PDB Short entry for 2NUF
HEADER    HYDROLASE/RNA                           09-NOV-06   2NUF              
TITLE     CRYSTAL STRUCTURE OF RNASE III FROM AQUIFEX AEOLICUS COMPLEXED WITH   
TITLE    2 DS-RNA AT 2.5-ANGSTROM RESOLUTION                                    
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 28-MER;                                                    
COMPND   3 CHAIN: C, D;                                                         
COMPND   4 ENGINEERED: YES;                                                     
COMPND   5 MOL_ID: 2;                                                           
COMPND   6 MOLECULE: RIBONUCLEASE III;                                          
COMPND   7 CHAIN: A, B;                                                         
COMPND   8 SYNONYM: RNASE III;                                                  
COMPND   9 EC: 3.1.26.3;                                                        
COMPND  10 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 SYNTHETIC: YES;                                                      
SOURCE   3 MOL_ID: 2;                                                           
SOURCE   4 ORGANISM_SCIENTIFIC: AQUIFEX AEOLICUS;                               
SOURCE   5 ORGANISM_TAXID: 63363;                                               
SOURCE   6 GENE: RNC;                                                           
SOURCE   7 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   8 EXPRESSION_SYSTEM_TAXID: 562;                                        
SOURCE   9 EXPRESSION_SYSTEM_STRAIN: BL21(DE3)-RIL;                             
SOURCE  10 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                              
SOURCE  11 EXPRESSION_SYSTEM_PLASMID: PHPK1409                                  
KEYWDS    RIBONUCLEASE III, DSRNA, RNA INTERFERENCE, ENDONUCLEOLYTIC CLEAVAGE,  
KEYWDS   2 HYDROLASE-RNA COMPLEX                                                
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    J.H.GAN,G.SHAW,J.E.TROPEA,D.S.WAUGH,D.L.COURT,X.JI                    
REVDAT   5   18-OCT-17 2NUF    1       REMARK                                   
REVDAT   4   24-FEB-09 2NUF    1       VERSN                                    
REVDAT   3   25-DEC-07 2NUF    1       JRNL                                     
REVDAT   2   18-DEC-07 2NUF    1       JRNL                                     
REVDAT   1   20-NOV-07 2NUF    0                                                
JRNL        AUTH   J.GAN,G.SHAW,J.E.TROPEA,D.S.WAUGH,D.L.COURT,X.JI             
JRNL        TITL   A STEPWISE MODEL FOR DOUBLE-STRANDED RNA PROCESSING BY       
JRNL        TITL 2 RIBONUCLEASE III.                                            
JRNL        REF    MOL.MICROBIOL.                V.  67   143 2007              
JRNL        REFN                   ISSN 0950-382X                               
JRNL        PMID   18047582                                                     
JRNL        DOI    10.1111/J.1365-2958.2007.06032.X                             
REMARK   2                                                                      
REMARK   2 RESOLUTION.    2.50 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : CNS 1.0                                              
REMARK   3   AUTHORS     : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE-              
REMARK   3               : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU,              
REMARK   3               : READ,RICE,SIMONSON,WARREN                            
REMARK   3                                                                      
REMARK   3  REFINEMENT TARGET : ENGH & HUBER                                    
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 2.50                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 29.76                          
REMARK   3   DATA CUTOFF            (SIGMA(F)) : 0.000                          
REMARK   3   DATA CUTOFF HIGH         (ABS(F)) : 502322.380                     
REMARK   3   DATA CUTOFF LOW          (ABS(F)) : 0.0000                         
REMARK   3   COMPLETENESS (WORKING+TEST)   (%) : 84.1                           
REMARK   3   NUMBER OF REFLECTIONS             : 20962                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   CROSS-VALIDATION METHOD          : THROUGHOUT                      
REMARK   3   FREE R VALUE TEST SET SELECTION  : RANDOM                          
REMARK   3   R VALUE            (WORKING SET) : 0.222                           
REMARK   3   FREE R VALUE                     : 0.284                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 4.900                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 1030                            
REMARK   3   ESTIMATED ERROR OF FREE R VALUE  : 0.009                           
REMARK   3                                                                      
REMARK   3  FIT IN THE HIGHEST RESOLUTION BIN.                                  
REMARK   3   TOTAL NUMBER OF BINS USED           : 6                            
REMARK   3   BIN RESOLUTION RANGE HIGH       (A) : 2.50                         
REMARK   3   BIN RESOLUTION RANGE LOW        (A) : 2.66                         
REMARK   3   BIN COMPLETENESS (WORKING+TEST) (%) : 64.90                        
REMARK   3   REFLECTIONS IN BIN    (WORKING SET) : 2542                         
REMARK   3   BIN R VALUE           (WORKING SET) : 0.3300                       
REMARK   3   BIN FREE R VALUE                    : 0.3840                       
REMARK   3   BIN FREE R VALUE TEST SET SIZE  (%) : 5.10                         
REMARK   3   BIN FREE R VALUE TEST SET COUNT     : 137                          
REMARK   3   ESTIMATED ERROR OF BIN FREE R VALUE : 0.033                        
REMARK   3                                                                      
REMARK   3  NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT.                    
REMARK   3   PROTEIN ATOMS            : 3658                                    
REMARK   3   NUCLEIC ACID ATOMS       : 1200                                    
REMARK   3   HETEROGEN ATOMS          : 8                                       
REMARK   3   SOLVENT ATOMS            : 120                                     
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : 49.60                          
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : 56.80                          
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : 14.54000                                             
REMARK   3    B22 (A**2) : -7.68000                                             
REMARK   3    B33 (A**2) : -6.87000                                             
REMARK   3    B12 (A**2) : 0.00000                                              
REMARK   3    B13 (A**2) : 15.37000                                             
REMARK   3    B23 (A**2) : 0.00000                                              
REMARK   3                                                                      
REMARK   3  ESTIMATED COORDINATE ERROR.                                         
REMARK   3   ESD FROM LUZZATI PLOT        (A) : 0.35                            
REMARK   3   ESD FROM SIGMAA              (A) : 0.38                            
REMARK   3   LOW RESOLUTION CUTOFF        (A) : 30.0                            
REMARK   3                                                                      
REMARK   3  CROSS-VALIDATED ESTIMATED COORDINATE ERROR.                         
REMARK   3   ESD FROM C-V LUZZATI PLOT    (A) : 0.48                            
REMARK   3   ESD FROM C-V SIGMAA          (A) : 0.54                            
REMARK   3                                                                      
REMARK   3  RMS DEVIATIONS FROM IDEAL VALUES.                                   
REMARK   3   BOND LENGTHS                 (A) : 0.007                           
REMARK   3   BOND ANGLES            (DEGREES) : 1.200                           
REMARK   3   DIHEDRAL ANGLES        (DEGREES) : 17.40                           
REMARK   3   IMPROPER ANGLES        (DEGREES) : 1.010                           
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL MODEL : RESTRAINED                                
REMARK   3                                                                      
REMARK   3  ISOTROPIC THERMAL FACTOR RESTRAINTS.    RMS    SIGMA                
REMARK   3   MAIN-CHAIN BOND              (A**2) : 2.550 ; 1.500                
REMARK   3   MAIN-CHAIN ANGLE             (A**2) : 4.000 ; 2.000                
REMARK   3   SIDE-CHAIN BOND              (A**2) : 4.110 ; 2.000                
REMARK   3   SIDE-CHAIN ANGLE             (A**2) : 5.860 ; 2.500                
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELING.                                              
REMARK   3   METHOD USED : FLAT MODEL                                           
REMARK   3   KSOL        : 0.34                                                 
REMARK   3   BSOL        : 41.15                                                
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  : PROTEIN_REP.PARAM                              
REMARK   3  PARAMETER FILE  2  : WATER_REP.PARAM                                
REMARK   3  PARAMETER FILE  3  : ION.PARAM                                      
REMARK   3  PARAMETER FILE  4  : DNA-RNA_REP.PARAM                              
REMARK   3  PARAMETER FILE  5  : NULL                                           
REMARK   3  TOPOLOGY FILE  1   : PROTEIN.TOP                                    
REMARK   3  TOPOLOGY FILE  2   : WATER.TOP                                      
REMARK   3  TOPOLOGY FILE  3   : ION.TOP                                        
REMARK   3  TOPOLOGY FILE  4   : DNA-RNA.TOP                                    
REMARK   3  TOPOLOGY FILE  5   : NULL                                           
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 2NUF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 16-NOV-06.                  
REMARK 100 THE DEPOSITION ID IS D_1000040314.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 23-NOV-05                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.5                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 22-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 1.0000                             
REMARK 200  MONOCHROMATOR                  : SILICON                            
REMARK 200  OPTICS                         : MIRROR                             
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : CCD                                
REMARK 200  DETECTOR MANUFACTURER          : MARMOSAIC 300 MM CCD               
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-2000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-2000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 22168                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 2.500                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 30.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : 0.000                              
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 84.5                               
REMARK 200  DATA REDUNDANCY                : 2.300                              
REMARK 200  R MERGE                    (I) : 0.09300                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 8.5000                             
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.50                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 2.59                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 62.6                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 1.40                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.16000                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : 2.900                              
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: AMORE                                                 
REMARK 200 STARTING MODEL: 2EZ6                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 51.80                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.55                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.2 M NACL + 25% W/V PEG 3350 IN 0.1 M   
REMARK 280  TRIS-CL, PH 8.5, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K    
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       25.55000            
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 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: TETRAMERIC                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: C, D, A, B                            
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 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 A     1                                                      
REMARK 465     GLU A   221                                                      
REMARK 465     MET B     1                                                      
REMARK 465     GLU B   221                                                      
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      C C   1   P       C C   1   OP3    -0.076                       
REMARK 500      C D   1   P       C D   1   OP3    -0.088                       
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    ARG A  97       16.53     48.49                                   
REMARK 500    ILE A 100       78.60    -59.79                                   
REMARK 500    ARG A 122       38.48     72.93                                   
REMARK 500    LYS A 191     -126.35     69.50                                   
REMARK 500    ARG B  97       20.17     46.07                                   
REMARK 500    ILE B 100       85.06    -65.83                                   
REMARK 500    LYS B 191     -125.83     68.64                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: PLANAR GROUPS                                              
REMARK 500                                                                      
REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL                 
REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE                    
REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN                    
REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS                        
REMARK 500 AN RMSD GREATER THAN THIS VALUE                                      
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        RMS     TYPE                                    
REMARK 500      G C  12         0.07    SIDE CHAIN                              
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 620                                                                      
REMARK 620 METAL COORDINATION                                                   
REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE):                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG C 202  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   C C   1   OP1                                                    
REMARK 620 2   A C   2   OP2  81.8                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG D 206  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1   C D   1   OP1                                                    
REMARK 620 2   A D   2   OP2  96.4                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 224  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  40   OE1                                                    
REMARK 620 2 HOH A 279   O    81.9                                              
REMARK 620 3 HOH A 277   O    59.9  61.6                                        
REMARK 620 4 HOH A 276   O   101.4 144.7 149.4                                  
REMARK 620 5 HOH A 278   O    75.0 129.2  67.6  84.7                            
REMARK 620 N                    1     2     3     4                             
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG A 223  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 GLU A  40   OE2                                                    
REMARK 620 2 ASP A 107   OD1 105.3                                              
REMARK 620 N                    1                                               
REMARK 620                                                                      
REMARK 620 COORDINATION ANGLES FOR:  M RES CSSEQI METAL                         
REMARK 620                              MG B 223  MG                            
REMARK 620 N RES CSSEQI ATOM                                                    
REMARK 620 1 ASP B 107   OD1                                                    
REMARK 620 2 HOH B 232   O    81.1                                              
REMARK 620 3 HOH B 248   O   150.5 114.0                                        
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 A 222                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG C 202                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 223                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC4                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 224                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC5                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 222                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC6                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG D 206                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC7                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG B 223                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC8                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG D 208                  
REMARK 900                                                                      
REMARK 900 RELATED ENTRIES                                                      
REMARK 900 RELATED ID: 1RC7   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF RNASE III MUTANT E110K FROM AQUIFEX AEOLICUS    
REMARK 900 COMPLEXED WITH DS-RNA (5'-GGCGCGCGCC-3')                             
REMARK 900 RELATED ID: 2EZ6   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF RNASE III MUTANT D44N FROM AQUIFEX AEOLICUS     
REMARK 900 COMPLEXED WITH PRODUCTS AT 2.05-ANGSTROM RESOLUTION                  
REMARK 900 RELATED ID: 1YZ9   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF RNASE III MUTANT E110Q FROM AQUIFEX AEOLICUS    
REMARK 900 COMPLEXED WITH DS-RNA (5'-CGAACUUCGCG-3') AT 2.1-ANGSTROM RESOLUTION 
REMARK 900 RELATED ID: 1YYO   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF RNASE III FROM AQUIFEX AEOLICUS COMPLEXED WITH  
REMARK 900 DS-RNA (5'-CGCGAAUUCGCG-3') AT 2.5-ANGSTROM RESOLUTION               
REMARK 900 RELATED ID: 1YYW   RELATED DB: PDB                                   
REMARK 900 CRYSTAL STRUCTURE OF RNASE III FROM AQUIFEX AEOLICUS COMPLEXED WITH  
REMARK 900 DS-RNA (5'-AAAUAUAUAUUU-3') AT 2.8-ANGSTROM RESOLUTION               
REMARK 900 RELATED ID: 2NUE   RELATED DB: PDB                                   
REMARK 900 RELATED ID: 2NUG   RELATED DB: PDB                                   
DBREF  2NUF A    1   221  UNP    O67082   RNC_AQUAE        1    221             
DBREF  2NUF B    1   221  UNP    O67082   RNC_AQUAE        1    221             
DBREF  2NUF C    1    28  PDB    2NUF     2NUF             1     28             
DBREF  2NUF D    1    28  PDB    2NUF     2NUF             1     28             
SEQRES   1 C   28    C   A   A   G   G   U   C   A   U   U   C   G   C          
SEQRES   2 C   28    A   A   G   A   G   U   G   G   C   C   U   U   G          
SEQRES   3 C   28    C   G                                                      
SEQRES   1 D   28    C   A   A   G   G   U   C   A   U   U   C   G   C          
SEQRES   2 D   28    A   A   G   A   G   U   G   G   C   C   U   U   G          
SEQRES   3 D   28    C   G                                                      
SEQRES   1 A  221  MET LYS MET LEU GLU GLN LEU GLU LYS LYS LEU GLY TYR          
SEQRES   2 A  221  THR PHE LYS ASP LYS SER LEU LEU GLU LYS ALA LEU THR          
SEQRES   3 A  221  HIS VAL SER TYR SER LYS LYS GLU HIS TYR GLU THR LEU          
SEQRES   4 A  221  GLU PHE LEU GLY ASP ALA LEU VAL ASN PHE PHE ILE VAL          
SEQRES   5 A  221  ASP LEU LEU VAL GLN TYR SER PRO ASN LYS ARG GLU GLY          
SEQRES   6 A  221  PHE LEU SER PRO LEU LYS ALA TYR LEU ILE SER GLU GLU          
SEQRES   7 A  221  PHE PHE ASN LEU LEU ALA GLN LYS LEU GLU LEU HIS LYS          
SEQRES   8 A  221  PHE ILE ARG ILE LYS ARG GLY LYS ILE ASN GLU THR ILE          
SEQRES   9 A  221  ILE GLY ASP VAL PHE GLU ALA LEU TRP ALA ALA VAL TYR          
SEQRES  10 A  221  ILE ASP SER GLY ARG ASP ALA ASN PHE THR ARG GLU LEU          
SEQRES  11 A  221  PHE TYR LYS LEU PHE LYS GLU ASP ILE LEU SER ALA ILE          
SEQRES  12 A  221  LYS GLU GLY ARG VAL LYS LYS ASP TYR LYS THR ILE LEU          
SEQRES  13 A  221  GLN GLU ILE THR GLN LYS ARG TRP LYS GLU ARG PRO GLU          
SEQRES  14 A  221  TYR ARG LEU ILE SER VAL GLU GLY PRO HIS HIS LYS LYS          
SEQRES  15 A  221  LYS PHE ILE VAL GLU ALA LYS ILE LYS GLU TYR ARG THR          
SEQRES  16 A  221  LEU GLY GLU GLY LYS SER LYS LYS GLU ALA GLU GLN ARG          
SEQRES  17 A  221  ALA ALA GLU GLU LEU ILE LYS LEU LEU GLU GLU SER GLU          
SEQRES   1 B  221  MET LYS MET LEU GLU GLN LEU GLU LYS LYS LEU GLY TYR          
SEQRES   2 B  221  THR PHE LYS ASP LYS SER LEU LEU GLU LYS ALA LEU THR          
SEQRES   3 B  221  HIS VAL SER TYR SER LYS LYS GLU HIS TYR GLU THR LEU          
SEQRES   4 B  221  GLU PHE LEU GLY ASP ALA LEU VAL ASN PHE PHE ILE VAL          
SEQRES   5 B  221  ASP LEU LEU VAL GLN TYR SER PRO ASN LYS ARG GLU GLY          
SEQRES   6 B  221  PHE LEU SER PRO LEU LYS ALA TYR LEU ILE SER GLU GLU          
SEQRES   7 B  221  PHE PHE ASN LEU LEU ALA GLN LYS LEU GLU LEU HIS LYS          
SEQRES   8 B  221  PHE ILE ARG ILE LYS ARG GLY LYS ILE ASN GLU THR ILE          
SEQRES   9 B  221  ILE GLY ASP VAL PHE GLU ALA LEU TRP ALA ALA VAL TYR          
SEQRES  10 B  221  ILE ASP SER GLY ARG ASP ALA ASN PHE THR ARG GLU LEU          
SEQRES  11 B  221  PHE TYR LYS LEU PHE LYS GLU ASP ILE LEU SER ALA ILE          
SEQRES  12 B  221  LYS GLU GLY ARG VAL LYS LYS ASP TYR LYS THR ILE LEU          
SEQRES  13 B  221  GLN GLU ILE THR GLN LYS ARG TRP LYS GLU ARG PRO GLU          
SEQRES  14 B  221  TYR ARG LEU ILE SER VAL GLU GLY PRO HIS HIS LYS LYS          
SEQRES  15 B  221  LYS PHE ILE VAL GLU ALA LYS ILE LYS GLU TYR ARG THR          
SEQRES  16 B  221  LEU GLY GLU GLY LYS SER LYS LYS GLU ALA GLU GLN ARG          
SEQRES  17 B  221  ALA ALA GLU GLU LEU ILE LYS LEU LEU GLU GLU SER GLU          
HET     MG  C 202       1                                                       
HET     MG  D 206       1                                                       
HET     MG  D 208       1                                                       
HET     MG  A 222       1                                                       
HET     MG  A 223       1                                                       
HET     MG  A 224       1                                                       
HET     MG  B 222       1                                                       
HET     MG  B 223       1                                                       
HETNAM      MG MAGNESIUM ION                                                    
FORMUL   5   MG    8(MG 2+)                                                     
FORMUL  13  HOH   *120(H2 O)                                                    
HELIX    1   1 MET A    3  GLY A   12  1                                  10    
HELIX    2   2 ASP A   17  THR A   26  1                                  10    
HELIX    3   3 TYR A   36  SER A   59  1                                  24    
HELIX    4   4 ARG A   63  ILE A   75  1                                  13    
HELIX    5   5 SER A   76  GLN A   85  1                                  10    
HELIX    6   6 LYS A   86  PHE A   92  5                                   7    
HELIX    7   7 ASN A  101  SER A  120  1                                  20    
HELIX    8   8 ASP A  123  GLU A  145  1                                  23    
HELIX    9   9 ASP A  151  TRP A  164  1                                  14    
HELIX   10  10 SER A  201  SER A  220  1                                  20    
HELIX   11  11 MET B    3  GLY B   12  1                                  10    
HELIX   12  12 ASP B   17  THR B   26  1                                  10    
HELIX   13  13 TYR B   36  SER B   59  1                                  24    
HELIX   14  14 ARG B   63  ILE B   75  1                                  13    
HELIX   15  15 SER B   76  GLN B   85  1                                  10    
HELIX   16  16 LYS B   86  PHE B   92  5                                   7    
HELIX   17  17 ASN B  101  SER B  120  1                                  20    
HELIX   18  18 ASP B  123  GLU B  145  1                                  23    
HELIX   19  19 ASP B  151  TRP B  164  1                                  14    
HELIX   20  20 SER B  201  GLU B  219  1                                  19    
SHEET    1   A 3 GLU A 169  GLU A 176  0                                        
SHEET    2   A 3 LYS A 183  ILE A 190 -1  O  ILE A 185   N  ILE A 173           
SHEET    3   A 3 TYR A 193  GLY A 199 -1  O  GLY A 197   N  VAL A 186           
SHEET    1   B 3 GLU B 169  GLU B 176  0                                        
SHEET    2   B 3 LYS B 183  ILE B 190 -1  O  LYS B 189   N  GLU B 169           
SHEET    3   B 3 TYR B 193  GLY B 199 -1  O  GLY B 197   N  VAL B 186           
LINK         OP1   C C   1                MG    MG C 202     1555   1555  1.99  
LINK         OP2   A C   2                MG    MG C 202     1555   1555  2.37  
LINK         OP1   C D   1                MG    MG D 206     1555   1555  1.90  
LINK         OP1   A D   2                MG    MG D 208     1555   1555  2.19  
LINK         OP2   A D   2                MG    MG D 206     1555   1555  2.06  
LINK         OE1 GLU A  40                MG    MG A 224     1555   1555  2.32  
LINK         OE2 GLU A  40                MG    MG A 223     1555   1555  2.35  
LINK         OD1 ASP A 107                MG    MG A 223     1555   1555  2.15  
LINK         OE2 GLU A 110                MG    MG A 222     1555   1555  2.14  
LINK         OD1 ASP B 107                MG    MG B 223     1555   1555  2.30  
LINK        MG    MG A 224                 O   HOH A 279     1555   1555  2.14  
LINK        MG    MG A 224                 O   HOH A 277     1555   1555  2.41  
LINK        MG    MG A 224                 O   HOH A 276     1555   1555  2.00  
LINK        MG    MG A 224                 O   HOH A 278     1555   1555  2.17  
LINK        MG    MG B 222                 O   HOH B 248     1555   1555  2.00  
LINK        MG    MG B 223                 O   HOH B 232     1555   1555  2.19  
LINK        MG    MG B 223                 O   HOH B 248     1555   1555  2.02  
SITE     1 AC1  2 ASP A  44  GLU A 110                                          
SITE     1 AC2  3   C C   1    A C   2  HOH C 223                               
SITE     1 AC3  3 GLU A  40  ASP A 107  GLU A 110                               
SITE     1 AC4  7 GLU A  40  HOH A 276  HOH A 277  HOH A 278                    
SITE     2 AC4  7 HOH A 279    C C   1    A C   2                               
SITE     1 AC5  4 ASP B  44  GLU B 110  HOH B 248    C D   1                    
SITE     1 AC6  3   C D   1    A D   2  HOH D 210                               
SITE     1 AC7  5 GLU B  40  ASP B 107  GLU B 110  HOH B 232                    
SITE     2 AC7  5 HOH B 248                                                     
SITE     1 AC8  3 GLU B  40    C D   1    A D   2                               
CRYST1   64.100   51.100  113.400  90.00 104.90  90.00 P 1 21 1      4          
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      0.015597  0.000000  0.004154        0.00000                         
SCALE2      0.000000  0.019589  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.009127        0.00000