HEADER RNA 16-MAY-06 2H1M TITLE SYNTHESIS, OXIDATION BEHAVIOR, CRYSTALLIZATION AND STRUCTURE OF 2'- TITLE 2 METHYLSELENO GUANOSINE CONTAINING RNAS COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-R(*GP*CP*AP*(XUG)P*AP*GP*UP*UP*AP*AP*AP*UP*CP*UP*GP*C)- COMPND 3 3'; COMPND 4 CHAIN: A, B; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES KEYWDS A-RNA STRUCTURE, MISMATCH A RNA, RIBONUCLEIC ACID, SE 2'-METHYLSE, KEYWDS 2 RNA EXPDTA X-RAY DIFFRACTION AUTHOR A.A.SERGANOV REVDAT 6 03-APR-24 2H1M 1 REMARK REVDAT 5 14-FEB-24 2H1M 1 REMARK LINK REVDAT 4 13-JUL-11 2H1M 1 VERSN REVDAT 3 24-FEB-09 2H1M 1 VERSN REVDAT 2 01-AUG-06 2H1M 1 JRNL REVDAT 1 18-JUL-06 2H1M 0 JRNL AUTH H.MORODER,C.KREUTZ,K.LANG,A.SERGANOV,R.MICURA JRNL TITL SYNTHESIS, OXIDATION BEHAVIOR, CRYSTALLIZATION AND STRUCTURE JRNL TITL 2 OF 2'-METHYLSELENO GUANOSINE CONTAINING RNAS. JRNL REF J.AM.CHEM.SOC. V. 128 9909 2006 JRNL REFN ISSN 0002-7863 JRNL PMID 16866550 JRNL DOI 10.1021/JA0621400 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.HOBARTNER,R.RIEDER,C.KREUTZ,B.PUFFER,K.LANG,A.POLONSKAIA, REMARK 1 AUTH 2 A.A.SERGANOV,R.MICURA REMARK 1 TITL SYNTHESES OF RNAS WITH UP TO 100 NUCLEOTIDES CONTAINING REMARK 1 TITL 2 SITE-SPECIFIC 2'-METHYLSELENO LABELS FOR USE IN X-RAY REMARK 1 TITL 3 CRYSTALLOGRAPHY. REMARK 1 REF J.AM.CHEM.SOC. V. 127 12035 2005 REMARK 1 REFN ISSN 0002-7863 REMARK 1 REFERENCE 2 REMARK 1 AUTH A.A.SERGANOV,S.KEIPER,L.MALININA,V.TERESHKO,E.SKRIPKIN, REMARK 1 AUTH 2 C.HOBARTNER,A.POLONSKAIA,A.T.PHAN,R.WOMBACHER,R.MICURA, REMARK 1 AUTH 3 Z.DAUTER,A.JASCHKE,D.J.PATEL REMARK 1 TITL STRUCTURAL BASIS FOR DIELS-ALDER RIBOZYME-CATALYZED REMARK 1 TITL 2 CARBON-CARBON BOND FORMATION. REMARK 1 REF NAT.STRUCT.MOL.BIOL. V. 12 218 2005 REMARK 1 REFN ISSN 1545-9993 REMARK 2 REMARK 2 RESOLUTION. 2.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0005 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.2 REMARK 3 NUMBER OF REFLECTIONS : 2118 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.214 REMARK 3 R VALUE (WORKING SET) : 0.212 REMARK 3 FREE R VALUE : 0.239 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.600 REMARK 3 FREE R VALUE TEST SET COUNT : 102 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.90 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.97 REMARK 3 REFLECTION IN BIN (WORKING SET) : 170 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 99.44 REMARK 3 BIN R VALUE (WORKING SET) : 0.3430 REMARK 3 BIN FREE R VALUE SET COUNT : 6 REMARK 3 BIN FREE R VALUE : 0.2490 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 0 REMARK 3 NUCLEIC ACID ATOMS : 680 REMARK 3 HETEROGEN ATOMS : 15 REMARK 3 SOLVENT ATOMS : 0 REMARK 3 REMARK 3 B VALUES. REMARK 3 B VALUE TYPE : LIKELY RESIDUAL REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 35.25 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.86000 REMARK 3 B22 (A**2) : 0.86000 REMARK 3 B33 (A**2) : -1.29000 REMARK 3 B12 (A**2) : 0.43000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): NULL REMARK 3 ESU BASED ON FREE R VALUE (A): 0.406 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.323 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 42.148 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.942 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.949 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 772 ; 0.005 ; 0.021 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 1198 ; 1.125 ; 3.000 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): NULL ; NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 156 ; 0.047 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 332 ; 0.001 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 292 ; 0.154 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 496 ; 0.269 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 9 ; 0.134 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 34 ; 0.108 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 2 ; 0.081 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1088 ; 0.471 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 1198 ; 0.922 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 1 REMARK 3 REMARK 3 TLS GROUP : 1 REMARK 3 NUMBER OF COMPONENTS GROUP : 3 REMARK 3 COMPONENTS C SSSEQI TO C SSSEQI REMARK 3 RESIDUE RANGE : A 1 A 16 REMARK 3 RESIDUE RANGE : B 17 B 32 REMARK 3 RESIDUE RANGE : A 17 A 18 REMARK 3 ORIGIN FOR THE GROUP (A): -17.4451 30.2251 0.2219 REMARK 3 T TENSOR REMARK 3 T11: 0.3097 T22: 0.1852 REMARK 3 T33: 0.1447 T12: 0.1043 REMARK 3 T13: 0.0045 T23: -0.0046 REMARK 3 L TENSOR REMARK 3 L11: 0.3148 L22: 0.1581 REMARK 3 L33: 6.3136 L12: 0.2230 REMARK 3 L13: -0.1367 L23: -0.1174 REMARK 3 S TENSOR REMARK 3 S11: 0.0344 S12: 0.0583 S13: 0.0380 REMARK 3 S21: 0.1622 S22: -0.0879 S23: -0.0038 REMARK 3 S31: 0.7874 S32: 0.4599 S33: 0.0534 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 2H1M COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-MAY-06. REMARK 100 THE DEPOSITION ID IS D_1000037816. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 11-OCT-05 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X25 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.978948 REMARK 200 MONOCHROMATOR : SI 111 CHANNEL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : CBASS REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 2227 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.900 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.2 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.11200 REMARK 200 FOR THE DATA SET : 12.7000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 3.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.5 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.32000 REMARK 200 FOR SHELL : 6.500 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: MOLREP REMARK 200 STARTING MODEL: SIMILAR RNA STRUCTURE FROM THE CRYSTAL GROWN IN REMARK 200 DIFFERENT CONDITIONS. REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 51.72 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.55 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.0 M LI2SO4, 0.1 M NA-CITRATE PH 5.6, REMARK 280 0.5 M ((NH4))2SO4, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE REMARK 280 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: H 3 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 X+2/3,Y+1/3,Z+1/3 REMARK 290 5555 -Y+2/3,X-Y+1/3,Z+1/3 REMARK 290 6555 -X+Y+2/3,-X+1/3,Z+1/3 REMARK 290 7555 X+1/3,Y+2/3,Z+2/3 REMARK 290 8555 -Y+1/3,X-Y+2/3,Z+2/3 REMARK 290 9555 -X+Y+1/3,-X+2/3,Z+2/3 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 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 23.15700 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 13.36970 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 42.78267 REMARK 290 SMTRY1 5 -0.500000 -0.866025 0.000000 23.15700 REMARK 290 SMTRY2 5 0.866025 -0.500000 0.000000 13.36970 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 42.78267 REMARK 290 SMTRY1 6 -0.500000 0.866025 0.000000 23.15700 REMARK 290 SMTRY2 6 -0.866025 -0.500000 0.000000 13.36970 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 42.78267 REMARK 290 SMTRY1 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 26.73940 REMARK 290 SMTRY3 7 0.000000 0.000000 1.000000 85.56533 REMARK 290 SMTRY1 8 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 8 0.866025 -0.500000 0.000000 26.73940 REMARK 290 SMTRY3 8 0.000000 0.000000 1.000000 85.56533 REMARK 290 SMTRY1 9 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 -0.500000 0.000000 26.73940 REMARK 290 SMTRY3 9 0.000000 0.000000 1.000000 85.56533 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA. REMARK 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A DUPLEX RNA. 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: 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 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 17 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 B 2 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 18 DBREF 2H1M A 1 16 PDB 2H1M 2H1M 1 16 DBREF 2H1M B 17 32 PDB 2H1M 2H1M 17 32 SEQRES 1 A 16 G C A XUG A G U U A A A U C SEQRES 2 A 16 U G C SEQRES 1 B 16 G C A XUG A G U U A A A U C SEQRES 2 B 16 U G C MODRES 2H1M XUG A 4 DG MODRES 2H1M XUG B 20 DG HET XUG A 4 24 HET XUG B 20 24 HET SO4 A 17 5 HET SO4 A 18 5 HET SO4 B 2 5 HETNAM XUG 2'-SE-METHYL-2'-SELENOGUANOSINE 5'-(DIHYDROGEN HETNAM 2 XUG PHOSPHATE) HETNAM SO4 SULFATE ION HETSYN XUG (D)-2'-METHYLSELENYL-2'-DEOXYGUANOSINE-5'-PHOSPHATE FORMUL 1 XUG 2(C11 H16 N5 O7 P SE) FORMUL 3 SO4 3(O4 S 2-) LINK O3' A A 3 P XUG A 4 1555 1555 1.60 LINK O3' XUG A 4 P A A 5 1555 1555 1.60 LINK O3' A B 19 P XUG B 20 1555 1555 1.60 LINK O3' XUG B 20 P A B 21 1555 1555 1.60 SITE 1 AC1 2 C A 2 C B 29 SITE 1 AC2 2 C B 18 A B 19 SITE 1 AC3 2 G A 1 C A 16 CRYST1 46.314 46.314 128.348 90.00 90.00 120.00 H 3 18 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 0.021592 0.012466 0.000000 0.00000 SCALE2 0.000000 0.024932 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007791 0.00000