HEADER RNA 18-FEB-07 2EET TITLE GUANINE RIBOSWITCH A21G, U75C MUTANT BOUND TO HYPOXANTHINE COMPND MOL_ID: 1; COMPND 2 MOLECULE: GUANINE RIBOSWITCH; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS SEQUENCE WAS ENGINEERED BASED ON THE GUANINE SOURCE 4 RIBOSWITCH IN THE 5'UTR OF THE XPT-PBUX GENE IN BACILLUS SUBTILIS. KEYWDS MRNA, RIBOSWITCH, HYPOXANTHINE, GUANINE, RNA-LIGAND COMPLEX, DOUBLE KEYWDS 2 HELIX, THREE-WAY JUNCTION, BASE TRIPLE, RNA EXPDTA X-RAY DIFFRACTION AUTHOR S.D.GILBERT,A.L.EDWARDS,R.T.BATEY REVDAT 4 25-OCT-23 2EET 1 REMARK REVDAT 3 24-FEB-09 2EET 1 VERSN REVDAT 2 27-NOV-07 2EET 1 JRNL REVDAT 1 13-NOV-07 2EET 0 JRNL AUTH S.D.GILBERT,C.E.LOVE,A.L.EDWARDS,R.T.BATEY JRNL TITL MUTATIONAL ANALYSIS OF THE PURINE RIBOSWITCH APTAMER DOMAIN JRNL REF BIOCHEMISTRY V. 46 13297 2007 JRNL REFN ISSN 0006-2960 JRNL PMID 17960911 JRNL DOI 10.1021/BI700410G REMARK 2 REMARK 2 RESOLUTION. 1.95 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.95 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 19.95 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1332366.220 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 92.7 REMARK 3 NUMBER OF REFLECTIONS : 13404 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) : 0.213 REMARK 3 FREE R VALUE : 0.251 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 7.500 REMARK 3 FREE R VALUE TEST SET COUNT : 1005 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.008 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) : 1.95 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.07 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 79.30 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1763 REMARK 3 BIN R VALUE (WORKING SET) : 0.2670 REMARK 3 BIN FREE R VALUE : 0.2760 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 7.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 133 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.024 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 0 REMARK 3 NUCLEIC ACID ATOMS : 1423 REMARK 3 HETEROGEN ATOMS : 98 REMARK 3 SOLVENT ATOMS : 260 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 18.90 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 26.60 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 2.95000 REMARK 3 B22 (A**2) : -1.84000 REMARK 3 B33 (A**2) : -1.10000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -3.46000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.24 REMARK 3 ESD FROM SIGMAA (A) : 0.18 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.30 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.19 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.004 REMARK 3 BOND ANGLES (DEGREES) : 0.900 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.10 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.390 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) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.30 REMARK 3 BSOL : 25.00 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 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 2 : DNA-RNA_REP_REVISE.PARAM REMARK 3 PARAMETER FILE 3 : ION.PARAM REMARK 3 PARAMETER FILE 4 : COHEX_REP.PARAM REMARK 3 PARAMETER FILE 5 : ACETATE.PARAM REMARK 3 PARAMETER FILE 6 : NULL REMARK 3 TOPOLOGY FILE 1 : WATER_REP.TOP REMARK 3 TOPOLOGY FILE 2 : DNA-RNA_REP_REVISE.TOP REMARK 3 TOPOLOGY FILE 3 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : COHEX_REP.TOP REMARK 3 TOPOLOGY FILE 5 : ACETATE.TOP REMARK 3 TOPOLOGY FILE 6 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2EET COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 23-FEB-07. REMARK 100 THE DEPOSITION ID IS D_1000026576. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 27-JUN-06 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 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 : NICKEL FILTER REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS REMARK 200 INTENSITY-INTEGRATION SOFTWARE : D*TREK REMARK 200 DATA SCALING SOFTWARE : D*TREK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13407 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.950 REMARK 200 RESOLUTION RANGE LOW (A) : 19.950 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 92.8 REMARK 200 DATA REDUNDANCY : 4.260 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04800 REMARK 200 FOR THE DATA SET : 19.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.95 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.02 REMARK 200 COMPLETENESS FOR SHELL (%) : 71.8 REMARK 200 DATA REDUNDANCY IN SHELL : 4.13 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.15000 REMARK 200 FOR SHELL : 6.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB ENTRY 1U8D REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46.15 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.28 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 20% POLYETHYLENE GLYCOL 3000, 400MM REMARK 280 AMMONIUM ACETATE, 12MM COBALT HEXAMMINE CHLORIDE, 10 MM K(+)- REMARK 280 HEPES, PH 7.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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+1/2,Y+1/2,Z REMARK 290 4555 -X+1/2,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 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 66.89500 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 17.64000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 66.89500 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 17.64000 REMARK 290 SMTRY3 4 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 U A 34 0.07 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ACT A 96 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 101 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 102 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 103 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 104 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 105 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 106 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 107 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC9 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 108 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 109 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 110 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 111 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO A 112 REMARK 800 REMARK 800 SITE_IDENTIFIER: BC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HPA A 90 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1U8D RELATED DB: PDB REMARK 900 GUANINE RIBOSWITCH BOUND TO HYPOXANTHINE REMARK 900 RELATED ID: 2EES RELATED DB: PDB REMARK 900 GUANINE RIBOSWITCH A21U, U75A MUTANT BOUND TO HYPOXANTHINE REMARK 900 RELATED ID: 2EEU RELATED DB: PDB REMARK 900 GUANINE RIBOSWITCH U22A, A52U MUTANT BOUND TO HYPOXANTHINE REMARK 900 RELATED ID: 2EEV RELATED DB: PDB REMARK 900 GUANINE RIBOSWITCH U22C, A52G MUTANT BOUND TO HYPOXANTHINE REMARK 900 RELATED ID: 2EEW RELATED DB: PDB REMARK 900 GUANINE RIBOSWITCH U47C MUTANT BOUND TO HYPOXANTHINE REMARK 999 REMARK 999 SEQUENCE REMARK 999 RESIDUES G21 AND C75 WERE ENGINEERED FROM A AND U, REMARK 999 RESPECTIVELY, BASED ON THE GUANINE RIBOSWITCH FOUND REMARK 999 IN THE 5'UTR OF THE XPT-PBUX GENE IN BACILLUS SUBTILIS. DBREF 2EET A 15 81 PDB PDB 2EET 1 67 SEQRES 1 A 67 G G A C A U G U A A U C G SEQRES 2 A 67 C G U G G A U A U G G C A SEQRES 3 A 67 C G C A A G U U U C U A C SEQRES 4 A 67 C G G G C A C C G U A A A SEQRES 5 A 67 U G U C C G A C C A U G U SEQRES 6 A 67 C C HET ACT A 96 4 HET NCO A 101 7 HET NCO A 102 7 HET NCO A 103 7 HET NCO A 104 7 HET NCO A 105 7 HET NCO A 106 7 HET NCO A 107 7 HET NCO A 108 7 HET NCO A 109 7 HET NCO A 110 7 HET NCO A 111 7 HET NCO A 112 7 HET HPA A 90 10 HETNAM ACT ACETATE ION HETNAM NCO COBALT HEXAMMINE(III) HETNAM HPA HYPOXANTHINE FORMUL 2 ACT C2 H3 O2 1- FORMUL 3 NCO 12(CO H18 N6 3+) FORMUL 15 HPA C5 H4 N4 O FORMUL 16 HOH *260(H2 O) SITE 1 AC1 5 G A 32 A A 33 G A 38 C A 39 SITE 2 AC1 5 HOH A 129 SITE 1 AC2 11 G A 29 U A 30 A A 66 U A 67 SITE 2 AC2 11 HOH A 138 HOH A 140 HOH A 151 HOH A 192 SITE 3 AC2 11 HOH A 204 HOH A 209 HOH A 253 SITE 1 AC3 10 G A 38 C A 39 G A 56 G A 57 SITE 2 AC3 10 C A 58 HOH A 158 HOH A 176 HOH A 252 SITE 3 AC3 10 HOH A 267 HOH A 270 SITE 1 AC4 11 C A 39 G A 55 G A 56 G A 57 SITE 2 AC4 11 G A 68 U A 69 HOH A 145 HOH A 195 SITE 3 AC4 11 HOH A 214 HOH A 256 HOH A 346 SITE 1 AC5 11 U A 30 G A 31 G A 32 A A 65 SITE 2 AC5 11 A A 66 NCO A 106 HOH A 113 HOH A 115 SITE 3 AC5 11 HOH A 124 HOH A 137 HOH A 148 SITE 1 AC6 8 G A 37 G A 38 A A 40 G A 57 SITE 2 AC6 8 C A 58 HOH A 135 HOH A 171 HOH A 260 SITE 1 AC7 12 C A 26 G A 29 A A 66 G A 68 SITE 2 AC7 12 U A 69 NCO A 104 HOH A 159 HOH A 160 SITE 3 AC7 12 HOH A 235 HOH A 301 HOH A 304 HOH A 330 SITE 1 AC8 5 C A 41 G A 42 C A 53 C A 54 SITE 2 AC8 5 HOH A 117 SITE 1 AC9 6 G A 46 U A 47 C A 50 U A 51 SITE 2 AC9 6 HOH A 220 HOH A 331 SITE 1 BC1 5 A A 24 C A 71 HOH A 232 HOH A 319 SITE 2 BC1 5 HOH A 340 SITE 1 BC2 2 G A 21 U A 22 SITE 1 BC3 5 G A 32 A A 33 U A 34 HOH A 165 SITE 2 BC3 5 HOH A 206 SITE 1 BC4 8 U A 36 G A 42 C A 43 G A 72 SITE 2 BC4 8 A A 73 HOH A 211 HOH A 212 HOH A 272 SITE 1 BC5 9 G A 21 U A 22 U A 47 U A 51 SITE 2 BC5 9 A A 52 A A 73 C A 74 C A 75 SITE 3 BC5 9 HOH A 149 CRYST1 133.790 35.280 41.660 90.00 90.66 90.00 C 1 2 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 0.007474 0.000000 0.000086 0.00000 SCALE2 0.000000 0.028345 0.000000 0.00000 SCALE3 0.000000 0.000000 0.024005 0.00000