HEADER OXIDOREDUCTASE 07-FEB-02 1KZM TITLE DISTAL HEME POCKET MUTANT (R38S/H42E) OF RECOMBINANT HORSERADISH TITLE 2 PEROXIDASE C (HRP C). COMPND MOL_ID: 1; COMPND 2 MOLECULE: PEROXIDASE C1A; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: HORSERADISH PEROXIDASE C1A (HRP C); COMPND 5 EC: 1.11.1.7; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ARMORACIA RUSTICANA; SOURCE 3 ORGANISM_TAXID: 3704; SOURCE 4 GENE: PRXC1A OR HPRC1; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS PEROXIDASE, OXIDOREDUCTASE, HORSERADISH, HEME ENZYME, MUTANT EXPDTA X-RAY DIFFRACTION AUTHOR K.MENO,A.HENRIKSEN,A.T.SMITH,M.GAJHEDE REVDAT 7 16-AUG-23 1KZM 1 REMARK REVDAT 6 27-OCT-21 1KZM 1 REMARK SEQADV LINK REVDAT 5 04-APR-18 1KZM 1 REMARK REVDAT 4 11-OCT-17 1KZM 1 REMARK REVDAT 3 13-JUL-11 1KZM 1 VERSN REVDAT 2 24-FEB-09 1KZM 1 VERSN REVDAT 1 09-OCT-02 1KZM 0 JRNL AUTH K.MENO,S.JENNINGS,A.T.SMITH,A.HENRIKSEN,M.GAJHEDE JRNL TITL STRUCTURAL ANALYSIS OF THE TWO HORSERADISH PEROXIDASE JRNL TITL 2 CATALYTIC RESIDUE VARIANTS H42E AND R38S/H42E: IMPLICATIONS JRNL TITL 3 FOR THE CATALYTIC CYCLE. JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 58 1803 2002 JRNL REFN ISSN 0907-4449 JRNL PMID 12351824 JRNL DOI 10.1107/S090744490201329X REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.GAJHEDE,D.J.SCHULLER,A.HENRIKSEN,A.T.SMITH,T.L.POULOS REMARK 1 TITL CRYSTAL STRUCTURE OF HORSERADISH PEROXIDASE C AT 2.15 A REMARK 1 TITL 2 RESOLUTION. REMARK 1 REF NAT.STRUCT.BIOL. V. 12 1032 1997 REMARK 1 REFN ISSN 1072-8368 REMARK 1 REFERENCE 2 REMARK 1 AUTH A.HENRIKSEN,D.J.SCHULLER,K.MENO,K.G.WELINDER,A.T.SMITH, REMARK 1 AUTH 2 M.GAJHEDE REMARK 1 TITL STRUCTURAL INTERACTIONS BETWEEN HORSERADISH PEROXIDASE C AND REMARK 1 TITL 2 THE SUBSTRATE BENZHYDROXAMIC ACID DETERMINED BY X-RAY REMARK 1 TITL 3 CRYSTALLOGRAPHY. REMARK 1 REF BIOCHEMISTRY V. 37 8054 1998 REMARK 1 REFN ISSN 0006-2960 REMARK 1 DOI 10.1021/BI980234J REMARK 1 REFERENCE 3 REMARK 1 AUTH A.HENRIKSEN,A.T.SMITH,M.GAJHEDE REMARK 1 TITL THE STRUCTURES OF THE HORSERADISH PEROXIDASE C-FERULIC ACID REMARK 1 TITL 2 COMPLEX AND THE TERNARY COMPLEX WITH CYANIDE SUGGEST HOW REMARK 1 TITL 3 PEROXIDASES OXIDIZE SMALL PHENOLIC SUBSTRATES. REMARK 1 REF J.BIOL.CHEM. V. 274 35005 1999 REMARK 1 REFN ISSN 0021-9258 REMARK 1 DOI 10.1074/JBC.274.49.35005 REMARK 2 REMARK 2 RESOLUTION. 2.00 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) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 357352.240 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 92.5 REMARK 3 NUMBER OF REFLECTIONS : 20468 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) : 0.168 REMARK 3 FREE R VALUE : 0.203 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.800 REMARK 3 FREE R VALUE TEST SET COUNT : 990 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.006 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 19 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.04 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 88.30 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 956 REMARK 3 BIN R VALUE (WORKING SET) : 0.1840 REMARK 3 BIN FREE R VALUE : 0.2300 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 50 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.033 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2363 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 50 REMARK 3 SOLVENT ATOMS : 295 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 8.70 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 16.80 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.01000 REMARK 3 B22 (A**2) : 2.47000 REMARK 3 B33 (A**2) : -2.48000 REMARK 3 B12 (A**2) : 0.00000 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) : 0.18 REMARK 3 ESD FROM SIGMAA (A) : 0.10 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) : 0.23 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.13 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 BOND ANGLES (DEGREES) : 1.200 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.00 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.140 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) : 1.170 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.680 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.990 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.760 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.38 REMARK 3 BSOL : 55.92 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : MY_PARAM_CNS_KM.HEME REMARK 3 PARAMETER FILE 4 : MY_ION_KM_V11_CAC.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : MY_TOPH_CNS_AH.HEME REMARK 3 TOPOLOGY FILE 4 : MY_ION_KM_V11_CAC.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: PDB ENTRY 6ATJ WITHOUT WATER WAS USED REMARK 3 AS A STARTING MODEL. REMARK 4 REMARK 4 1KZM COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 12 REMARK 12 THE NORMAL S-S BRIDGE BETWEEN CYS97 AND CYS301 HAS BEEN BROKEN REMARK 12 AS A RESULT OF RADIATION DAMAGE. REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 08-FEB-02. REMARK 100 THE DEPOSITION ID IS D_1000015509. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 08-DEC-99 REMARK 200 TEMPERATURE (KELVIN) : 120 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ESRF REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.934 REMARK 200 MONOCHROMATOR : STANDARD REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 21058 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.1 REMARK 200 DATA REDUNDANCY : 5.800 REMARK 200 R MERGE (I) : 0.05900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.03 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.8 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.18500 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: PDB ENTRY 6ATJ WITHOUT WATER WAS USED AS A STARTING REMARK 200 MODEL REMARK 200 STARTING MODEL: PDB ENTRY 6ATJ REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.16 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.33 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG-8000, CALCIUM ACETATE, CACODYLATE, REMARK 280 PH 6.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 283K 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 20.20000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 58.55000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 33.35000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 58.55000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 20.20000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 33.35000 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 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 ASN A 307 REMARK 465 SER A 308 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 CYS A 11 66.19 -157.24 REMARK 500 SER A 73 -65.43 -139.24 REMARK 500 ASN A 186 83.99 -154.10 REMARK 500 THR A 288 61.76 27.83 REMARK 500 REMARK 500 REMARK: NULL 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 CA A 501 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 43 O REMARK 620 2 ASP A 43 OD1 77.1 REMARK 620 3 VAL A 46 O 85.1 162.1 REMARK 620 4 GLY A 48 O 69.3 88.5 83.1 REMARK 620 5 ASP A 50 OD1 140.8 82.5 110.7 77.1 REMARK 620 6 SER A 52 OG 140.5 101.2 93.9 149.9 76.1 REMARK 620 7 HOH A1031 O 71.6 87.1 89.5 140.6 140.6 68.9 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEM A 350 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 170 NE2 REMARK 620 2 HEM A 350 NA 98.7 REMARK 620 3 HEM A 350 NB 92.9 89.4 REMARK 620 4 HEM A 350 NC 96.3 165.0 90.0 REMARK 620 5 HEM A 350 ND 96.3 89.0 170.8 89.2 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 502 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 171 OG1 REMARK 620 2 THR A 171 O 74.2 REMARK 620 3 ASP A 222 OD2 95.1 88.4 REMARK 620 4 THR A 225 O 154.9 80.8 86.8 REMARK 620 5 THR A 225 OG1 136.4 148.6 82.7 68.7 REMARK 620 6 ILE A 228 O 87.2 88.6 175.6 89.5 98.2 REMARK 620 7 ASP A 230 OD1 66.0 139.6 101.5 138.2 71.8 82.9 REMARK 620 N 1 2 3 4 5 6 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 502 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CAC A 510 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 350 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1ATJ RELATED DB: PDB REMARK 900 WILD TYPE CRYSTALLISED IN SPACE GROUP P3112 REMARK 900 RELATED ID: 6ATJ RELATED DB: PDB REMARK 900 WILD TYPE CRYSTALLISED IN SPACE GROUP P212121 IN COMPLEX WITH REMARK 900 FERULIC ACID REMARK 900 RELATED ID: 4ATJ RELATED DB: PDB REMARK 900 ACTIVE SITE MUTANT (H42E) CRYSTALLISED IN SPACE GROUP P21 IN REMARK 900 COMPLEX WITH BENZHYDROXAMIC ACID REMARK 900 RELATED ID: 3ATJ RELATED DB: PDB REMARK 900 HEME LIGAND MUTANT (F221M) CRYSTALLISED IN SPACE GROUP P21 IN REMARK 900 COMPLEX WITH BENZHYDROXAMIC ACID DBREF 1KZM A 1 308 UNP P00433 PER1A_ARMRU 31 338 SEQADV 1KZM SER A 38 UNP P00433 ARG 68 ENGINEERED MUTATION SEQADV 1KZM GLU A 42 UNP P00433 HIS 72 ENGINEERED MUTATION SEQRES 1 A 308 GLN LEU THR PRO THR PHE TYR ASP ASN SER CYS PRO ASN SEQRES 2 A 308 VAL SER ASN ILE VAL ARG ASP THR ILE VAL ASN GLU LEU SEQRES 3 A 308 ARG SER ASP PRO ARG ILE ALA ALA SER ILE LEU SER LEU SEQRES 4 A 308 HIS PHE GLU ASP CYS PHE VAL ASN GLY CYS ASP ALA SER SEQRES 5 A 308 ILE LEU LEU ASP ASN THR THR SER PHE ARG THR GLU LYS SEQRES 6 A 308 ASP ALA PHE GLY ASN ALA ASN SER ALA ARG GLY PHE PRO SEQRES 7 A 308 VAL ILE ASP ARG MET LYS ALA ALA VAL GLU SER ALA CYS SEQRES 8 A 308 PRO ARG THR VAL SER CYS ALA ASP LEU LEU THR ILE ALA SEQRES 9 A 308 ALA GLN GLN SER VAL THR LEU ALA GLY GLY PRO SER TRP SEQRES 10 A 308 ARG VAL PRO LEU GLY ARG ARG ASP SER LEU GLN ALA PHE SEQRES 11 A 308 LEU ASP LEU ALA ASN ALA ASN LEU PRO ALA PRO PHE PHE SEQRES 12 A 308 THR LEU PRO GLN LEU LYS ASP SER PHE ARG ASN VAL GLY SEQRES 13 A 308 LEU ASN ARG SER SER ASP LEU VAL ALA LEU SER GLY GLY SEQRES 14 A 308 HIS THR PHE GLY LYS ASN GLN CYS ARG PHE ILE MET ASP SEQRES 15 A 308 ARG LEU TYR ASN PHE SER ASN THR GLY LEU PRO ASP PRO SEQRES 16 A 308 THR LEU ASN THR THR TYR LEU GLN THR LEU ARG GLY LEU SEQRES 17 A 308 CYS PRO LEU ASN GLY ASN LEU SER ALA LEU VAL ASP PHE SEQRES 18 A 308 ASP LEU ARG THR PRO THR ILE PHE ASP ASN LYS TYR TYR SEQRES 19 A 308 VAL ASN LEU GLU GLU GLN LYS GLY LEU ILE GLN SER ASP SEQRES 20 A 308 GLN GLU LEU PHE SER SER PRO ASN ALA THR ASP THR ILE SEQRES 21 A 308 PRO LEU VAL ARG SER PHE ALA ASN SER THR GLN THR PHE SEQRES 22 A 308 PHE ASN ALA PHE VAL GLU ALA MET ASP ARG MET GLY ASN SEQRES 23 A 308 ILE THR PRO LEU THR GLY THR GLN GLY GLN ILE ARG LEU SEQRES 24 A 308 ASN CYS ARG VAL VAL ASN SER ASN SER HET CA A 501 1 HET CA A 502 1 HET CAC A 510 5 HET HEM A 350 43 HETNAM CA CALCIUM ION HETNAM CAC CACODYLATE ION HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN CAC DIMETHYLARSINATE HETSYN HEM HEME FORMUL 2 CA 2(CA 2+) FORMUL 4 CAC C2 H6 AS O2 1- FORMUL 5 HEM C34 H32 FE N4 O4 FORMUL 6 HOH *295(H2 O) HELIX 1 1 ASN A 13 ARG A 27 1 15 HELIX 2 2 ARG A 31 PHE A 45 1 15 HELIX 3 3 ALA A 51 LEU A 55 5 5 HELIX 4 4 THR A 63 ALA A 67 5 5 HELIX 5 5 GLY A 76 CYS A 91 1 16 HELIX 6 6 SER A 96 ALA A 112 1 17 HELIX 7 7 PHE A 130 LEU A 138 1 9 HELIX 8 8 THR A 144 VAL A 155 1 12 HELIX 9 9 ARG A 159 SER A 167 1 9 HELIX 10 10 GLY A 168 PHE A 172 5 5 HELIX 11 11 ILE A 180 ASN A 186 1 7 HELIX 12 12 PHE A 187 THR A 190 5 4 HELIX 13 13 ASN A 198 CYS A 209 1 12 HELIX 14 14 ASN A 231 GLU A 239 1 9 HELIX 15 15 ILE A 244 SER A 253 1 10 HELIX 16 16 THR A 259 SER A 269 1 11 HELIX 17 17 SER A 269 GLY A 285 1 17 SHEET 1 A 2 LYS A 174 GLN A 176 0 SHEET 2 A 2 LEU A 218 ASP A 220 -1 O VAL A 219 N ASN A 175 SSBOND 1 CYS A 11 CYS A 91 1555 1555 2.04 SSBOND 2 CYS A 44 CYS A 49 1555 1555 2.04 SSBOND 3 CYS A 97 CYS A 301 1555 1555 2.91 SSBOND 4 CYS A 177 CYS A 209 1555 1555 2.03 LINK O ASP A 43 CA CA A 501 1555 1555 2.37 LINK OD1 ASP A 43 CA CA A 501 1555 1555 2.39 LINK O VAL A 46 CA CA A 501 1555 1555 2.29 LINK O GLY A 48 CA CA A 501 1555 1555 2.50 LINK OD1 ASP A 50 CA CA A 501 1555 1555 2.34 LINK OG SER A 52 CA CA A 501 1555 1555 2.43 LINK NE2 HIS A 170 FE HEM A 350 1555 1555 2.22 LINK OG1 THR A 171 CA CA A 502 1555 1555 2.51 LINK O THR A 171 CA CA A 502 1555 1555 2.27 LINK OD2 ASP A 222 CA CA A 502 1555 1555 2.30 LINK O THR A 225 CA CA A 502 1555 1555 2.40 LINK OG1 THR A 225 CA CA A 502 1555 1555 2.44 LINK O ILE A 228 CA CA A 502 1555 1555 2.35 LINK OD1 ASP A 230 CA CA A 502 1555 1555 2.41 LINK CA CA A 501 O HOH A1031 1555 1555 2.48 SITE 1 AC1 6 ASP A 43 VAL A 46 GLY A 48 ASP A 50 SITE 2 AC1 6 SER A 52 HOH A1031 SITE 1 AC2 5 THR A 171 ASP A 222 THR A 225 ILE A 228 SITE 2 AC2 5 ASP A 230 SITE 1 AC3 8 THR A 59 GLY A 156 ARG A 283 ASN A 286 SITE 2 AC3 8 HOH A1033 HOH A1115 HOH A2018 HOH A2045 SITE 1 AC4 21 ARG A 31 ALA A 34 SER A 35 PHE A 41 SITE 2 AC4 21 SER A 73 PRO A 139 ALA A 140 PRO A 141 SITE 3 AC4 21 PHE A 152 LEU A 166 HIS A 170 PHE A 172 SITE 4 AC4 21 GLY A 173 LYS A 174 ASN A 175 GLN A 176 SITE 5 AC4 21 PHE A 179 PHE A 221 SER A 246 HOH A2035 SITE 6 AC4 21 HOH A3019 CRYST1 40.400 66.700 117.100 90.00 90.00 90.00 P 21 21 21 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 0.024745 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014989 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008536 0.00000