1PFR - Header Asymmetric Unit

HEADER REDUCTASE 03-DEC-96 1PFR

TITLE RIBONUCLEOSIDE-DIPHOSPHATE REDUCTASE 1 BETA CHAIN

COMPND MOL_ID: 1; COMPND 2 MOLECULE: PROTEIN R2 OF RIBONUCLEOTIDE REDUCTASE; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: RNR R2; COMPND 5 EC: 1.17.4.1; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES; COMPND 8 OTHER_DETAILS: DIFERROUS FORM OF NON-HEME DINUCLEAR IRON COMPND 9 SITE

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: MC1009; SOURCE 7 EXPRESSION_SYSTEM_PLASMID: PGP1-2/PTB2

KEYWDS REDUCTASE, OXIDOREDUCTASE, DNA REPLICATION, IRON, ACTING ON KEYWDS 2 RIBOSE 2'-OH

EXPDTA X-RAY DIFFRACTION

AUTHOR D.T.LOGAN,X.D.SU,A.ABERG,K.REGNSTROM,J.HAJDU,H.EKLUND, AUTHOR 2 P.NORDLUND

REVDAT 2 24-FEB-09 1PFR 1 VERSN REVDAT 1 12-MAR-97 1PFR 0

JRNL AUTH D.T.LOGAN,X.D.SU,A.ABERG,K.REGNSTROM,J.HAJDU, JRNL AUTH 2 H.EKLUND,P.NORDLUND JRNL TITL CRYSTAL STRUCTURE OF REDUCED PROTEIN R2 OF JRNL TITL 2 RIBONUCLEOTIDE REDUCTASE: THE STRUCTURAL BASIS FOR JRNL TITL 3 OXYGEN ACTIVATION AT A DINUCLEAR IRON SITE. JRNL REF STRUCTURE V. 4 1053 1996 JRNL REFN ISSN 0969-2126 JRNL PMID 8805591 JRNL DOI 10.1016/S0969-2126(96)00112-8

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH P.NORDLUND,H.EKLUND REMARK 1 TITL STRUCTURE AND FUNCTION OF THE ESCHERICHIA COLI REMARK 1 TITL 2 RIBONUCLEOTIDE REDUCTASE PROTEIN R2 REMARK 1 REF J.MOL.BIOL. V. 232 123 1993 REMARK 1 REFN ISSN 0022-2836

REMARK 2 REMARK 2 RESOLUTION. 2.20 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : TNT V. 5-E REMARK 3 AUTHORS : TRONRUD,TEN EYCK,MATTHEWS REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.20 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 15.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 89.0 REMARK 3 NUMBER OF REFLECTIONS : 34219 REMARK 3 REMARK 3 USING DATA ABOVE SIGMA CUTOFF. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.179 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 USING ALL DATA, NO SIGMA CUTOFF. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.1790 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 : 5576 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 12 REMARK 3 SOLVENT ATOMS : 219 REMARK 3 REMARK 3 WILSON B VALUE (FROM FCALC, A**2) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. RMS WEIGHT COUNT REMARK 3 BOND LENGTHS (A) : 0.011 ; 2.200 ; 5704 REMARK 3 BOND ANGLES (DEGREES) : 1.958 ; 1.200 ; 7714 REMARK 3 TORSION ANGLES (DEGREES) : 17.252; 0.000 ; 3362 REMARK 3 PSEUDOROTATION ANGLES (DEGREES) : NULL ; NULL ; NULL REMARK 3 TRIGONAL CARBON PLANES (A) : 0.009 ; 5.000 ; 168 REMARK 3 GENERAL PLANES (A) : 0.011 ; 10.000; 804 REMARK 3 ISOTROPIC THERMAL FACTORS (A**2) : 1.250 ; 40.000; 5696 REMARK 3 NON-BONDED CONTACTS (A) : 0.015 ; 60.000; 36 REMARK 3 REMARK 3 INCORRECT CHIRAL-CENTERS (COUNT) : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : BABINET SCALING REMARK 3 KSOL : 0.51 REMARK 3 BSOL : 149.60 REMARK 3 REMARK 3 RESTRAINT LIBRARIES. REMARK 3 STEREOCHEMISTRY : TNT PROTGEO REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS : TNT BCORREL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE STRUCTURE WAS REFINED FURTHER TO REMARK 3 THAT DESCRIBED IN REFERENCE 1 USING TNT.

REMARK 4 REMARK 4 1PFR 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 : JUN-92 REMARK 200 TEMPERATURE (KELVIN) : 300 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SRS REMARK 200 BEAMLINE : PX9.5 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 95516 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 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 (%) : 86.0 REMARK 200 DATA REDUNDANCY : 2.790 REMARK 200 R MERGE (I) : 0.09500 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 7.1000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.20 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.26 REMARK 200 COMPLETENESS FOR SHELL (%) : 34.1 REMARK 200 DATA REDUNDANCY IN SHELL : 3.40 REMARK 200 R MERGE FOR SHELL (I) : 0.37600 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.800 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: DIFERRIC FORM OF R2 PROTEIN, PDB ENTRY 1RIB REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 34.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.10 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: HANGING DROP VAPOR DIFFUSION. REMARK 280 CRYSTALLISED FROM 20% PEG 4000, 0.2M NACL, 0.1M MES PH 6.0, REMARK 280 1MM ETHYLMERCURY SALICYLATE., VAPOR DIFFUSION - HANGING DROP

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 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 37.15000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 57.85000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 42.75000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 57.85000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 37.15000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 42.75000 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 7380 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 24280 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -259.0 KCAL/MOL 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 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 MET A 296 CG MET A 296 SD -0.309 REMARK 500 ILE A 297 C ILE A 297 O 0.151 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 ASP A 58 CB - CG - OD1 ANGL. DEV. = 7.1 DEGREES REMARK 500 LEU A 299 CA - CB - CG ANGL. DEV. = 14.2 DEGREES REMARK 500 LEU A 304 CB - CG - CD1 ANGL. DEV. = -10.9 DEGREES REMARK 500 VAL A 319 CG1 - CB - CG2 ANGL. DEV. = 12.7 DEGREES REMARK 500 VAL B 23 CB - CA - C ANGL. DEV. = -11.7 DEGREES REMARK 500 ARG B 207 NE - CZ - NH1 ANGL. DEV. = -3.6 DEGREES REMARK 500 ARG B 232 NE - CZ - NH2 ANGL. DEV. = -3.2 DEGREES REMARK 500 ARG B 236 NE - CZ - NH2 ANGL. DEV. = -3.7 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 PHE A 5 80.35 -159.77 REMARK 500 ASN A 24 -78.79 -108.74 REMARK 500 ASP A 132 92.18 -160.37 REMARK 500 ASN A 143 102.77 -47.36 REMARK 500 ALA A 150 27.09 -143.51 REMARK 500 ASP A 257 -124.68 -97.72 REMARK 500 TYR A 289 -34.31 -38.64 REMARK 500 PHE A 291 58.91 -94.27 REMARK 500 ARG A 292 -79.69 -106.56 REMARK 500 ASP A 293 40.59 -84.77 REMARK 500 SER A 295 -154.60 -179.73 REMARK 500 PHE B 5 93.78 -166.84 REMARK 500 ASN B 24 -80.91 -90.12 REMARK 500 PHE B 47 131.70 -40.00 REMARK 500 GLN B 147 -49.10 -27.29 REMARK 500 PHE B 291 34.31 -96.25 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 689 DISTANCE = 5.33 ANGSTROMS REMARK 525 HOH B 714 DISTANCE = 5.01 ANGSTROMS REMARK 525 HOH A 714 DISTANCE = 5.55 ANGSTROMS

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 FE A 501 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 84 OD1 REMARK 620 2 GLU A 115 OE1 106.8 REMARK 620 3 HIS A 118 ND1 130.7 88.7 REMARK 620 4 GLU A 238 OE2 117.3 105.7 101.8 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FE A 502 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 115 OE2 REMARK 620 2 GLU A 204 OE1 136.5 REMARK 620 3 GLU A 204 OE2 89.1 51.5 REMARK 620 4 GLU A 238 OE1 130.8 87.2 138.6 REMARK 620 5 HIS A 241 ND1 97.4 108.0 103.0 84.6 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FE B 503 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP B 84 OD2 REMARK 620 2 GLU B 115 OE1 115.9 REMARK 620 3 HIS B 118 ND1 97.7 91.5 REMARK 620 4 GLU B 238 OE2 145.4 94.3 97.9 REMARK 620 5 ASP B 84 OD1 54.0 81.3 141.5 120.2 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 FE B 504 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU B 115 OE2 REMARK 620 2 GLU B 204 OE2 85.7 REMARK 620 3 GLU B 238 OE1 174.8 91.1 REMARK 620 4 HIS B 241 ND1 92.1 88.1 91.9 REMARK 620 5 HOH B 663 O 83.2 94.1 93.0 174.6 REMARK 620 6 GLU B 238 OE2 118.7 152.5 63.5 102.3 77.8 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG A 601 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 196 SG REMARK 620 2 CYS A 196 O 79.7 REMARK 620 3 HOH A 612 O 175.6 96.2 REMARK 620 4 HG A 603 HG 41.8 68.6 137.9 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG A 602 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 TYR A 194 OH REMARK 620 2 HOH A 667 O 84.4 REMARK 620 3 CYS A 272 SG 97.3 177.5 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG A 603 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 196 O REMARK 620 2 CYS A 196 SG 72.3 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG A 604 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 268 SG REMARK 620 2 HOH A 695 O 137.2 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG B 605 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HG B 606 HG REMARK 620 2 CYS B 196 O 67.5 REMARK 620 3 HOH B 617 O 152.6 113.6 REMARK 620 4 CYS B 196 SG 37.5 76.2 167.2 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG B 606 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 196 O REMARK 620 2 CYS B 196 SG 74.2 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG B 607 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 268 O REMARK 620 2 CYS B 272 SG 96.3 REMARK 620 3 CYS B 268 SG 93.1 164.7 REMARK 620 N 1 2 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HG B 608 HG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS B 214 O REMARK 620 2 MET B 296 SD 86.5 REMARK 620 3 CYS B 214 SG 106.5 139.8 REMARK 620 N 1 2

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: FE1 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: DIFERROUS IRON CENTER IN SUBUNIT A. REMARK 800 SITE_IDENTIFIER: FE2 REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: DIFERROUS IRON CENTER IN SUBUNIT B. REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE A 501 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE A 502 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 601 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 602 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 603 REMARK 800 SITE_IDENTIFIER: AC6 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG A 604 REMARK 800 SITE_IDENTIFIER: AC7 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE B 503 REMARK 800 SITE_IDENTIFIER: AC8 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE FE B 504 REMARK 800 SITE_IDENTIFIER: AC9 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 605 REMARK 800 SITE_IDENTIFIER: BC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 606 REMARK 800 SITE_IDENTIFIER: BC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 607 REMARK 800 SITE_IDENTIFIER: BC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HG B 608

DBREF 1PFR A 1 340 UNP P69924 RIR2_ECOLI 1 340 DBREF 1PFR B 1 340 UNP P69924 RIR2_ECOLI 1 340

SEQADV 1PFR ALA A 211 UNP P69924 SER 211 ENGINEERED SEQADV 1PFR ALA B 211 UNP P69924 SER 211 ENGINEERED

SEQRES 1 A 340 ALA TYR THR THR PHE SER GLN THR LYS ASN ASP GLN LEU SEQRES 2 A 340 LYS GLU PRO MET PHE PHE GLY GLN PRO VAL ASN VAL ALA SEQRES 3 A 340 ARG TYR ASP GLN GLN LYS TYR ASP ILE PHE GLU LYS LEU SEQRES 4 A 340 ILE GLU LYS GLN LEU SER PHE PHE TRP ARG PRO GLU GLU SEQRES 5 A 340 VAL ASP VAL SER ARG ASP ARG ILE ASP TYR GLN ALA LEU SEQRES 6 A 340 PRO GLU HIS GLU LYS HIS ILE PHE ILE SER ASN LEU LYS SEQRES 7 A 340 TYR GLN THR LEU LEU ASP SER ILE GLN GLY ARG SER PRO SEQRES 8 A 340 ASN VAL ALA LEU LEU PRO LEU ILE SER ILE PRO GLU LEU SEQRES 9 A 340 GLU THR TRP VAL GLU THR TRP ALA PHE SER GLU THR ILE SEQRES 10 A 340 HIS SER ARG SER TYR THR HIS ILE ILE ARG ASN ILE VAL SEQRES 11 A 340 ASN ASP PRO SER VAL VAL PHE ASP ASP ILE VAL THR ASN SEQRES 12 A 340 GLU GLN ILE GLN LYS ARG ALA GLU GLY ILE SER SER TYR SEQRES 13 A 340 TYR ASP GLU LEU ILE GLU MET THR SER TYR TRP HIS LEU SEQRES 14 A 340 LEU GLY GLU GLY THR HIS THR VAL ASN GLY LYS THR VAL SEQRES 15 A 340 THR VAL SER LEU ARG GLU LEU LYS LYS LYS LEU TYR LEU SEQRES 16 A 340 CYS LEU MET SER VAL ASN ALA LEU GLU ALA ILE ARG PHE SEQRES 17 A 340 TYR VAL ALA PHE ALA CYS SER PHE ALA PHE ALA GLU ARG SEQRES 18 A 340 GLU LEU MET GLU GLY ASN ALA LYS ILE ILE ARG LEU ILE SEQRES 19 A 340 ALA ARG ASP GLU ALA LEU HIS LEU THR GLY THR GLN HIS SEQRES 20 A 340 MET LEU ASN LEU LEU ARG SER GLY ALA ASP ASP PRO GLU SEQRES 21 A 340 MET ALA GLU ILE ALA GLU GLU CYS LYS GLN GLU CYS TYR SEQRES 22 A 340 ASP LEU PHE VAL GLN ALA ALA GLN GLN GLU LYS ASP TRP SEQRES 23 A 340 ALA ASP TYR LEU PHE ARG ASP GLY SER MET ILE GLY LEU SEQRES 24 A 340 ASN LYS ASP ILE LEU CYS GLN TYR VAL GLU TYR ILE THR SEQRES 25 A 340 ASN ILE ARG MET GLN ALA VAL GLY LEU ASP LEU PRO PHE SEQRES 26 A 340 GLN THR ARG SER ASN PRO ILE PRO TRP ILE ASN THR TRP SEQRES 27 A 340 LEU VAL SEQRES 1 B 340 ALA TYR THR THR PHE SER GLN THR LYS ASN ASP GLN LEU SEQRES 2 B 340 LYS GLU PRO MET PHE PHE GLY GLN PRO VAL ASN VAL ALA SEQRES 3 B 340 ARG TYR ASP GLN GLN LYS TYR ASP ILE PHE GLU LYS LEU SEQRES 4 B 340 ILE GLU LYS GLN LEU SER PHE PHE TRP ARG PRO GLU GLU SEQRES 5 B 340 VAL ASP VAL SER ARG ASP ARG ILE ASP TYR GLN ALA LEU SEQRES 6 B 340 PRO GLU HIS GLU LYS HIS ILE PHE ILE SER ASN LEU LYS SEQRES 7 B 340 TYR GLN THR LEU LEU ASP SER ILE GLN GLY ARG SER PRO SEQRES 8 B 340 ASN VAL ALA LEU LEU PRO LEU ILE SER ILE PRO GLU LEU SEQRES 9 B 340 GLU THR TRP VAL GLU THR TRP ALA PHE SER GLU THR ILE SEQRES 10 B 340 HIS SER ARG SER TYR THR HIS ILE ILE ARG ASN ILE VAL SEQRES 11 B 340 ASN ASP PRO SER VAL VAL PHE ASP ASP ILE VAL THR ASN SEQRES 12 B 340 GLU GLN ILE GLN LYS ARG ALA GLU GLY ILE SER SER TYR SEQRES 13 B 340 TYR ASP GLU LEU ILE GLU MET THR SER TYR TRP HIS LEU SEQRES 14 B 340 LEU GLY GLU GLY THR HIS THR VAL ASN GLY LYS THR VAL SEQRES 15 B 340 THR VAL SER LEU ARG GLU LEU LYS LYS LYS LEU TYR LEU SEQRES 16 B 340 CYS LEU MET SER VAL ASN ALA LEU GLU ALA ILE ARG PHE SEQRES 17 B 340 TYR VAL ALA PHE ALA CYS SER PHE ALA PHE ALA GLU ARG SEQRES 18 B 340 GLU LEU MET GLU GLY ASN ALA LYS ILE ILE ARG LEU ILE SEQRES 19 B 340 ALA ARG ASP GLU ALA LEU HIS LEU THR GLY THR GLN HIS SEQRES 20 B 340 MET LEU ASN LEU LEU ARG SER GLY ALA ASP ASP PRO GLU SEQRES 21 B 340 MET ALA GLU ILE ALA GLU GLU CYS LYS GLN GLU CYS TYR SEQRES 22 B 340 ASP LEU PHE VAL GLN ALA ALA GLN GLN GLU LYS ASP TRP SEQRES 23 B 340 ALA ASP TYR LEU PHE ARG ASP GLY SER MET ILE GLY LEU SEQRES 24 B 340 ASN LYS ASP ILE LEU CYS GLN TYR VAL GLU TYR ILE THR SEQRES 25 B 340 ASN ILE ARG MET GLN ALA VAL GLY LEU ASP LEU PRO PHE SEQRES 26 B 340 GLN THR ARG SER ASN PRO ILE PRO TRP ILE ASN THR TRP SEQRES 27 B 340 LEU VAL

HET FE A 501 1 HET FE A 502 1 HET HG A 601 1 HET HG A 602 1 HET HG A 603 1 HET HG A 604 1 HET FE B 503 1 HET FE B 504 1 HET HG B 605 1 HET HG B 606 1 HET HG B 607 1 HET HG B 608 1

HETNAM FE FE (III) ION HETNAM HG MERCURY (II) ION

FORMUL 3 FE 4(FE 3+) FORMUL 5 HG 8(HG 2+) FORMUL 15 HOH *219(H2 O)

HELIX 1 1 GLN A 12 LYS A 14 5 3 HELIX 2 2 ASP A 34 SER A 45 1 12 HELIX 3 3 PRO A 50 GLU A 52 5 3 HELIX 4 4 SER A 56 GLN A 63 1 8 HELIX 5 5 GLU A 67 ALA A 94 1 28 HELIX 6 6 LEU A 96 LEU A 98 5 3 HELIX 7 7 PRO A 102 ILE A 129 1 28 HELIX 8 8 PRO A 133 ASP A 139 5 7 HELIX 9 9 GLU A 144 LYS A 148 1 5 HELIX 10 10 ILE A 153 LEU A 169 1 17 HELIX 11 11 LEU A 186 ILE A 206 1 21 HELIX 12 12 TYR A 209 ARG A 221 1 13 HELIX 13 13 GLU A 225 SER A 254 1 30 HELIX 14 14 PRO A 259 LEU A 290 1 32 HELIX 15 15 LYS A 301 VAL A 319 1 19 HELIX 16 16 PRO A 333 TRP A 338 5 6 HELIX 17 17 ASP B 34 SER B 45 1 12 HELIX 18 18 PRO B 50 GLU B 52 5 3 HELIX 19 19 SER B 56 ALA B 64 5 9 HELIX 20 20 GLU B 67 LEU B 95 1 29 HELIX 21 21 PRO B 102 VAL B 130 1 29 HELIX 22 22 PRO B 133 ASP B 139 1 7 HELIX 23 23 GLU B 144 LEU B 170 1 27 HELIX 24 24 LEU B 186 ALA B 205 1 20 HELIX 25 25 TYR B 209 GLU B 220 1 12 HELIX 26 26 GLU B 225 ARG B 253 1 29 HELIX 27 27 PRO B 259 ARG B 292 1 34 HELIX 28 28 LYS B 301 VAL B 319 1 19 HELIX 29 29 PRO B 333 THR B 337 5 5

SHEET 1 A 2 GLY A 173 VAL A 177 0 SHEET 2 A 2 LYS A 180 VAL A 184 -1 N VAL A 184 O GLY A 173 SHEET 1 B 2 GLY B 173 VAL B 177 0 SHEET 2 B 2 LYS B 180 VAL B 184 -1 N VAL B 184 O GLY B 173

LINK FE FE A 501 OD1 ASP A 84 1555 1555 2.10 LINK FE FE A 501 OE1 GLU A 115 1555 1555 2.19 LINK FE FE A 501 ND1 HIS A 118 1555 1555 2.35 LINK FE FE A 501 OE2 GLU A 238 1555 1555 2.27 LINK FE FE A 502 OE2 GLU A 115 1555 1555 2.16 LINK FE FE A 502 OE1 GLU A 204 1555 1555 2.51 LINK FE FE A 502 OE2 GLU A 204 1555 1555 2.48 LINK FE FE A 502 OE1 GLU A 238 1555 1555 1.90 LINK FE FE A 502 ND1 HIS A 241 1555 1555 2.40 LINK FE FE B 503 OD2 ASP B 84 1555 1555 2.12 LINK FE FE B 503 OE1 GLU B 115 1555 1555 2.13 LINK FE FE B 503 ND1 HIS B 118 1555 1555 2.08 LINK FE FE B 503 OE2 GLU B 238 1555 1555 2.22 LINK FE FE B 504 OE2 GLU B 115 1555 1555 2.23 LINK FE FE B 504 OE2 GLU B 204 1555 1555 2.49 LINK FE FE B 504 OE1 GLU B 238 1555 1555 1.52 LINK HG HG A 601 SG CYS A 196 1555 1555 2.22 LINK HG HG A 601 O CYS A 196 1555 1555 3.10 LINK HG HG A 601 O HOH A 612 1555 1555 2.68 LINK HG HG A 601 HG HG A 603 1555 1555 3.10 LINK HG HG A 602 OH TYR A 194 1555 1555 2.96 LINK HG HG A 602 O HOH A 667 1555 1555 2.32 LINK HG HG A 602 SG CYS A 272 1555 1555 2.53 LINK HG HG A 603 O CYS A 196 1555 1555 3.50 LINK HG HG A 603 SG CYS A 196 1555 1555 2.07 LINK HG HG A 604 SG CYS A 268 1555 1555 2.17 LINK HG HG A 604 O HOH A 695 1555 1555 2.82 LINK FE FE B 503 OD1 ASP B 84 1555 1555 2.58 LINK FE FE B 504 ND1 HIS B 241 1555 1555 2.44 LINK FE FE B 504 O HOH B 663 1555 1555 2.45 LINK FE FE B 504 OE2 GLU B 238 1555 1555 2.44 LINK HG HG B 605 HG HG B 606 1555 1555 3.03 LINK HG HG B 605 O CYS B 196 1555 1555 3.11 LINK HG HG B 605 O HOH B 617 1555 1555 2.35 LINK HG HG B 605 SG CYS B 196 1555 1555 2.33 LINK HG HG B 606 O CYS B 196 1555 1555 3.42 LINK HG HG B 606 SG CYS B 196 1555 1555 1.85 LINK HG HG B 607 O CYS B 268 1555 1555 2.76 LINK HG HG B 607 SG CYS B 272 1555 1555 2.27 LINK HG HG B 607 SG CYS B 268 1555 1555 3.18 LINK HG HG B 608 O CYS B 214 1555 1555 3.34 LINK HG HG B 608 SD MET B 296 1555 1555 3.50 LINK HG HG B 608 SG CYS B 214 1555 1555 2.27

SITE 1 FE1 6 ASP A 84 GLU A 115 HIS A 118 GLU A 204 SITE 2 FE1 6 GLU A 238 HIS A 241 SITE 1 FE2 6 ASP B 84 GLU B 115 HIS B 118 GLU B 204 SITE 2 FE2 6 GLU B 238 HIS B 241 SITE 1 AC1 4 ASP A 84 GLU A 115 HIS A 118 GLU A 238 SITE 1 AC2 4 GLU A 115 GLU A 204 GLU A 238 HIS A 241 SITE 1 AC3 6 TYR A 156 TYR A 157 CYS A 196 VAL A 200 SITE 2 AC3 6 HG A 603 HOH A 612 SITE 1 AC4 5 TYR A 194 MET A 198 ALA A 265 CYS A 272 SITE 2 AC4 5 HOH A 667 SITE 1 AC5 5 TYR A 157 CYS A 196 LEU A 197 VAL A 200 SITE 2 AC5 5 HG A 601 SITE 1 AC6 2 CYS A 268 HOH A 695 SITE 1 AC7 5 ASP B 84 GLU B 115 HIS B 118 GLU B 238 SITE 2 AC7 5 FE B 504 SITE 1 AC8 6 GLU B 115 GLU B 204 GLU B 238 HIS B 241 SITE 2 AC8 6 FE B 503 HOH B 663 SITE 1 AC9 6 TYR B 156 TYR B 157 CYS B 196 VAL B 200 SITE 2 AC9 6 HG B 606 HOH B 617 SITE 1 BC1 4 TYR B 157 CYS B 196 VAL B 200 HG B 605 SITE 1 BC2 3 TYR B 194 CYS B 268 CYS B 272 SITE 1 BC3 3 ILE B 72 CYS B 214 MET B 296

CRYST1 74.300 85.500 115.700 90.00 90.00 90.00 P 21 21 21 8

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 0.013459 0.000000 0.000000 0.00000

SCALE2 0.000000 0.011696 0.000000 0.00000

SCALE3 0.000000 0.000000 0.008643 0.00000

MTRIX1 1 -0.824533 0.547277 0.143640 20.21500 1

MTRIX2 1 0.546319 0.703980 0.453816 -26.72400 1

MTRIX3 1 0.147243 0.452659 -0.879442 76.52800 1