1ZFX - Header Asymmetric Unit

HEADER RNA 20-APR-05 1ZFX

TITLE THE STRUCTURE OF A MINIMAL ALL-RNA HAIRPIN RIBOZYME WITH TITLE 2 THE MUTANT G8U AT THE CLEAVAGE SITE

COMPND MOL_ID: 1; COMPND 2 MOLECULE: 5'-R(*UP*CP*CP*CP*AP*GP*UP*CP*CP*AP*CP*CP*G)-3'; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: 5'-R(*CP*GP*GP*UP*GP*AP*UP*AP*AP*GP*GP*G)-3'; COMPND 7 CHAIN: B; COMPND 8 ENGINEERED: YES; COMPND 9 MUTATION: YES; COMPND 10 MOL_ID: 3; COMPND 11 MOLECULE: 5'- COMPND 12 R(*GP*GP*CP*AP*GP*AP*GP*AP*AP*AP*CP*AP*CP*AP*CP*GP*A)-3'; COMPND 13 CHAIN: C; COMPND 14 ENGINEERED: YES; COMPND 15 MUTATION: YES; COMPND 16 MOL_ID: 4; COMPND 17 MOLECULE: 5'- COMPND 18 R(*UP*CP*GP*UP*GP*GP*UP*AP*CP*AP*UP*UP*AP*CP*CP*UP*GP*CP*C) COMPND 19 -3'; COMPND 20 CHAIN: D; COMPND 21 ENGINEERED: YES; COMPND 22 MUTATION: YES

SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: DERIVED FROM SATELLITE TOBACCO RINGSPOT SOURCE 4 VIRUS; SOURCE 5 MOL_ID: 2; SOURCE 6 SYNTHETIC: YES; SOURCE 7 OTHER_DETAILS: DERIVED FROM SATELLITE TOBACCO RINGSPOT SOURCE 8 VIRUS; SOURCE 9 MOL_ID: 3; SOURCE 10 SYNTHETIC: YES; SOURCE 11 OTHER_DETAILS: DERIVED FROM SATELLITE TOBACCO RINGSPOT SOURCE 12 VIRUS; SOURCE 13 MOL_ID: 4; SOURCE 14 SYNTHETIC: YES; SOURCE 15 OTHER_DETAILS: DERIVED FROM SATELLITE TOBACCO RINGSPOT SOURCE 16 VIRUS

KEYWDS HAIRPIN RIBOZYME, ALL-RNA, COBALT HEXAAMINE, MUTATION, LOW KEYWDS 2 SALT, S-TURN, E-LOOP, RIBOSE ZIPPER, CATALYTIC RNA

EXPDTA X-RAY DIFFRACTION

AUTHOR J.E.WEDEKIND

REVDAT 2 24-FEB-09 1ZFX 1 VERSN REVDAT 1 14-FEB-06 1ZFX 0

JRNL AUTH J.SALTER,J.KRUCINSKA,S.ALAM,V.GRUM-TOKARS, JRNL AUTH 2 J.E.WEDEKIND JRNL TITL WATER IN THE ACTIVE SITE OF AN ALL-RNA HAIRPIN JRNL TITL 2 RIBOZYME AND EFFECTS OF GUA8 BASE VARIANTS ON THE JRNL TITL 3 GEOMETRY OF PHOSPHORYL TRANSFER. JRNL REF BIOCHEMISTRY V. 45 686 2006 JRNL REFN ISSN 0006-2960 JRNL PMID 16411744 JRNL DOI 10.1021/BI051887K

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH V.GRUM-TOKARS,M.MILOVANOVIC,J.E.WEDEKIND REMARK 1 TITL CRYSTALLIZATION AND X-RAY DIFFRACTION ANALYSIS OF REMARK 1 TITL 2 AN ALL-RNA U39C MUTANT OF THE MINIMAL HAIRPIN REMARK 1 TITL 3 RIBOZYME REMARK 1 REF ACTA CRYSTALLOGR.,SECT.D V. 59 142 2003 REMARK 1 REFN ISSN 0907-4449 REMARK 1 REFERENCE 2 REMARK 1 AUTH R.PINARD,K.J.HAMPEL,J.E.HECKMAN,D.LAMBERT,P.A.CHAN, REMARK 1 AUTH 2 F.MAJOR,J.M.BURKE REMARK 1 TITL FUNCTIONAL INVOLVEMENT OF G8 IN THE HAIRPIN REMARK 1 TITL 2 RIBOZYME CLEAVAGE MECHANISM REMARK 1 REF EMBO J. V. 20 6434 2001 REMARK 1 REFN ISSN 0261-4189

REMARK 2 REMARK 2 RESOLUTION. 2.38 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 : CNS REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.38 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 46.68 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 924127.970 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 99.5 REMARK 3 NUMBER OF REFLECTIONS : 13267 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) : 0.237 REMARK 3 FREE R VALUE : 0.257 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.300 REMARK 3 FREE R VALUE TEST SET COUNT : 1367 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.007 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 4 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.38 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.62 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 100.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2897 REMARK 3 BIN R VALUE (WORKING SET) : 0.4090 REMARK 3 BIN FREE R VALUE : 0.4220 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 10.30 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 332 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.023 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 0 REMARK 3 NUCLEIC ACID ATOMS : 1308 REMARK 3 HETEROGEN ATOMS : 19 REMARK 3 SOLVENT ATOMS : 21 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 70.80 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 69.90 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -9.50000 REMARK 3 B22 (A**2) : -9.50000 REMARK 3 B33 (A**2) : 19.00000 REMARK 3 B12 (A**2) : -7.80000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.42 REMARK 3 ESD FROM SIGMAA (A) : 0.58 REMARK 3 LOW RESOLUTION CUTOFF (A) : 47.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.47 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.53 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.30 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 16.50 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.79 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) : 1.547 ; 2.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.992 ; 3.500 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.148 ; 3.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 4.037 ; 4.000 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.45 REMARK 3 BSOL : 118.06 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 : ION.PARAM REMARK 3 PARAMETER FILE 2 : DNA-RNA_REP.PARAM REMARK 3 PARAMETER FILE 3 : COBALT.PAR REMARK 3 PARAMETER FILE 4 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : DNA-RNA.TOP REMARK 3 TOPOLOGY FILE 2 : COBALT.TOP REMARK 3 TOPOLOGY FILE 3 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : WATER.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: MLI TARGET THROUGHOUT

REMARK 4 REMARK 4 1ZFX COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 02-MAY-05. REMARK 100 THE RCSB ID CODE IS RCSB032672.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 30-NOV-04 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : CHESS REMARK 200 BEAMLINE : A1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.978 REMARK 200 MONOCHROMATOR : BENT TRIANGULAR ASYMMETRIC REMARK 200 CUT SI(111) MONOCHROMATOR REMARK 200 OPTICS : BENT TRIANGULAR ASYMMETRIC REMARK 200 CUT SI(111) MONOCHROMATOR, RH- REMARK 200 COATED SI MIRROR REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 210 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : ADSC REMARK 200 DATA SCALING SOFTWARE : CRYSTALCLEAR REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13252 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.380 REMARK 200 RESOLUTION RANGE LOW (A) : 47.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -5.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.2 REMARK 200 DATA REDUNDANCY : 8.700 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.03600 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 29.9000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.38 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.47 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.9 REMARK 200 DATA REDUNDANCY IN SHELL : 8.50 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.42900 REMARK 200 <I/SIGMA(I)> FOR SHELL : 5.200 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB ENTRY 1ZFR REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 68.90 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.95 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 2000 MME, LITHIUM SULFATE, REMARK 280 SPERMIDINE, COBALT HEXAAMINE, PH 6.0, VAPOR DIFFUSION, HANGING REMARK 280 DROP, TEMPERATURE 293K

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 61 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+5/6 REMARK 290 6555 X-Y,X,Z+1/6 REMARK 290 7555 Y,X,-Z+1/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+2/3 REMARK 290 10555 -Y,-X,-Z+5/6 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+1/6 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 41.18667 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 82.37333 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 61.78000 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 102.96667 REMARK 290 SMTRY1 6 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 20.59333 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 41.18667 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 82.37333 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 102.96667 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 61.78000 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 0.000000 0.000000 -1.000000 20.59333 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 ASYMMETRIC UNIT COMPRISES CHAINS A, B, C AND D, REMARK 300 WHICH FORM THE BIOLOGICAL UNIT

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: A, B, C, D REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000

REMARK 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 A 6 C2' - C3' - O3' ANGL. DEV. = -16.0 DEGREES REMARK 500 G A 6 O4' - C1' - C2' ANGL. DEV. = 5.5 DEGREES REMARK 500 G A 6 N9 - C1' - C2' ANGL. DEV. = 13.7 DEGREES REMARK 500 G A 6 O4' - C1' - N9 ANGL. DEV. = 6.1 DEGREES 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 SO4 A 103 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO D 101 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCO B 102

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1X9C RELATED DB: PDB REMARK 900 AN ALL-RNA HAIRPIN RIBOZYME WITH MUTATION U39C (LOW SALT) REMARK 900 RELATED ID: 1X9K RELATED DB: PDB REMARK 900 AN ALL-RNA HAIRPIN RIBOZYME WITH MUTATION U39C AND 2MA AT A REMARK 900 -1 (HIGH SALT) REMARK 900 RELATED ID: 1ZFR RELATED DB: PDB REMARK 900 AN ALL-RNA HAIRPIN RIBOZYME WITH MUTATION U39C AND 2MA AT A REMARK 900 -1(LOW SALT) REMARK 900 RELATED ID: 1ZFT RELATED DB: PDB REMARK 900 AN ALL-RNA HAIRPIN RIBOZYME WITH MUTATIONS G8I, U39C AND REMARK 900 2MA AT A-1 (LOW SALT) REMARK 900 RELATED ID: 1ZFV RELATED DB: PDB REMARK 900 AN ALL-RNA HAIRPIN RIBOZYME WITH MUTATIONS G8A, U39C AND 2' REMARK 900 -OH AT A-1 (LOW SALT)

DBREF 1ZFX A 1 13 PDB 1ZFX 1ZFX 1 13 DBREF 1ZFX B 2 13 PDB 1ZFX 1ZFX 2 13 DBREF 1ZFX C 15 31 PDB 1ZFX 1ZFX 15 31 DBREF 1ZFX D 31 49 PDB 1ZFX 1ZFX 31 49

SEQRES 1 A 13 U C C C A G U C C A C C G SEQRES 1 B 12 C G G U G A U A A G G G SEQRES 1 C 17 G G C A G A G A A A C A C SEQRES 2 C 17 A C G A SEQRES 1 D 19 U C G U G G U A C A U U A SEQRES 2 D 19 C C U G C C

HET SO4 A 103 5 HET NCO D 101 7 HET NCO B 102 7

HETNAM SO4 SULFATE ION HETNAM NCO COBALT HEXAMMINE(III)

FORMUL 5 SO4 O4 S 2- FORMUL 6 NCO 2(CO H18 N6 3+) FORMUL 8 HOH *21(H2 O)

SITE 1 AC1 2 C A 2 NCO B 102 SITE 1 AC2 4 A C 20 G C 21 A D 40 U D 41 SITE 1 AC3 4 SO4 A 103 G B 12 G B 13 HOH B 105

CRYST1 93.350 93.350 123.560 90.00 90.00 120.00 P 61 2 2 12

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 0.010712 0.006185 0.000000 0.00000

SCALE2 0.000000 0.012370 0.000000 0.00000

SCALE3 0.000000 0.000000 0.008093 0.00000