK   4 2YDH COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 21-MAR-11.                  
REMARK 100 THE DEPOSITION ID IS D_1290047769.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 06-DEC-10                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 7                                  
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : ESRF                               
REMARK 200  BEAMLINE                       : ID14-4                             
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                  : NULL                               
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : ADSC QUANTUM 315R                  
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 6875                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.900                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 50.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 2.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 93.1                               
REMARK 200  DATA REDUNDANCY                : 6.100                              
REMARK 200  R MERGE                    (I) : 0.05000                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 40.6000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.90                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 3.00                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 64.5                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 5.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.42000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.440                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: REFMAC                                                
REMARK 200 STARTING MODEL: PDB ENTRY 3GX5                                       
REMARK 200                                                                      
REMARK 200 REMARK: NONE                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 64.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.31                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 40 MM NA-CACODYLATE (PH 7.0), 12 MM      
REMARK 280  SPERMINE-HCL, 12% (V/V) MPD, 80 MM KCL.                             
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 43 21 2                        
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z+1/2                                             
REMARK 290       3555   -Y+1/2,X+1/2,Z+3/4                                      
REMARK 290       4555   Y+1/2,-X+1/2,Z+1/4                                      
REMARK 290       5555   -X+1/2,Y+1/2,-Z+3/4                                     
REMARK 290       6555   X+1/2,-Y+1/2,-Z+1/4                                     
REMARK 290       7555   Y,X,-Z                                                  
REMARK 290       8555   -Y,-X,-Z+1/2                                            
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   2  0.000000  0.000000  1.000000       78.81400            
REMARK 290   SMTRY1   3  0.000000 -1.000000  0.000000       30.94950            
REMARK 290   SMTRY2   3  1.000000  0.000000  0.000000       30.94950            
REMARK 290   SMTRY3   3  0.000000  0.000000  1.000000      118.22100            
REMARK 290   SMTRY1   4  0.000000  1.000000  0.000000       30.94950            
REMARK 290   SMTRY2   4 -1.000000  0.000000  0.000000       30.94950            
REMARK 290   SMTRY3   4  0.000000  0.000000  1.000000       39.40700            
REMARK 290   SMTRY1   5 -1.000000  0.000000  0.000000       30.94950            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       30.94950            
REMARK 290   SMTRY3   5  0.000000  0.000000 -1.000000      118.22100            
REMARK 290   SMTRY1   6  1.000000  0.000000  0.000000       30.94950            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       30.94950            
REMARK 290   SMTRY3   6  0.000000  0.000000 -1.000000       39.40700            
REMARK 290   SMTRY1   7  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   7  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   8  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY2   8 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       78.81400            
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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 3210 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 28870 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -104.3 KCAL/MOL                       
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 350   BIOMT1   2  0.000000 -1.000000  0.000000        0.00000            
REMARK 350   BIOMT2   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT3   2  0.000000  0.000000 -1.000000       78.81400            
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 BA    BA A1098  LIES ON A SPECIAL POSITION.                          
REMARK 400                                                                      
REMARK 400 COMPOUND                                                             
REMARK 400 ENGINEERED RESIDUE IN CHAIN A, G 18 TO U                             
REMARK 400 ENGINEERED RESIDUE IN CHAIN A, G 19 TO U                             
REMARK 400 ENGINEERED RESIDUE IN CHAIN A, U 34 TO C                             
REMARK 400 ENGINEERED RESIDUE IN CHAIN A, A 94 TO G                             
REMARK 480                                                                      
REMARK 480 ZERO OCCUPANCY ATOM                                                  
REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO                  
REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS                
REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME;              
REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):         
REMARK 480   M RES C SSEQI ATOMS                                                
REMARK 480       A A    9   N7   C5   C6   N6   N1   C2   N3                    
REMARK 480       A A    9   C4                                                  
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    -0.119                       
REMARK 500      C A   8   O5'     C A   8   C5'    -0.056                       
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      G A   1   N1  -  C6  -  O6  ANGL. DEV. =   3.8 DEGREES          
REMARK 500      G A   1   C5  -  C6  -  O6  ANGL. DEV. =  -3.8 DEGREES          
REMARK 500      C A   8   C3' -  O3' -  P   ANGL. DEV. =   9.0 DEGREES          
REMARK 500      A A   9   C3' -  O3' -  P   ANGL. DEV. =   8.4 DEGREES          
REMARK 500      A A  33   C3' -  O3' -  P   ANGL. DEV. =   7.3 DEGREES          
REMARK 500      C A  40   O4' -  C1' -  N1  ANGL. DEV. =   5.2 DEGREES          
REMARK 500      G A  43   C3' -  C2' -  C1' ANGL. DEV. =   5.0 DEGREES          
REMARK 500      G A  50   C8  -  N9  -  C4  ANGL. DEV. =  -2.5 DEGREES          
REMARK 500      G A  50   C6  -  C5  -  N7  ANGL. DEV. =  -3.9 DEGREES          
REMARK 500      G A  50   N1  -  C6  -  O6  ANGL. DEV. =   4.8 DEGREES          
REMARK 500      G A  50   C5  -  C6  -  O6  ANGL. DEV. =  -4.1 DEGREES          
REMARK 500      U A  54   O4' -  C1' -  N1  ANGL. DEV. =   4.8 DEGREES          
REMARK 500      G A  58   O5' -  C5' -  C4' ANGL. DEV. =  -5.4 DEGREES          
REMARK 500      G A  58   O4' -  C1' -  N9  ANGL. DEV. =  -5.9 DEGREES          
REMARK 500      A A  61   O4' -  C1' -  N9  ANGL. DEV. =   5.3 DEGREES          
REMARK 500      A A  62   C3' -  C2' -  C1' ANGL. DEV. =   5.0 DEGREES          
REMARK 500      C A  66   O4' -  C1' -  N1  ANGL. DEV. =   5.9 DEGREES          
REMARK 500      G A  68   C3' -  O3' -  P   ANGL. DEV. =   8.4 DEGREES          
REMARK 500      A A  76   N9  -  C1' -  C2' ANGL. DEV. =   8.4 DEGREES          
REMARK 500      U A  81   O5' -  C5' -  C4' ANGL. DEV. =  -5.4 DEGREES          
REMARK 500      U A  88   C4' -  C3' -  C2' ANGL. DEV. =  -8.0 DEGREES          
REMARK 500      A A  90   C8  -  N9  -  C4  ANGL. DEV. =  -2.7 DEGREES          
REMARK 500      A A  90   N9  -  C4  -  C5  ANGL. DEV. =   3.1 DEGREES          
REMARK 500      G A  94   N7  -  C8  -  N9  ANGL. DEV. =   3.2 DEGREES          
REMARK 500      G A  94   C8  -  N9  -  C4  ANGL. DEV. =  -2.6 DEGREES          
REMARK 500      G A  94   N1  -  C6  -  O6  ANGL. DEV. =   4.3 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                              BA A1097  BA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   A A   9   O3'                                                    
REMARK 620 2   A A  10   OP2  44.5                                              
REMARK 620 3   U A  64   OP2 103.8 107.2                                        
REMARK 620 N                    1     2                                         
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              BA A1095  BA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   G A  27   O6                                                     
REMARK 620 2   G A  28   O6   64.1                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              BA A1096  BA                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   U A  64   O2'                                                    
REMARK 620 2   U A  64   O2   66.9                                              
REMARK 620 3   U A  67   O4  135.2 122.2                                        
REMARK 620 N                    1     2                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BA A 1095                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BA A 1096                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BA A 1097                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SAM A 1100                
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 2YGH   RELATED DB: PDB                                   
REMARK 900 SAM-I RIBOSWITCH WITH A G2NA MUTATION IN THE KINK TURN IN COMPLEX    
REMARK 900 WITH S-ADENOSYLMETHIONINE                                            
REMARK 999                                                                      
REMARK 999 SEQUENCE                                                             
REMARK 999 MUTATIONS AT RESIDUES 18, 19, 34 AND 94. SEE REMARK 400              
DBREF  2YDH A    1    94  PDB    2YDH     2YDH             1     94             
SEQRES   1 A   94    G   G   C   U   U   A   U   C   A   A   G   A   G          
SEQRES   2 A   94    A   G   G   U   U   U   A   G   G   G   A   C   U          
SEQRES   3 A   94    G   G   C   C   C   G   A   C   G   A   A   A   C          
SEQRES   4 A   94    C   C   G   G   C   A   A   C   C   A   G   A   A          
SEQRES   5 A   94    A   U   G   G   U   G   C   C   A   A   U   U   C          
SEQRES   6 A   94    C   U   G   C   A   G   C   G   G   A   A   A   C          
SEQRES   7 A   94    G   U   U   G   A   A   A   G   A   U   G   A   G          
SEQRES   8 A   94    C   C   G                                                  
HET     BA  A1095       1                                                       
HET     BA  A1096       1                                                       
HET     BA  A1097       1                                                       
HET     BA  A1098       1                                                       
HET     BA  A1099       1                                                       
HET    SAM  A1100      27                                                       
HETNAM      BA BARIUM ION                                                       
HETNAM     SAM S-ADENOSYLMETHIONINE                                             
FORMUL   2   BA    5(BA 2+)                                                     
FORMUL   7  SAM    C15 H22 N6 O5 S                                              
FORMUL   8  HOH   *2(H2 O)                                                      
LINK         O3'   A A   9                BA    BA A1097     1555   1555  3.48  
LINK         OP2   A A  10                BA    BA A1097     1555   1555  2.87  
LINK         O6    G A  27                BA    BA A1095     1555   1555  2.78  
LINK         O6    G A  28                BA    BA A1095     1555   1555  3.58  
LINK         O2'   U A  64                BA    BA A1096     1555   1555  2.91  
LINK         O2    U A  64                BA    BA A1096     1555   1555  3.35  
LINK         OP2   U A  64                BA    BA A1097     1555   1555  2.45  
LINK         O4    U A  67                BA    BA A1096     1555   1555  3.40  
SITE     1 AC1  2   G A  27    G A  28                                          
SITE     1 AC2  2   U A  64    U A  67                                          
SITE     1 AC3  3   A A   9    A A  10    U A  64                               
SITE     1 AC4 11   A A   6    U A   7    C A   8    G A  11                    
SITE     2 AC4 11   A A  45    C A  47    U A  57    G A  58                    
SITE     3 AC4 11   C A  59    U A  88    G A  89                               
CRYST1   61.899   61.899  157.628  90.00  90.00  90.00 P 43 21 2     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      0.016155  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.016155  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.006344        0.00000