PDB Short entry for 1KRJ HEADER OXIDOREDUCTASE 09-JAN-02 1KRJ TITLE ENGINEERING CALCIUM-BINDING SITE INTO CYTOCHROME C PEROXIDASE (CCP) COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYTOCHROME C PEROXIDASE; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: PROXIMAL CATION-BINDING LOOP; COMPND 5 SYNONYM: CCP; COMPND 6 EC: 1.11.1.5; COMPND 7 ENGINEERED: YES; COMPND 8 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SACCHAROMYCES CEREVISIAE; SOURCE 3 ORGANISM_COMMON: BAKER'S YEAST; SOURCE 4 ORGANISM_TAXID: 4932; SOURCE 5 GENE: OPBYC; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PT7CCP KEYWDS CATION-BINDING LOOP, CALCIUM SELECTIVITY, TRP191 CATIONIC-RADICAL, KEYWDS 2 OPEN/CLOSED CONFORMER, BIDENTATE BOND, PENTAGONAL BIPYRIMIDAL KEYWDS 3 GEOMETRY, LIGNIN PEROXIDASE, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR C.A.BONAGURA,B.BHASKAR,M.SUNDARAMOORTHY,T.L.POULOS REVDAT 4 27-OCT-21 1KRJ 1 REMARK SEQADV LINK REVDAT 3 11-OCT-17 1KRJ 1 REMARK REVDAT 2 24-FEB-09 1KRJ 1 VERSN REVDAT 1 23-JAN-02 1KRJ 0 JRNL AUTH C.A.BONAGURA,B.BHASKAR,M.SUNDARAMOORTHY,T.L.POULOS JRNL TITL CONVERSION OF AN ENGINEERED POTASSIUM-BINDING SITE INTO A JRNL TITL 2 CALCIUM-SELECTIVE SITE IN CYTOCHROME C PEROXIDASE. JRNL REF J.BIOL.CHEM. V. 274 37827 1999 JRNL REFN ISSN 0021-9258 JRNL PMID 10608846 JRNL DOI 10.1074/JBC.274.53.37827 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 100.0 REMARK 3 NUMBER OF REFLECTIONS : 25912 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) : 0.192 REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1645 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.09 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.1921 REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2380 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 44 REMARK 3 SOLVENT ATOMS : 599 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 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : NULL REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : ISOTROPIC 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 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1KRJ COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 10-JAN-02. REMARK 100 THE DEPOSITION ID IS D_1000015267. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 29-OCT-98 REMARK 200 TEMPERATURE (KELVIN) : 110 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU REMARK 200 INTENSITY-INTEGRATION SOFTWARE : R-AXIS REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 28764 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : 10.86 REMARK 200 R MERGE (I) : 0.08200 REMARK 200 R SYM (I) : 0.05700 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 19.2082 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) : 2.02 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.3 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.42000 REMARK 200 R SYM FOR SHELL (I) : 0.35400 REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.302 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: POTASSIUM-BINDING CCP (CCPK2) REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 59.85 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.06 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 2-METHYL-2,4-PENTANEDIOL (MPD), REMARK 280 POTASSIUM PHOSPHATE, PH 6.0, VAPOR DIFFUSION, SITTING DROP, REMARK 280 TEMPERATURE 277K 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 53.51700 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 25.55000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.72900 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 25.55000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 53.51700 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.72900 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 300 REMARK: LARGELY A HELICAL BUNDLE PROTEIN CONTAINING A DISTINCT REMARK 300 DISTAL AND PROXIMAL HEME DOMAINS. PROXIMAL HEME DOMIAN CONTAINS THE REMARK 300 CATION-BINDING LOOP WHICH IN THE PRESENT CASE CONTAINS CALCIUM REMARK 300 COORDINATED BY THE RESIDUES 190-199 OF THE LOOP 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 Largely a helical bundle protein containing REMARK 400 a distinct distal and proximal heme domains. REMARK 400 Proximal heme domain contains the cation-binding REMARK 400 loop which in the present case contains Calcium REMARK 400 coordinated by the residues 190-199 of the loop. 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 LYS A 12 115.20 -33.33 REMARK 500 ASP A 33 50.14 -91.69 REMARK 500 ASP A 148 34.83 -96.53 REMARK 500 HIS A 175 4.42 -67.69 REMARK 500 THR A 194 76.90 -113.65 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 HEM A 296 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 175 NE2 REMARK 620 2 HEM A 296 NA 94.8 REMARK 620 3 HEM A 296 NB 92.1 90.1 REMARK 620 4 HEM A 296 NC 90.9 174.2 88.7 REMARK 620 5 HEM A 296 ND 91.2 90.3 176.6 90.6 REMARK 620 6 HOH A 718 O 171.5 79.0 82.0 95.2 94.8 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K A 500 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 176 O REMARK 620 2 THR A 176 OG1 72.1 REMARK 620 3 ASP A 192 OD1 75.9 108.7 REMARK 620 4 ASP A 192 OD2 87.9 72.3 44.5 REMARK 620 5 THR A 194 OG1 151.0 135.0 83.6 91.7 REMARK 620 6 THR A 194 O 83.3 154.0 71.8 115.7 70.8 REMARK 620 7 VAL A 197 O 92.4 92.5 150.6 163.9 95.8 80.3 REMARK 620 8 ASP A 199 OD1 135.1 63.3 122.4 83.4 73.5 139.6 85.0 REMARK 620 N 1 2 3 4 5 6 7 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE K A 500 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 296 DBREF 1KRJ A 1 294 UNP P00431 CCPR_YEAST 68 361 SEQADV 1KRJ THR A 176 UNP P00431 ALA 243 ENGINEERED MUTATION SEQADV 1KRJ ASP A 192 UNP P00431 GLY 259 ENGINEERED MUTATION SEQADV 1KRJ THR A 194 UNP P00431 ALA 261 ENGINEERED MUTATION SEQADV 1KRJ ASP A 199 UNP P00431 THR 266 ENGINEERED MUTATION SEQADV 1KRJ SER A 201 UNP P00431 GLU 268 ENGINEERED MUTATION SEQRES 1 A 294 THR THR PRO LEU VAL HIS VAL ALA SER VAL GLU LYS GLY SEQRES 2 A 294 ARG SER TYR GLU ASP PHE GLN LYS VAL TYR ASN ALA ILE SEQRES 3 A 294 ALA LEU LYS LEU ARG GLU ASP ASP GLU TYR ASP ASN TYR SEQRES 4 A 294 ILE GLY TYR GLY PRO VAL LEU VAL ARG LEU ALA TRP HIS SEQRES 5 A 294 THR SER GLY THR TRP ASP LYS HIS ASP ASN THR GLY GLY SEQRES 6 A 294 SER TYR GLY GLY THR TYR ARG PHE LYS LYS GLU PHE ASN SEQRES 7 A 294 ASP PRO SER ASN ALA GLY LEU GLN ASN GLY PHE LYS PHE SEQRES 8 A 294 LEU GLU PRO ILE HIS LYS GLU PHE PRO TRP ILE SER SER SEQRES 9 A 294 GLY ASP LEU PHE SER LEU GLY GLY VAL THR ALA VAL GLN SEQRES 10 A 294 GLU MET GLN GLY PRO LYS ILE PRO TRP ARG CYS GLY ARG SEQRES 11 A 294 VAL ASP THR PRO GLU ASP THR THR PRO ASP ASN GLY ARG SEQRES 12 A 294 LEU PRO ASP ALA ASP LYS ASP ALA ASP TYR VAL ARG THR SEQRES 13 A 294 PHE PHE GLN ARG LEU ASN MET ASN ASP ARG GLU VAL VAL SEQRES 14 A 294 ALA LEU MET GLY ALA HIS THR LEU GLY LYS THR HIS LEU SEQRES 15 A 294 LYS ASN SER GLY TYR GLU GLY PRO TRP ASP ALA THR ASN SEQRES 16 A 294 ASN VAL PHE ASP ASN SER PHE TYR LEU ASN LEU LEU ASN SEQRES 17 A 294 GLU ASP TRP LYS LEU GLU LYS ASN ASP ALA ASN ASN GLU SEQRES 18 A 294 GLN TRP ASP SER LYS SER GLY TYR MET MET LEU PRO THR SEQRES 19 A 294 ASP TYR SER LEU ILE GLN ASP PRO LYS TYR LEU SER ILE SEQRES 20 A 294 VAL LYS GLU TYR ALA ASN ASP GLN ASP LYS PHE PHE LYS SEQRES 21 A 294 ASP PHE SER LYS ALA PHE GLU LYS LEU LEU GLU ASN GLY SEQRES 22 A 294 ILE THR PHE PRO LYS ASP ALA PRO SER PRO PHE ILE PHE SEQRES 23 A 294 LYS THR LEU GLU GLU GLN GLY LEU HET K A 500 1 HET HEM A 296 43 HETNAM K POTASSIUM ION HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETSYN HEM HEME FORMUL 2 K K 1+ FORMUL 3 HEM C34 H32 FE N4 O4 FORMUL 4 HOH *599(H2 O) HELIX 1 1 SER A 15 ASP A 33 1 19 HELIX 2 2 GLU A 35 ILE A 40 1 6 HELIX 3 3 TYR A 42 GLY A 55 1 14 HELIX 4 4 GLY A 69 ARG A 72 5 4 HELIX 5 5 PHE A 73 ASN A 78 1 6 HELIX 6 6 ASP A 79 ALA A 83 5 5 HELIX 7 7 GLY A 84 GLY A 84 5 1 HELIX 8 8 LEU A 85 PHE A 99 1 15 HELIX 9 9 SER A 103 MET A 119 1 17 HELIX 10 10 PRO A 134 THR A 138 5 5 HELIX 11 11 ASP A 150 ARG A 160 1 11 HELIX 12 12 ASN A 164 GLY A 173 1 10 HELIX 13 13 ALA A 174 LEU A 177 5 4 HELIX 14 14 HIS A 181 GLY A 186 1 6 HELIX 15 15 ASN A 200 GLU A 209 1 10 HELIX 16 16 LEU A 232 ASP A 241 1 10 HELIX 17 17 ASP A 241 ASN A 253 1 13 HELIX 18 18 ASP A 254 ASN A 272 1 19 HELIX 19 19 THR A 288 GLY A 293 1 6 SHEET 1 A 2 HIS A 6 VAL A 7 0 SHEET 2 A 2 ILE A 274 THR A 275 1 O THR A 275 N HIS A 6 SHEET 1 B 3 TRP A 211 LYS A 215 0 SHEET 2 B 3 GLU A 221 SER A 225 -1 O GLN A 222 N GLU A 214 SHEET 3 B 3 MET A 230 MET A 231 -1 O MET A 231 N TRP A 223 LINK NE2 HIS A 175 FE HEM A 296 1555 1555 2.17 LINK O THR A 176 K K A 500 1555 1555 2.37 LINK OG1 THR A 176 K K A 500 1555 1555 2.33 LINK OD1 ASP A 192 K K A 500 1555 1555 3.08 LINK OD2 ASP A 192 K K A 500 1555 1555 2.50 LINK OG1 THR A 194 K K A 500 1555 1555 2.44 LINK O THR A 194 K K A 500 1555 1555 2.12 LINK O VAL A 197 K K A 500 1555 1555 2.49 LINK OD1 ASP A 199 K K A 500 1555 1555 2.56 LINK FE HEM A 296 O HOH A 718 1555 1555 2.25 SITE 1 AC1 5 THR A 176 ASP A 192 THR A 194 VAL A 197 SITE 2 AC1 5 ASP A 199 SITE 1 AC2 23 PRO A 44 TRP A 51 PRO A 145 ASP A 146 SITE 2 AC2 23 ALA A 147 LEU A 171 MET A 172 ALA A 174 SITE 3 AC2 23 HIS A 175 LEU A 177 GLY A 178 LYS A 179 SITE 4 AC2 23 THR A 180 HIS A 181 ASN A 184 SER A 185 SITE 5 AC2 23 TRP A 191 LEU A 232 THR A 234 HOH A 319 SITE 6 AC2 23 HOH A 482 HOH A 483 HOH A 718 CRYST1 107.034 75.458 51.100 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 0.009343 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013252 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019569 0.00000