HEADER    RNA-BINDING PROTEIN/RNA                 23-JAN-99   1B7F              
TITLE     SXL-LETHAL PROTEIN/RNA COMPLEX                                        
CAVEAT     1B7F    INCORRECT CHIRALITY AT C1' OF U2, CHAIN Q                    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: RNA (5'-R(P*GP*UP*UP*GP*UP*UP*UP*UP*UP*UP*UP*U)-3');       
COMPND   3 CHAIN: P, Q;                                                         
COMPND   4 SYNONYM: TRA PRE-MRNA;                                               
COMPND   5 ENGINEERED: YES;                                                     
COMPND   6 MOL_ID: 2;                                                           
COMPND   7 MOLECULE: PROTEIN (SXL-LETHAL PROTEIN);                              
COMPND   8 CHAIN: A, B;                                                         
COMPND   9 FRAGMENT: 2 RNP-DOMAINS;                                             
COMPND  10 ENGINEERED: YES;                                                     
COMPND  11 MUTATION: YES                                                        
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 OTHER_DETAILS: ORIGIN OF THE SEQUENCE: DROSOPHILA MELANOGASTER,      
SOURCE   4 NUCLEUS;                                                             
SOURCE   5 MOL_ID: 2;                                                           
SOURCE   6 ORGANISM_SCIENTIFIC: DROSOPHILA MELANOGASTER;                        
SOURCE   7 ORGANISM_COMMON: FRUIT FLY;                                          
SOURCE   8 ORGANISM_TAXID: 7227;                                                
SOURCE   9 CELLULAR_LOCATION: NUCLEUS;                                          
SOURCE  10 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3);                       
SOURCE  11 EXPRESSION_SYSTEM_TAXID: 469008;                                     
SOURCE  12 EXPRESSION_SYSTEM_STRAIN: BL21(DE3);                                 
SOURCE  13 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  14 EXPRESSION_SYSTEM_PLASMID: PK7                                       
KEYWDS    SPLICING REGULATION, RNP DOMAIN, RNA COMPLEX, RIKEN STRUCTURAL        
KEYWDS   2 GENOMICS/PROTEOMICS INITIATIVE, RSGI, STRUCTURAL GENOMICS, RNA-      
KEYWDS   3 BINDING PROTEIN-RNA COMPLEX                                          
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    N.HANDA,O.NUREKI,K.KURIMOTO,I.KIM,H.SAKAMOTO,Y.SHIMURA,Y.MUTO,        
AUTHOR   2 S.YOKOYAMA,RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE (RSGI)    
REVDAT   8   27-DEC-23 1B7F    1       REMARK                                   
REVDAT   7   03-NOV-21 1B7F    1       SEQADV                                   
REVDAT   6   28-DEC-11 1B7F    1       CAVEAT VERSN                             
REVDAT   5   24-FEB-09 1B7F    1       VERSN                                    
REVDAT   4   01-APR-03 1B7F    1       JRNL                                     
REVDAT   3   10-APR-00 1B7F    1       HEADER                                   
REVDAT   2   02-APR-00 1B7F    1       CAVEAT CRYST1 SOURCE DBREF               
REVDAT   2 2                   1       SEQADV                                   
REVDAT   1   03-MAY-99 1B7F    0                                                
JRNL        AUTH   N.HANDA,O.NUREKI,K.KURIMOTO,I.KIM,H.SAKAMOTO,Y.SHIMURA,      
JRNL        AUTH 2 Y.MUTO,S.YOKOYAMA                                            
JRNL        TITL   STRUCTURAL BASIS FOR RECOGNITION OF THE TRA MRNA PRECURSOR   
JRNL        TITL 2 BY THE SEX-LETHAL PROTEIN.                                   
JRNL        REF    NATURE                        V. 398   579 1999              
JRNL        REFN                   ISSN 0028-0836                               
JRNL        PMID   10217141                                                     
JRNL        DOI    10.1038/19242                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.60 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : X-PLOR 3.851                                         
REMARK   3   AUTHORS     : BRUNGER                                              
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.60                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 15.00                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 1.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : NULL                           
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : NULL                           
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 98.5                           
REMARK   3   NUMBER OF REFLECTIONS             : 16907                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : NULL                            
REMARK   3   FREE R VALUE TEST SET SELECTION  : NULL                            
REMARK   3   R VALUE            (WORKING SET) : 0.201                           
REMARK   3   FREE R VALUE                     : 0.294                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.000                           
REMARK   3   FREE R VALUE TEST SET COUNT      : NULL                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : NULL                            
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : NULL                         
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : NULL                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : NULL                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : NULL                         
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : NULL                         
REMARK   3   BIN R VALUE           (WORKING SET) : NULL                         
REMARK   3   BIN FREE R VALUE                    : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : NULL                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : NULL                         
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : NULL                         
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 2658                                    
REMARK   3   NUCLEIC ACID ATOMS       : 494                                     
REMARK   3   HETEROGEN ATOMS          : 0                                       
REMARK   3   SOLVENT ATOMS            : 84                                      
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 COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : NULL                            
REMARK   3   ESD FROM SIGMAA              (A) : NULL                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : NULL                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : NULL                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : NULL                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.009                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.482                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : NULL                            
REMARK   3   IMPROPER ANGLES        (DEGREES) : 0.649                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : NULL                                      
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  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  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 1B7F COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 26-JAN-99.                  
REMARK 100 THE DEPOSITION ID IS D_1000000346.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 15-AUG-96                          
REMARK 200  TEMPERATURE           (KELVIN) : 300                                
REMARK 200  PH                             : 7.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 3                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : N                                  
REMARK 200  RADIATION SOURCE               : ROTATING ANODE                     
REMARK 200  BEAMLINE                       : NULL                               
REMARK 200  X-RAY GENERATOR MODEL          : RIGAKU                             
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.5418                             
REMARK 200  MONOCHROMATOR                  : NI FILTER                          
REMARK 200  OPTICS                         : MIRRORS                            
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : IMAGE PLATE                        
REMARK 200  DETECTOR MANUFACTURER          : RIGAKU RAXIS IV                    
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : DENZO                              
REMARK 200  DATA SCALING SOFTWARE          : SCALEPACK                          
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 17053                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.600                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 40.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 1.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 98.5                               
REMARK 200  DATA REDUNDANCY                : 5.800                              
REMARK 200  R MERGE                    (I) : NULL                               
REMARK 200  R SYM                      (I) : 0.08900                            
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 12.0300                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.60                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.69                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 87.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 3.73                               
REMARK 200  R MERGE FOR SHELL          (I) : NULL                               
REMARK 200  R SYM FOR SHELL            (I) : 0.41100                            
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 1.620                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MIRAS                        
REMARK 200 SOFTWARE USED: MLPHARE                                               
REMARK 200 STARTING MODEL: NULL                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 59.00                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.80                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.0, VAPOR DIFFUSION, HANGING DROP    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: I 2 2 2                          
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,-Y,Z                                                 
REMARK 290       3555   -X,Y,-Z                                                 
REMARK 290       4555   X,-Y,-Z                                                 
REMARK 290       5555   X+1/2,Y+1/2,Z+1/2                                       
REMARK 290       6555   -X+1/2,-Y+1/2,Z+1/2                                     
REMARK 290       7555   -X+1/2,Y+1/2,-Z+1/2                                     
REMARK 290       8555   X+1/2,-Y+1/2,-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        0.00000            
REMARK 290   SMTRY1   3 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   3  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   3  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   4  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   4  0.000000 -1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   4  0.000000  0.000000 -1.000000        0.00000            
REMARK 290   SMTRY1   5  1.000000  0.000000  0.000000       38.95000            
REMARK 290   SMTRY2   5  0.000000  1.000000  0.000000       43.40000            
REMARK 290   SMTRY3   5  0.000000  0.000000  1.000000       80.20000            
REMARK 290   SMTRY1   6 -1.000000  0.000000  0.000000       38.95000            
REMARK 290   SMTRY2   6  0.000000 -1.000000  0.000000       43.40000            
REMARK 290   SMTRY3   6  0.000000  0.000000  1.000000       80.20000            
REMARK 290   SMTRY1   7 -1.000000  0.000000  0.000000       38.95000            
REMARK 290   SMTRY2   7  0.000000  1.000000  0.000000       43.40000            
REMARK 290   SMTRY3   7  0.000000  0.000000 -1.000000       80.20000            
REMARK 290   SMTRY1   8  1.000000  0.000000  0.000000       38.95000            
REMARK 290   SMTRY2   8  0.000000 -1.000000  0.000000       43.40000            
REMARK 290   SMTRY3   8  0.000000  0.000000 -1.000000       80.20000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1, 2                                                    
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: P, 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                                                                      
REMARK 350 BIOMOLECULE: 2                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 APPLY THE FOLLOWING TO CHAINS: Q, 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 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     ALA A   122                                                      
REMARK 465     ALA B   122                                                      
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   O    HOH B   317     O    HOH B   319              1.80            
REMARK 500   C6     U Q     2     O    HOH Q   145              2.09            
REMARK 500   C4'    G Q     1     O    HOH Q   143              2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS                                             
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC             
REMARK 500 SYMMETRY ARE IN CLOSE CONTACT.  AN ATOM LOCATED WITHIN 0.15          
REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A           
REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375             
REMARK 500 INSTEAD OF REMARK 500.  ATOMS WITH NON-BLANK ALTERNATE               
REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS.            
REMARK 500                                                                      
REMARK 500 DISTANCE CUTOFF:                                                     
REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS              
REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS                  
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI  SSYMOP   DISTANCE          
REMARK 500   N7     G P     4     O4     U Q     2     2665     1.88            
REMARK 500   OP2    U P     3     O4     U Q     2     2665     1.97            
REMARK 500   O2     U P     2     O6     G Q     4     2665     2.11            
REMARK 500   OE2  GLU A   206     SG   CYS B   154     1565     2.13            
REMARK 500   O    HOH P    42     O    HOH Q    20     2665     2.19            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: COVALENT BOND LENGTHS                                      
REMARK 500                                                                      
REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES              
REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE               
REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN               
REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                 
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT: (10X,I3,1X,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3)               
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999                        
REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996                     
REMARK 500                                                                      
REMARK 500  M RES CSSEQI ATM1   RES CSSEQI ATM2   DEVIATION                     
REMARK 500      G P   4   C2'     G P   4   C1'    -0.052                       
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 P   1   C1' -  O4' -  C4' ANGL. DEV. =  -4.7 DEGREES          
REMARK 500      G P   1   O4' -  C1' -  N9  ANGL. DEV. =   5.8 DEGREES          
REMARK 500      U P   2   O4' -  C1' -  N1  ANGL. DEV. =   4.8 DEGREES          
REMARK 500      U P   3   C1' -  O4' -  C4' ANGL. DEV. =  -4.3 DEGREES          
REMARK 500      U P   3   O4' -  C1' -  N1  ANGL. DEV. =   6.9 DEGREES          
REMARK 500      U P   5   O4' -  C1' -  N1  ANGL. DEV. =   4.5 DEGREES          
REMARK 500      U P  10   O4' -  C1' -  N1  ANGL. DEV. =   4.7 DEGREES          
REMARK 500      U Q   6   O4' -  C1' -  N1  ANGL. DEV. =   5.1 DEGREES          
REMARK 500      U Q  12   O4' -  C1' -  N1  ANGL. DEV. =   4.2 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    ASN A 124     -106.42   -144.64                                   
REMARK 500    MET A 157       93.04     53.01                                   
REMARK 500    LYS A 161      -81.42    103.78                                   
REMARK 500    ARG A 192     -111.74     52.86                                   
REMARK 500    LEU A 247      -72.03    -76.84                                   
REMARK 500    ASN A 274       15.18     58.65                                   
REMARK 500    ASN B 124     -107.56   -109.69                                   
REMARK 500    MET B 157       89.49     55.21                                   
REMARK 500    TYR B 160      170.53    -53.82                                   
REMARK 500    LYS B 161      -77.84     82.98                                   
REMARK 500    ARG B 192     -110.69     53.41                                   
REMARK 500    ASN B 274       19.76     55.32                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: TRT001000189.1   RELATED DB: TARGETDB                    
DBREF  1B7F A  122   289  UNP    P19339   SXL_DROME       82    249             
DBREF  1B7F B  122   289  UNP    P19339   SXL_DROME       82    249             
DBREF  1B7F P    1    12  PDB    1B7F     1B7F             1     12             
DBREF  1B7F Q    1    12  PDB    1B7F     1B7F             1     12             
SEQADV 1B7F TYR A  166  UNP  P19339    PHE   126 ENGINEERED MUTATION            
SEQADV 1B7F TYR B  166  UNP  P19339    PHE   126 ENGINEERED MUTATION            
SEQRES   1 P   12    G   U   U   G   U   U   U   U   U   U   U   U              
SEQRES   1 Q   12    G   U   U   G   U   U   U   U   U   U   U   U              
SEQRES   1 A  168  ALA SER ASN THR ASN LEU ILE VAL ASN TYR LEU PRO GLN          
SEQRES   2 A  168  ASP MET THR ASP ARG GLU LEU TYR ALA LEU PHE ARG ALA          
SEQRES   3 A  168  ILE GLY PRO ILE ASN THR CYS ARG ILE MET ARG ASP TYR          
SEQRES   4 A  168  LYS THR GLY TYR SER TYR GLY TYR ALA PHE VAL ASP PHE          
SEQRES   5 A  168  THR SER GLU MET ASP SER GLN ARG ALA ILE LYS VAL LEU          
SEQRES   6 A  168  ASN GLY ILE THR VAL ARG ASN LYS ARG LEU LYS VAL SER          
SEQRES   7 A  168  TYR ALA ARG PRO GLY GLY GLU SER ILE LYS ASP THR ASN          
SEQRES   8 A  168  LEU TYR VAL THR ASN LEU PRO ARG THR ILE THR ASP ASP          
SEQRES   9 A  168  GLN LEU ASP THR ILE PHE GLY LYS TYR GLY SER ILE VAL          
SEQRES  10 A  168  GLN LYS ASN ILE LEU ARG ASP LYS LEU THR GLY ARG PRO          
SEQRES  11 A  168  ARG GLY VAL ALA PHE VAL ARG TYR ASN LYS ARG GLU GLU          
SEQRES  12 A  168  ALA GLN GLU ALA ILE SER ALA LEU ASN ASN VAL ILE PRO          
SEQRES  13 A  168  GLU GLY GLY SER GLN PRO LEU SER VAL ARG LEU ALA              
SEQRES   1 B  168  ALA SER ASN THR ASN LEU ILE VAL ASN TYR LEU PRO GLN          
SEQRES   2 B  168  ASP MET THR ASP ARG GLU LEU TYR ALA LEU PHE ARG ALA          
SEQRES   3 B  168  ILE GLY PRO ILE ASN THR CYS ARG ILE MET ARG ASP TYR          
SEQRES   4 B  168  LYS THR GLY TYR SER TYR GLY TYR ALA PHE VAL ASP PHE          
SEQRES   5 B  168  THR SER GLU MET ASP SER GLN ARG ALA ILE LYS VAL LEU          
SEQRES   6 B  168  ASN GLY ILE THR VAL ARG ASN LYS ARG LEU LYS VAL SER          
SEQRES   7 B  168  TYR ALA ARG PRO GLY GLY GLU SER ILE LYS ASP THR ASN          
SEQRES   8 B  168  LEU TYR VAL THR ASN LEU PRO ARG THR ILE THR ASP ASP          
SEQRES   9 B  168  GLN LEU ASP THR ILE PHE GLY LYS TYR GLY SER ILE VAL          
SEQRES  10 B  168  GLN LYS ASN ILE LEU ARG ASP LYS LEU THR GLY ARG PRO          
SEQRES  11 B  168  ARG GLY VAL ALA PHE VAL ARG TYR ASN LYS ARG GLU GLU          
SEQRES  12 B  168  ALA GLN GLU ALA ILE SER ALA LEU ASN ASN VAL ILE PRO          
SEQRES  13 B  168  GLU GLY GLY SER GLN PRO LEU SER VAL ARG LEU ALA              
FORMUL   5  HOH   *84(H2 O)                                                     
HELIX    1   1 ASP A  138  ARG A  146  1                                   9    
HELIX    2   2 GLU A  176  LEU A  186  1                                  11    
HELIX    3   3 ASP A  224  PHE A  231  1                                   8    
HELIX    4   4 ARG A  262  LEU A  272  1                                  11    
HELIX    5   5 ASP B  138  ARG B  146  1                                   9    
HELIX    6   6 GLU B  176  LEU B  186  1                                  11    
HELIX    7   7 ASP B  224  PHE B  231  1                                   8    
HELIX    8   8 ARG B  262  LEU B  272  1                                  11    
SHEET    1   A 4 LYS A 197  TYR A 200  0                                        
SHEET    2   A 4 ASN A 126  ASN A 130 -1  N  ASN A 130   O  LYS A 197           
SHEET    3   A 4 TYR A 168  PHE A 173 -1  N  VAL A 171   O  LEU A 127           
SHEET    4   A 4 ILE A 151  ARG A 155 -1  N  ARG A 155   O  PHE A 170           
SHEET    1   B 4 SER A 285  LEU A 288  0                                        
SHEET    2   B 4 ASN A 212  THR A 216 -1  N  THR A 216   O  SER A 285           
SHEET    3   B 4 ALA A 255  TYR A 259 -1  N  VAL A 257   O  LEU A 213           
SHEET    4   B 4 ILE A 237  ILE A 242 -1  N  ASN A 217   O  PHE A 256           
SHEET    1   C 4 LYS B 197  TYR B 200  0                                        
SHEET    2   C 4 ASN B 126  ASN B 130 -1  N  ASN B 130   O  LYS B 197           
SHEET    3   C 4 TYR B 168  PHE B 173 -1  N  VAL B 171   O  LEU B 127           
SHEET    4   C 4 ILE B 151  ARG B 155 -1  N  ARG B 155   O  PHE B 170           
SHEET    1   D 4 SER B 285  LEU B 288  0                                        
SHEET    2   D 4 ASN B 212  THR B 216 -1  N  THR B 216   O  SER B 285           
SHEET    3   D 4 ALA B 255  TYR B 259 -1  N  VAL B 257   O  LEU B 213           
SHEET    4   D 4 ILE B 237  ILE B 242 -1  N  ASN B 241   O  PHE B 256           
CRYST1   77.900   86.800  160.400  90.00  90.00  90.00 I 2 2 2      16          
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      0.012837  0.000000  0.000000        0.00000                         
SCALE2      0.000000  0.011521  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.006234        0.00000                         
MTRIX1   1  0.997180  0.040710  0.063090       -6.10733    1                    
MTRIX2   1  0.062110  0.024900 -0.997760      164.80821    1                    
MTRIX3   1 -0.042190  0.998860  0.022300       78.86401    1