PDB Short entry for 3UCZ
HEADER    SIGNALING PROTEIN/RNA                   27-OCT-11   3UCZ              
TITLE     THE C-DI-GMP-I RIBOSWITCH BOUND TO GPG                                
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A;                      
COMPND   3 CHAIN: P;                                                            
COMPND   4 FRAGMENT: RNA BINDING DOMAIN, UNP RESIDUES 1-98;                     
COMPND   5 SYNONYM: U1 SNRNP A, U1-A, U1A;                                      
COMPND   6 ENGINEERED: YES;                                                     
COMPND   7 MUTATION: YES;                                                       
COMPND   8 MOL_ID: 2;                                                           
COMPND   9 MOLECULE: RNA (92-MER);                                              
COMPND  10 CHAIN: R;                                                            
COMPND  11 ENGINEERED: YES;                                                     
COMPND  12 OTHER_DETAILS: C-DI-GMP-I RIBOSWITCH;                                
COMPND  13 MOL_ID: 3;                                                           
COMPND  14 MOLECULE: RNA (5'-R(*GP*G)-3');                                      
COMPND  15 CHAIN: D;                                                            
COMPND  16 ENGINEERED: YES;                                                     
COMPND  17 OTHER_DETAILS: GPG                                                   
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                                   
SOURCE   3 ORGANISM_COMMON: HUMAN;                                              
SOURCE   4 ORGANISM_TAXID: 9606;                                                
SOURCE   5 GENE: SNRPA;                                                         
SOURCE   6 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   7 EXPRESSION_SYSTEM_TAXID: 511693;                                     
SOURCE   8 EXPRESSION_SYSTEM_STRAIN: BL21;                                      
SOURCE   9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  10 EXPRESSION_SYSTEM_PLASMID: PET11;                                    
SOURCE  11 MOL_ID: 2;                                                           
SOURCE  12 SYNTHETIC: YES;                                                      
SOURCE  13 OTHER_DETAILS: IN VITRO TRANSCRIBED RNA TRANSCRIPT;                  
SOURCE  14 MOL_ID: 3;                                                           
SOURCE  15 SYNTHETIC: YES                                                       
KEYWDS    RIBOSWITCH, SIGNALING PROTEIN-RNA COMPLEX                             
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    K.D.SMITH,S.A.STROBEL                                                 
REVDAT   2   17-OCT-12 3UCZ    1       JRNL                                     
REVDAT   1   04-JAN-12 3UCZ    0                                                
JRNL        AUTH   K.D.SMITH,S.V.LIPCHOCK,S.A.STROBEL                           
JRNL        TITL   STRUCTURAL AND BIOCHEMICAL CHARACTERIZATION OF LINEAR        
JRNL        TITL 2 DINUCLEOTIDE ANALOGUES BOUND TO THE C-DI-GMP-I APTAMER.      
JRNL        REF    BIOCHEMISTRY                  V.  51   425 2012              
JRNL        REFN                   ISSN 0006-2960                               
JRNL        PMID   22148472                                                     
JRNL        DOI    10.1021/BI2016662                                            
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : REFMAC 5.5.0109                                      
REMARK   3   AUTHORS     : MURSHUDOV,VAGIN,DODSON                               
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : MAXIMUM LIKELIHOOD                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 50.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : NULL                           
REMARK   3   COMPLETENESS FOR RANGE        (%) : 99.8                           
REMARK   3   NUMBER OF REFLECTIONS             : 8233                           
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) : 0.206                           
REMARK   3   R VALUE            (WORKING SET) : 0.202                           
REMARK   3   FREE R VALUE                     : 0.269                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.800                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 411                             
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) : 2.80                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.87                         
REMARK   3   REFLECTION IN BIN     (WORKING SET) : 586                          
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 99.84                        
REMARK   3   BIN R VALUE           (WORKING SET) : 0.4170                       
REMARK   3   BIN FREE R VALUE SET COUNT          : 31                           
REMARK   3   BIN FREE R VALUE                    : 0.4780                       
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 742                                     
REMARK   3   NUCLEIC ACID ATOMS       : 2027                                    
REMARK   3   HETEROGEN ATOMS          : 3                                       
REMARK   3   SOLVENT ATOMS            : 32                                      
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  ESTIMATED OVERALL COORDINATE ERROR.                                 
REMARK   3   ESU BASED ON R VALUE                            (A): NULL          
REMARK   3   ESU BASED ON FREE R VALUE                       (A): 0.451         
REMARK   3   ESU BASED ON MAXIMUM LIKELIHOOD                 (A): 0.426         
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      : 0.945                         
REMARK   3   CORRELATION COEFFICIENT FO-FC FREE : 0.901                         
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES        COUNT    RMS    WEIGHT      
REMARK   3   BOND LENGTHS REFINED ATOMS        (A):  3086 ; 0.005 ; 0.021       
REMARK   3   BOND LENGTHS OTHERS               (A):  NULL ;  NULL ;  NULL       
REMARK   3   BOND ANGLES REFINED ATOMS   (DEGREES):  4655 ; 1.072 ; 2.773       
REMARK   3   BOND ANGLES OTHERS          (DEGREES):  NULL ;  NULL ;  NULL       
REMARK   3   TORSION ANGLES, PERIOD 1    (DEGREES):    90 ; 5.133 ; 5.000       
REMARK   3   TORSION ANGLES, PERIOD 2    (DEGREES):    34 ;32.635 ;23.235       
REMARK   3   TORSION ANGLES, PERIOD 3    (DEGREES):   153 ;17.195 ;15.000       
REMARK   3   TORSION ANGLES, PERIOD 4    (DEGREES):     6 ;14.311 ;15.000       
REMARK   3   CHIRAL-CENTER RESTRAINTS       (A**3):  NULL ;  NULL ;  NULL       
REMARK   3   GENERAL PLANES REFINED ATOMS      (A):  1559 ; 0.002 ; 0.020       
REMARK   3   GENERAL PLANES OTHERS             (A):  NULL ;  NULL ;  NULL       
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   SIDE-CHAIN BOND REFINED ATOMS  (A**2):  NULL ;  NULL ;  NULL       
REMARK   3   SIDE-CHAIN ANGLE REFINED 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  : 2                                          
REMARK   3                                                                      
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   P     1        P    94                          
REMARK   3    ORIGIN FOR THE GROUP (A):  15.3478  18.6816   0.4609              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.0820 T22:   0.3710                                     
REMARK   3      T33:   0.2327 T12:   0.0149                                     
REMARK   3      T13:  -0.1163 T23:  -0.0400                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   8.9517 L22:  19.8840                                     
REMARK   3      L33:   6.8554 L12:  -0.1928                                     
REMARK   3      L13:   1.3111 L23:  -4.9613                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.1608 S12:  -0.0520 S13:   0.2183                       
REMARK   3      S21:  -0.2320 S22:   0.1707 S23:  -0.1361                       
REMARK   3      S31:  -0.2382 S32:   0.3667 S33:  -0.0099                       
REMARK   3                                                                      
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    NUMBER OF COMPONENTS GROUP : 1                                    
REMARK   3    COMPONENTS        C SSSEQI   TO  C SSSEQI                         
REMARK   3    RESIDUE RANGE :   R     8        R    98                          
REMARK   3    ORIGIN FOR THE GROUP (A):  12.9689  -2.4965  38.9450              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.3264 T22:   0.1777                                     
REMARK   3      T33:   0.2580 T12:   0.0442                                     
REMARK   3      T13:   0.0872 T23:   0.0088                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   3.4541 L22:   2.5252                                     
REMARK   3      L33:   1.3287 L12:   1.1777                                     
REMARK   3      L13:  -0.7167 L23:  -0.2507                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.2174 S12:  -0.0989 S13:   0.0122                       
REMARK   3      S21:   0.1843 S22:  -0.1490 S23:   0.2530                       
REMARK   3      S31:  -0.1069 S32:  -0.3318 S33:  -0.0684                       
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                                                           
REMARK   4                                                                      
REMARK   4 3UCZ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 31-OCT-11.                  
REMARK 100 THE RCSB ID CODE IS RCSB068598.                                      
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 18-FEB-10                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 6                                  
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : NSLS                               
REMARK 200  BEAMLINE                       : X25                                
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.1                                
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   : 8467                               
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.800                              
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     (%) : 99.7                               
REMARK 200  DATA REDUNDANCY                : NULL                               
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : NULL                               
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.80                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.85                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 99.8                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 6.60                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.85000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.300                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: PHASER                                                
REMARK 200 STARTING MODEL: PDB ENTRY 3MXH                                       
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 40.66                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.07                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 24% PEG550MME, 50 MM MES, PH 6.0, 5 MM   
REMARK 280  MGSO4, 300 MM NACL, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE      
REMARK 280  298K                                                                
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-Z                                             
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       22.67900            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 300 REMARK: THE PROTEIN IS NOT BIOLOGICALLY RELEVANT AND HAS BEEN USED   
REMARK 300 AS A CRYSTALLIZATION CHAPERONE                                       
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TRIMERIC                          
REMARK 350 APPLY THE FOLLOWING TO CHAINS: P, R, D                               
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 465                                                                      
REMARK 465 MISSING RESIDUES                                                     
REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE                       
REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.)                
REMARK 465                                                                      
REMARK 465   M RES C SSSEQI                                                     
REMARK 465     MET P     1                                                      
REMARK 465     ALA P     2                                                      
REMARK 465     VAL P     3                                                      
REMARK 465     PRO P     4                                                      
REMARK 465     GLU P     5                                                      
REMARK 465     THR P     6                                                      
REMARK 465     LYS P    98                                                      
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 R  48   O4' -  C1' -  N9  ANGL. DEV. =   4.8 DEGREES          
REMARK 500      G R  94   O4' -  C1' -  N9  ANGL. DEV. =   4.4 DEGREES          
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASP P  79      -23.25     76.42                                   
REMARK 500    SER P  91     -134.39     54.33                                   
REMARK 500    ASP P  92     -113.08     53.45                                   
REMARK 500    ILE P  94      -85.00    -85.86                                   
REMARK 500    LYS P  96      -69.94     68.11                                   
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 R 670  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH R 691   O                                                      
REMARK 620 2 HOH R 690   O    88.5                                              
REMARK 620 3 HOH R 687   O    90.0  89.6                                        
REMARK 620 4 HOH R 688   O    89.8  90.3 179.9                                  
REMARK 620 5 HOH R 692   O   179.5  91.4  90.5  89.7                            
REMARK 620 6 HOH R 689   O    91.5 180.0  90.4  89.7  88.6                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG R   1  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH R 674   O                                                      
REMARK 620 2 HOH R 675   O    91.5                                              
REMARK 620 3 HOH R 672   O    89.7  89.5                                        
REMARK 620 4 HOH R 671   O    91.0  90.4 179.3                                  
REMARK 620 5 HOH R 676   O    89.2 179.2  90.3  89.8                            
REMARK 620 6 HOH R 673   O   179.2  89.3  90.2  89.2  90.0                      
REMARK 620 N                    1     2     3     4     5                       
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG P  99  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 HOH P 102   O                                                      
REMARK 620 2 HOH P 101   O    88.0                                              
REMARK 620 3 HOH P 100   O    92.8  90.7                                        
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 MG P 99                   
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG R 1                    
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG R 670                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 3UCU   RELATED DB: PDB                                   
REMARK 900 THE SAME RNA IN COMPLEX WITH A DIFFERENT LIGAND.                     
REMARK 900 RELATED ID: 3UD3   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 3UD4   RELATED DB: PDB                                   
DBREF  3UCZ P    1    98  UNP    P09012   SNRPA_HUMAN      1     98             
DBREF  3UCZ R    8    98  PDB    3UCZ     3UCZ             8     98             
DBREF  3UCZ D    1     2  PDB    3UCZ     3UCZ             1      2             
SEQADV 3UCZ HIS P   31  UNP  P09012    TYR    31 ENGINEERED MUTATION            
SEQADV 3UCZ ARG P   36  UNP  P09012    GLN    36 ENGINEERED MUTATION            
SEQRES   1 P   98  MET ALA VAL PRO GLU THR ARG PRO ASN HIS THR ILE TYR          
SEQRES   2 P   98  ILE ASN ASN LEU ASN GLU LYS ILE LYS LYS ASP GLU LEU          
SEQRES   3 P   98  LYS LYS SER LEU HIS ALA ILE PHE SER ARG PHE GLY GLN          
SEQRES   4 P   98  ILE LEU ASP ILE LEU VAL SER ARG SER LEU LYS MET ARG          
SEQRES   5 P   98  GLY GLN ALA PHE VAL ILE PHE LYS GLU VAL SER SER ALA          
SEQRES   6 P   98  THR ASN ALA LEU ARG SER MET GLN GLY PHE PRO PHE TYR          
SEQRES   7 P   98  ASP LYS PRO MET ARG ILE GLN TYR ALA LYS THR ASP SER          
SEQRES   8 P   98  ASP ILE ILE ALA LYS MET LYS                                  
SEQRES   1 R   92  GTP   G   U   C   A   C   G   C   A   C   A   G   G          
SEQRES   2 R   92    G   C   A   A   A   C   C   A   U   U   C   G   A          
SEQRES   3 R   92    A   A   G   A   G   U   G   G   G   A   C   G   C          
SEQRES   4 R   92    A   A   A   G   C   C   U   C   C   G   G   C   C          
SEQRES   5 R   92    U   A   A   A   C   C   A   U   U   G   C   A   C          
SEQRES   6 R   92    U   C   C   G   G   U   A   G   G   U   A   G   C          
SEQRES   7 R   92    G   G   G   G   U   U   A   C   C   G   A   U   G          
SEQRES   8 R   92    G                                                          
SEQRES   1 D    2    G   G                                                      
MODRES 3UCZ GTP R    8    G  GUANOSINE-5'-TRIPHOSPHATE                          
HET    GTP  R   8      32                                                       
HET     MG  P  99       1                                                       
HET     MG  R   1       1                                                       
HET     MG  R 670       1                                                       
HETNAM     GTP GUANOSINE-5'-TRIPHOSPHATE                                        
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   2  GTP    C10 H16 N5 O14 P3                                            
FORMUL   4   MG    3(MG 2+)                                                     
FORMUL   7  HOH   *32(H2 O)                                                     
HELIX    1   1 LYS P   22  SER P   35  1                                  14    
HELIX    2   2 ARG P   36  GLY P   38  5                                   3    
HELIX    3   3 GLU P   61  MET P   72  1                                  12    
SHEET    1   A 4 ILE P  40  LEU P  44  0                                        
SHEET    2   A 4 ALA P  55  PHE P  59 -1  O  ILE P  58   N  LEU P  41           
SHEET    3   A 4 THR P  11  ASN P  15 -1  N  ILE P  14   O  ALA P  55           
SHEET    4   A 4 ARG P  83  TYR P  86 -1  O  GLN P  85   N  TYR P  13           
SHEET    1   B 2 PRO P  76  PHE P  77  0                                        
SHEET    2   B 2 LYS P  80  PRO P  81 -1  O  LYS P  80   N  PHE P  77           
LINK         O3' GTP R   8                 P     G R   9     1555   1555  1.60  
LINK        MG    MG R 670                 O   HOH R 691     1555   1555  2.17  
LINK        MG    MG R   1                 O   HOH R 674     1555   1555  2.18  
LINK        MG    MG P  99                 O   HOH P 102     1555   1555  2.18  
LINK        MG    MG R 670                 O   HOH R 690     1555   1555  2.18  
LINK        MG    MG R 670                 O   HOH R 687     1555   1555  2.18  
LINK        MG    MG R   1                 O   HOH R 675     1555   1555  2.18  
LINK        MG    MG R   1                 O   HOH R 672     1555   1555  2.18  
LINK        MG    MG P  99                 O   HOH P 101     1555   1555  2.18  
LINK        MG    MG R 670                 O   HOH R 688     1555   1555  2.18  
LINK        MG    MG R   1                 O   HOH R 671     1555   1555  2.18  
LINK        MG    MG R 670                 O   HOH R 692     1555   1555  2.18  
LINK        MG    MG R   1                 O   HOH R 676     1555   1555  2.18  
LINK        MG    MG P  99                 O   HOH P 100     1555   1555  2.18  
LINK        MG    MG R 670                 O   HOH R 689     1555   1555  2.18  
LINK        MG    MG R   1                 O   HOH R 673     1555   1555  2.19  
SITE     1 AC1  4 HIS P  31  HOH P 100  HOH P 101  HOH P 102                    
SITE     1 AC2  7   G R  42  HOH R 671  HOH R 672  HOH R 673                    
SITE     2 AC2  7 HOH R 674  HOH R 675  HOH R 676                               
SITE     1 AC3  6 HOH R 687  HOH R 688  HOH R 689  HOH R 690                    
SITE     2 AC3  6 HOH R 691  HOH R 692                                          
CRYST1   49.808   45.358   77.334  90.00  95.81  90.00 P 1 21 1      2          
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      0.020077  0.000000  0.002042        0.00000                         
SCALE2      0.000000  0.022047  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.012998        0.00000