PDB Short entry for 1KXM HEADER OXIDOREDUCTASE 01-FEB-02 1KXM TITLE CRYSTAL STRUCTURE OF CYTOCHROME C PEROXIDASE WITH A PROPOSED ELECTRON TITLE 2 TRANSFER PATHWAY EXCISED TO FORM A LIGAND BINDING CHANNEL. COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYTOCHROME C PEROXIDASE; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: RESIDUES 72-362, NUMBERED 4-292; COMPND 5 EC: 1.11.1.5; COMPND 6 ENGINEERED: YES; COMPND 7 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: CCP-MKT; 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 ENGINEERED HEME CHANNEL, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR R.J.ROSENFELD,A.M.A.HAYES,R.A.MUSAH,D.B.GOODIN REVDAT 7 16-AUG-23 1KXM 1 REMARK REVDAT 6 27-OCT-21 1KXM 1 REMARK SEQADV REVDAT 5 11-OCT-17 1KXM 1 REMARK REVDAT 4 24-FEB-09 1KXM 1 VERSN REVDAT 3 01-APR-03 1KXM 1 JRNL REVDAT 2 10-JUL-02 1KXM 1 JRNL REVDAT 1 06-MAR-02 1KXM 0 JRNL AUTH R.J.ROSENFELD,A.M.HAYS,R.A.MUSAH,D.B.GOODIN JRNL TITL EXCISION OF A PROPOSED ELECTRON TRANSFER PATHWAY IN JRNL TITL 2 CYTOCHROME C PEROXIDASE AND ITS REPLACEMENT BY A JRNL TITL 3 LIGAND-BINDING CHANNEL. JRNL REF PROTEIN SCI. V. 11 1251 2002 JRNL REFN ISSN 0961-8368 JRNL PMID 11967381 JRNL DOI 10.1110/PS.4870102 REMARK 2 REMARK 2 RESOLUTION. 1.74 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.74 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 77.8 REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.194 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : 0.214 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 2364 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 33260 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : 0.181 REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE (F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : 28615 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2317 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 52 REMARK 3 SOLVENT ATOMS : 347 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : 2760.0 REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : 0.00 REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : 0 REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : 11043 REMARK 3 NUMBER OF RESTRAINTS : 9782 REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.020 REMARK 3 ANGLE DISTANCES (A) : 0.024 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : NULL REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : NULL REMARK 3 ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : NULL REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : NULL REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : NULL REMARK 3 SIMILAR ADP COMPONENTS (A**2) : NULL REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: NULL REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1KXM COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 07-FEB-02. REMARK 100 THE DEPOSITION ID IS D_1000015441. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-JAN-96 REMARK 200 TEMPERATURE (KELVIN) : 100.0 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) : 1.54 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : SIEMENS REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XFIT, X-GEN REMARK 200 DATA SCALING SOFTWARE : X-GEN REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 33260 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.740 REMARK 200 RESOLUTION RANGE LOW (A) : 10.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 77.4 REMARK 200 DATA REDUNDANCY : 3.200 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04600 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 28.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.74 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.80 REMARK 200 COMPLETENESS FOR SHELL (%) : 40.1 REMARK 200 DATA REDUNDANCY IN SHELL : 1.70 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: XFIT REMARK 200 STARTING MODEL: PDB ENTRY 1CMQ REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 60.01 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.08 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MPD, PH 6.0, VAPOR DIFFUSION, SITTING REMARK 280 DROP, TEMPERATURE 298.0K 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 53.25000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 25.45000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.50000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 25.45000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 53.25000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.50000 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 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 LYS A 12 NZ REMARK 470 GLU A 17 CG CD OE1 OE2 REMARK 470 LYS A 74 CE REMARK 470 LYS A 183 CD CE NZ REMARK 470 LYS A 224 CB CG CD CE NZ REMARK 470 LYS A 258 NZ REMARK 470 LYS A 276 CD CE NZ 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 OD1 ASN A 141 O HOH A 712 1.77 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 706 O HOH A 821 2574 1.97 REMARK 500 OD1 ASN A 251 O HOH A 723 2574 2.19 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 LYS A 123 CE LYS A 123 NZ 0.862 REMARK 500 LEU A 292 C LEU A 292 OXT 0.789 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 TYR A 23 CB - CG - CD2 ANGL. DEV. = 4.3 DEGREES REMARK 500 TYR A 23 CG - CD2 - CE2 ANGL. DEV. = 5.6 DEGREES REMARK 500 ARG A 48 CD - NE - CZ ANGL. DEV. = 8.5 DEGREES REMARK 500 ARG A 48 NE - CZ - NH1 ANGL. DEV. = -3.7 DEGREES REMARK 500 ARG A 48 NE - CZ - NH2 ANGL. DEV. = 5.2 DEGREES REMARK 500 PHE A 157 CB - CG - CD1 ANGL. DEV. = -4.3 DEGREES REMARK 500 ASP A 277 C - N - CA ANGL. DEV. = 34.4 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 ASP A 33 59.53 -90.52 REMARK 500 GLN A 120 17.96 80.94 REMARK 500 ASP A 148 31.18 -93.31 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 1 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 175 NE2 REMARK 620 2 HEM A 1 NA 91.7 REMARK 620 3 HEM A 1 NB 96.7 89.0 REMARK 620 4 HEM A 1 NC 91.2 177.1 90.3 REMARK 620 5 HEM A 1 ND 89.8 90.0 173.4 90.4 REMARK 620 6 HOH A 313 O 171.5 84.5 90.8 92.7 82.6 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEM A 1 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE BZI A 2 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1CMQ RELATED DB: PDB REMARK 900 SMALL MOLECULE BINDING TO AN ARTIFICIALLY CREATED CAVITY AT THE REMARK 900 ACTIVE SITE OF CYTOCHROME C PEROXIDASE. REMARK 900 RELATED ID: 1KXN RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF CYTOCHROME C PEROXIDASE WITH A PROPOSED REMARK 900 ELECTRON TRANSFER PATHWAY EXCISED TO FORM A LIGAND BINDING CHANNEL. DBREF 1KXM A 4 292 UNP P00431 CCPR_YEAST 72 362 SEQADV 1KXM THR A 3 UNP P00431 CLONING ARTIFACT SEQADV 1KXM GLY A 190 UNP P00431 PRO 258 ENGINEERED MUTATION SEQADV 1KXM A UNP P00431 TRP 259 DELETION SEQADV 1KXM A UNP P00431 ALA 261 DELETION SEQRES 1 A 290 THR LEU VAL HIS VAL ALA SER VAL GLU LYS GLY ARG SER SEQRES 2 A 290 TYR GLU ASP PHE GLN LYS VAL TYR ASN ALA ILE ALA LEU SEQRES 3 A 290 LYS LEU ARG GLU ASP ASP GLU TYR ASP ASN TYR ILE GLY SEQRES 4 A 290 TYR GLY PRO VAL LEU VAL ARG LEU ALA TRP HIS ILE SER SEQRES 5 A 290 GLY THR TRP ASP LYS HIS ASP ASN THR GLY GLY SER TYR SEQRES 6 A 290 GLY GLY THR TYR ARG PHE LYS LYS GLU PHE ASN ASP PRO SEQRES 7 A 290 SER ASN ALA GLY LEU GLN ASN GLY PHE LYS PHE LEU GLU SEQRES 8 A 290 PRO ILE HIS LYS GLU PHE PRO TRP ILE SER SER GLY ASP SEQRES 9 A 290 LEU PHE SER LEU GLY GLY VAL THR ALA VAL GLN GLU MET SEQRES 10 A 290 GLN GLY PRO LYS ILE PRO TRP ARG CYS GLY ARG VAL ASP SEQRES 11 A 290 THR PRO GLU ASP THR THR PRO ASP ASN GLY ARG LEU PRO SEQRES 12 A 290 ASP ALA ASP LYS ASP ALA GLY TYR VAL ARG THR PHE PHE SEQRES 13 A 290 GLN ARG LEU ASN MET ASN ASP ARG GLU VAL VAL ALA LEU SEQRES 14 A 290 MET GLY ALA HIS ALA LEU GLY LYS THR HIS LEU LYS ASN SEQRES 15 A 290 SER GLY TYR GLU GLY GLY GLY ALA ASN ASN VAL PHE THR SEQRES 16 A 290 ASN GLU PHE TYR LEU ASN LEU LEU ASN GLU ASP TRP LYS SEQRES 17 A 290 LEU GLU LYS ASN ASP ALA ASN ASN GLU GLN TRP ASP SER SEQRES 18 A 290 LYS SER GLY TYR MET MET LEU PRO THR ASP TYR SER LEU SEQRES 19 A 290 ILE GLN ASP PRO LYS TYR LEU SER ILE VAL LYS GLU TYR SEQRES 20 A 290 ALA ASN ASP GLN ASP LYS PHE PHE LYS ASP PHE SER LYS SEQRES 21 A 290 ALA PHE GLU LYS LEU LEU GLU ASN GLY ILE THR PHE PRO SEQRES 22 A 290 LYS ASP ALA PRO SER PRO PHE ILE PHE LYS THR LEU GLU SEQRES 23 A 290 GLU GLN GLY LEU HET HEM A 1 43 HET BZI A 2 9 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM BZI BENZIMIDAZOLE HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 FORMUL 3 BZI C7 H6 N2 FORMUL 4 HOH *347(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 198 GLU A 207 1 10 HELIX 16 16 LEU A 230 ASP A 239 1 10 HELIX 17 17 ASP A 239 ASN A 251 1 13 HELIX 18 19 THR A 286 GLY A 291 1 6 SHEET 1 A 3 TRP A 209 LYS A 213 0 SHEET 2 A 3 GLU A 219 SER A 223 -1 O ASP A 222 N LYS A 210 SHEET 3 A 3 MET A 228 MET A 229 -1 O MET A 229 N TRP A 221 LINK FE HEM A 1 NE2 HIS A 175 1555 1555 2.07 LINK FE HEM A 1 O HOH A 313 1555 1555 2.00 SITE 1 AC1 25 BZI A 2 PRO A 44 ARG A 48 TRP A 51 SITE 2 AC1 25 PRO A 145 ASP A 146 ALA A 147 LEU A 171 SITE 3 AC1 25 MET A 172 ALA A 174 HIS A 175 LEU A 177 SITE 4 AC1 25 GLY A 178 LYS A 179 THR A 180 HIS A 181 SITE 5 AC1 25 ASN A 184 SER A 185 LEU A 230 THR A 232 SITE 6 AC1 25 HOH A 302 HOH A 311 HOH A 313 HOH A 314 SITE 7 AC1 25 HOH A 811 SITE 1 AC2 9 HEM A 1 HIS A 175 LEU A 177 GLY A 178 SITE 2 AC2 9 LYS A 179 MET A 228 MET A 229 ASP A 233 SITE 3 AC2 9 HOH A 799 CRYST1 106.500 75.000 50.900 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 0.009390 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013333 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019646 0.00000