3RN3 - Header Asymmetric Unit

HEADER HYDROLASE (NUCLEIC ACID,RNA) 30-OCT-91 3RN3

TITLE SEGMENTED ANISOTROPIC REFINEMENT OF BOVINE RIBONUCLEASE A TITLE 2 BY THE APPLICATION OF THE RIGID-BODY TLS MODEL

COMPND MOL_ID: 1; COMPND 2 MOLECULE: RIBONUCLEASE A; COMPND 3 CHAIN: A; COMPND 4 EC: 3.1.27.5; COMPND 5 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: PANCREAS

KEYWDS HYDROLASE (NUCLEIC ACID,RNA)

EXPDTA X-RAY DIFFRACTION

AUTHOR B.HOWLIN,D.S.MOSS,G.W.HARRIS,R.A.PALMER

REVDAT 2 24-FEB-09 3RN3 1 VERSN REVDAT 1 31-OCT-91 3RN3 0

SPRSDE 15-OCT-91 3RN3 1RN3

JRNL AUTH B.HOWLIN,D.S.MOSS,G.W.HARRIS JRNL TITL SEGMENTED ANISOTROPIC REFINEMENT OF BOVINE JRNL TITL 2 RIBONUCLEASE A BY THE APPLICATION OF THE JRNL TITL 3 RIGID-BODY TLS MODEL. JRNL REF ACTA CRYSTALLOGR.,SECT.A V. 45 851 1989 JRNL REFN ISSN 0108-7673 JRNL PMID 2619965 JRNL DOI 10.1107/S0108767389009177

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH G.W.HARRIS,N.BORKAKOTI,D.S.MOSS,R.A.PALMER,B.HOWLIN REMARK 1 TITL RIBONUCLEASE A. ANALYSIS OF THE HYDROGEN BOND REMARK 1 TITL 2 GEOMETRY, AND SPATIAL ACCESSIBILITY AT THE ACTIVE REMARK 1 TITL 3 SITE REMARK 1 REF BIOCHIM.BIOPHYS.ACTA V. 912 348 1987 REMARK 1 REFN ISSN 0006-3002 REMARK 1 REFERENCE 2 REMARK 1 AUTH A.WLODAWER,N.BORKAKOTI,D.S.MOSS,B.HOWLIN REMARK 1 TITL COMPARISON OF TWO INDEPENDENTLY REFINED MODELS OF REMARK 1 TITL 2 RIBONUCLEASE-A REMARK 1 REF ACTA CRYSTALLOGR.,SECT.B V. 42 379 1986 REMARK 1 REFN ISSN 0108-7681 REMARK 1 REFERENCE 3 REMARK 1 AUTH N.BORKAKOTI,D.S.MOSS,M.J.STANFORD,R.A.PALMER REMARK 1 TITL THE REFINED STRUCTURE OF RIBONUCLEASE-A AT 1.45 REMARK 1 TITL 2 ANGSTROMS RESOLUTION REMARK 1 REF J.CRYSTALLOGR.SPECTROSC.RES. V. 14 467 1984 REMARK 1 REFN ISSN 0277-8068 REMARK 1 REFERENCE 4 REMARK 1 AUTH N.BORKAKOTI,R.A.PALMER,I.HANEEF,D.S.MOSS REMARK 1 TITL SPECIFICITY OF PANCREATIC RIBONUCLEASE-A. AN X-RAY REMARK 1 TITL 2 STUDY OF A PROTEIN-NUCLEOTIDE COMPLEX REMARK 1 REF J.MOL.BIOL. V. 169 743 1983 REMARK 1 REFN ISSN 0022-2836 REMARK 1 REFERENCE 5 REMARK 1 AUTH N.BORKAKOTI REMARK 1 TITL THE ACTIVE SITE OF RIBONUCLEASE A FROM THE REMARK 1 TITL 2 CRYSTALLOGRAPHIC STUDIES OF REMARK 1 TITL 3 RIBONUCLEASE-A-INHIBITOR COMPLEXES REMARK 1 REF EUR.J.BIOCHEM. V. 132 89 1983 REMARK 1 REFN ISSN 0014-2956 REMARK 1 REFERENCE 6 REMARK 1 AUTH N.BORKAKOTI,D.S.MOSS,R.A.PALMER REMARK 1 TITL RIBONUCLEASE-A. LEAST-SQUARES REFINEMENT OF THE REMARK 1 TITL 2 STRUCTURE AT 1.45 ANGSTROMS RESOLUTION REMARK 1 REF ACTA CRYSTALLOGR.,SECT.B V. 38 2210 1982 REMARK 1 REFN ISSN 0108-7681 REMARK 1 REFERENCE 7 REMARK 1 AUTH C.H.CARLISLE,R.A.PALMER,S.K.MAZUMDAR,B.A.GORINSKY, REMARK 1 AUTH 2 D.G.R.YEATES REMARK 1 TITL THE STRUCTURE OF RIBONUCLEASE AT 2.5 ANGSTROM REMARK 1 TITL 2 RESOLUTION REMARK 1 REF J.MOL.BIOL. V. 85 1 1974 REMARK 1 REFN ISSN 0022-2836

REMARK 2 REMARK 2 RESOLUTION. 1.45 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : RESTRAIN REMARK 3 AUTHORS : MOSS,DRIESSEN,HANEEF,HOWLIN,HARRIS REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.45 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 19238 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 + TEST SET) : 0.223 REMARK 3 R VALUE (WORKING SET) : NULL REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 957 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 5 REMARK 3 SOLVENT ATOMS : 107 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 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.150 ; NULL REMARK 3 ANGLE DISTANCE (A) : 0.050 ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; 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 OTHER REFINEMENT REMARKS: THE CARBOXAMIDE TERMINI OF RESIDUES REMARK 3 ASN 24, ASN 27, ASN 67, GLN 69, ASN 71, GLN 74, ASN 94, AND REMARK 3 ASN 103 WERE "FLIPPED" BY 180 DEGREES TO CONFORM TO THE REMARK 3 ASSIGNMENT OBSERVED IN THE STRUCTURE DEPOSITED BY WLODAWER ET REMARK 3 AL (ENTRY 7RSA).

REMARK 4 REMARK 4 3RN3 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.57 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.18 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL

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 19.18450 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: 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 400 REMARK 400 COMPOUND REMARK 400 REMARK 400 A SECOND SITE HAS BEEN LOCATED AND REFINED FOR HIS 119.

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 A 228 O HOH A 229 1.84 REMARK 500 NZ LYS A 66 O HOH A 230 2.10 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 O HOH A 205 O HOH A 231 1455 1.80 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 HIS A 119 CG HIS A 119 CD2 0.074 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 ARG A 10 NE - CZ - NH1 ANGL. DEV. = 10.5 DEGREES REMARK 500 ARG A 10 NE - CZ - NH2 ANGL. DEV. = -8.8 DEGREES REMARK 500 HIS A 12 CE1 - NE2 - CD2 ANGL. DEV. = 4.3 DEGREES REMARK 500 ASN A 24 CA - CB - CG ANGL. DEV. = -14.8 DEGREES REMARK 500 TYR A 25 CB - CG - CD1 ANGL. DEV. = -5.9 DEGREES REMARK 500 TYR A 25 CG - CD1 - CE1 ANGL. DEV. = -6.8 DEGREES REMARK 500 ARG A 33 NE - CZ - NH1 ANGL. DEV. = 5.2 DEGREES REMARK 500 ASN A 34 OD1 - CG - ND2 ANGL. DEV. = 14.7 DEGREES REMARK 500 ASN A 34 CB - CG - OD1 ANGL. DEV. = -13.8 DEGREES REMARK 500 ASN A 34 O - C - N ANGL. DEV. = -9.8 DEGREES REMARK 500 ASP A 38 CB - CG - OD2 ANGL. DEV. = -5.8 DEGREES REMARK 500 ASN A 62 CB - CG - OD1 ANGL. DEV. = -12.3 DEGREES REMARK 500 ASN A 62 CB - CG - ND2 ANGL. DEV. = 15.1 DEGREES REMARK 500 VAL A 63 CG1 - CB - CG2 ANGL. DEV. = 10.1 DEGREES REMARK 500 ARG A 85 NE - CZ - NH2 ANGL. DEV. = -6.1 DEGREES REMARK 500 TYR A 92 CB - CG - CD2 ANGL. DEV. = -7.2 DEGREES REMARK 500 TYR A 97 CB - CG - CD2 ANGL. DEV. = -4.8 DEGREES REMARK 500 TYR A 97 CG - CD2 - CE2 ANGL. DEV. = -6.9 DEGREES REMARK 500 TYR A 97 O - C - N ANGL. DEV. = 12.1 DEGREES REMARK 500 TYR A 115 CB - CG - CD2 ANGL. DEV. = -9.7 DEGREES REMARK 500 TYR A 115 CB - CG - CD1 ANGL. DEV. = 4.9 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 HIS A 48 66.66 -100.06 REMARK 500 GLN A 60 -139.65 -103.15 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 ARG A 39 0.25 SIDE_CHAIN REMARK 500 REMARK 500 REMARK: NULL

REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 248 DISTANCE = 6.14 ANGSTROMS REMARK 525 HOH A 260 DISTANCE = 7.18 ANGSTROMS REMARK 525 HOH A 261 DISTANCE = 5.42 ANGSTROMS REMARK 525 HOH A 273 DISTANCE = 5.14 ANGSTROMS REMARK 525 HOH A 275 DISTANCE = 5.98 ANGSTROMS REMARK 525 HOH A 335 DISTANCE = 7.49 ANGSTROMS

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: NULL REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 155

DBREF 3RN3 A 1 124 UNP P61823 RNAS1_BOVIN 27 150

SEQRES 1 A 124 LYS GLU THR ALA ALA ALA LYS PHE GLU ARG GLN HIS MET SEQRES 2 A 124 ASP SER SER THR SER ALA ALA SER SER SER ASN TYR CYS SEQRES 3 A 124 ASN GLN MET MET LYS SER ARG ASN LEU THR LYS ASP ARG SEQRES 4 A 124 CYS LYS PRO VAL ASN THR PHE VAL HIS GLU SER LEU ALA SEQRES 5 A 124 ASP VAL GLN ALA VAL CYS SER GLN LYS ASN VAL ALA CYS SEQRES 6 A 124 LYS ASN GLY GLN THR ASN CYS TYR GLN SER TYR SER THR SEQRES 7 A 124 MET SER ILE THR ASP CYS ARG GLU THR GLY SER SER LYS SEQRES 8 A 124 TYR PRO ASN CYS ALA TYR LYS THR THR GLN ALA ASN LYS SEQRES 9 A 124 HIS ILE ILE VAL ALA CYS GLU GLY ASN PRO TYR VAL PRO SEQRES 10 A 124 VAL HIS PHE ASP ALA SER VAL

HET SO4 A 155 5

HETNAM SO4 SULFATE ION

FORMUL 2 SO4 O4 S 2- FORMUL 3 HOH *107(H2 O)

HELIX 1 H1 THR A 3 MET A 13 1 11 HELIX 2 H2 ASN A 24 ASN A 34 1 11 HELIX 3 H3 SER A 50 GLN A 60 1 11

SHEET 1 S1 3 PRO A 42 HIS A 48 0 SHEET 2 S1 3 ASN A 71 TYR A 92 -1 N THR A 82 O PHE A 46 SHEET 3 S1 3 ASN A 94 CYS A 110 -1 N ALA A 102 O ILE A 81

SSBOND 1 CYS A 26 CYS A 84 1555 1555 2.06 SSBOND 2 CYS A 40 CYS A 95 1555 1555 2.09 SSBOND 3 CYS A 58 CYS A 110 1555 1555 2.02 SSBOND 4 CYS A 65 CYS A 72 1555 1555 2.07

CISPEP 1 TYR A 92 PRO A 93 0 5.70 CISPEP 2 ASN A 113 PRO A 114 0 4.19

SITE 1 CAT 5 HIS A 12 LYS A 41 THR A 45 HIS A 119 SITE 2 CAT 5 PHE A 120 SITE 1 AC1 7 GLN A 11 HIS A 12 HIS A 119 PHE A 120 SITE 2 AC1 7 HOH A 202 HOH A 209 HOH A 282

CRYST1 30.450 38.369 53.215 90.00 105.96 90.00 P 1 21 1 2

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 0.032841 0.000000 0.009392 0.00000

SCALE2 0.000000 0.026063 0.000000 0.00000

SCALE3 0.000000 0.000000 0.019545 0.00000