PDB Short entry for 1DSO HEADER OXIDOREDUCTASE 07-JAN-00 1DSO TITLE CYTOCHROME C PEROXIDASE H175G MUTANT, IMIDAZOLE COMPLEX AT PH 6, ROOM TITLE 2 TEMPERATURE. COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYTOCHROME C PEROXIDASE; COMPND 3 CHAIN: A; COMPND 4 EC: 1.11.1.5; COMPND 5 ENGINEERED: YES; COMPND 6 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 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PT7CCP KEYWDS HEME ENZYME, PEROXIDASE, CAVITY MUTANT, LIGAND BINDING, KEYWDS 2 OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR J.HIRST,S.K.WILCOX,P.A.WILLIAMS,D.E.MCREE,D.B.GOODIN REVDAT 5 07-FEB-24 1DSO 1 REMARK REVDAT 4 03-NOV-21 1DSO 1 REMARK SEQADV LINK REVDAT 3 24-FEB-09 1DSO 1 VERSN REVDAT 2 01-APR-03 1DSO 1 JRNL REVDAT 1 07-MAR-01 1DSO 0 JRNL AUTH J.HIRST,S.K.WILCOX,P.A.WILLIAMS,J.BLANKENSHIP,D.E.MCREE, JRNL AUTH 2 D.B.GOODIN JRNL TITL REPLACEMENT OF THE AXIAL HISTIDINE LIGAND WITH IMIDAZOLE IN JRNL TITL 2 CYTOCHROME C PEROXIDASE. 1. EFFECTS ON STRUCTURE. JRNL REF BIOCHEMISTRY V. 40 1265 2001 JRNL REFN ISSN 0006-2960 JRNL PMID 11170452 JRNL DOI 10.1021/BI002089R REMARK 2 REMARK 2 RESOLUTION. 2.03 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97 REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.03 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 9.10 REMARK 3 DATA CUTOFF (SIGMA(F)) : 4.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.233 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.172 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) : 0 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 26394 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : NULL 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)) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2342 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 48 REMARK 3 SOLVENT ATOMS : 104 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : NULL REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : NULL REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : NULL REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : NULL REMARK 3 NUMBER OF RESTRAINTS : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.005 REMARK 3 ANGLE DISTANCES (A) : 1.900 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 & HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1DSO COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 13-JAN-00. REMARK 100 THE DEPOSITION ID IS D_1000010332. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 20-NOV-98 REMARK 200 TEMPERATURE (KELVIN) : 281 REMARK 200 PH : 6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL7-1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.08 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 : XFIT, MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26702 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.030 REMARK 200 RESOLUTION RANGE LOW (A) : 9.080 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 94.5 REMARK 200 DATA REDUNDANCY : 3.900 REMARK 200 R MERGE (I) : 0.17200 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 4.3000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.03 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.08 REMARK 200 COMPLETENESS FOR SHELL (%) : 66.2 REMARK 200 DATA REDUNDANCY IN SHELL : 2.90 REMARK 200 R MERGE FOR SHELL (I) : 0.72600 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: XFIT REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 61.56 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.20 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MES, IMIDAZOLE, PH 6, MICRODIALYSIS, REMARK 280 TEMPERATURE 288K 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 53.85500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 25.72500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 38.41500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 25.72500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 53.85500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 38.41500 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 THR A 3 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 LYS A 260 NZ 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 LEU A 294 C LEU A 294 OXT 2.222 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 14 NE - CZ - NH2 ANGL. DEV. = 5.4 DEGREES REMARK 500 ARG A 155 CD - NE - CZ ANGL. DEV. = 37.7 DEGREES REMARK 500 ARG A 155 NE - CZ - NH1 ANGL. DEV. = -3.6 DEGREES REMARK 500 ARG A 155 NE - CZ - NH2 ANGL. DEV. = 6.4 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 56.27 -94.15 REMARK 500 ASP A 148 47.56 -102.94 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 A1001 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 313 O REMARK 620 2 HEM A1001 NA 86.9 REMARK 620 3 HEM A1001 NB 91.5 89.9 REMARK 620 4 HEM A1001 NC 102.5 170.5 90.6 REMARK 620 5 HEM A1001 ND 99.0 89.5 169.5 88.3 REMARK 620 6 IMD A1500 N3 173.7 86.8 88.1 83.8 81.4 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 1001 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IMD A 1500 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1DSE RELATED DB: PDB REMARK 900 CYTOCHROME C PEROXIDASE H175G MUTANT, IMIDAZOLE COMPLEX, PH 6, 100K REMARK 900 (LOW TEMPERATURE STRUCTURE CRYSTALLIZED IN ABSENCE OF PHOSPHATE) REMARK 900 RELATED ID: 1DSG RELATED DB: PDB REMARK 900 CYTOCHROME C PEROXIDASE H175G MUTANT, IMIDAZOLE COMPLEX AT PH 5, REMARK 900 ROOM TEMPERATURE REMARK 900 RELATED ID: 1DSP RELATED DB: PDB REMARK 900 CYTOCHROME C PEROXIDASE H175G MUTANT, IMIDAZOLE COMPLEX AT PH 7, REMARK 900 ROOM TEMPERATURE REMARK 900 RELATED ID: 1DS4 RELATED DB: PDB REMARK 900 CYTOCHROME C PEROXIDASE H175G MUTANT, IMIDAZOLE COMPLEX, PH 6, 100K REMARK 900 RELATED ID: 1CCA RELATED DB: PDB REMARK 900 CYTOCHROME C PEROXIDASE WILD TYPE DBREF 1DSO A 3 294 UNP P00431 CCPR_YEAST 70 361 SEQADV 1DSO THR A 3 UNP P00431 PRO 70 CONFLICT SEQADV 1DSO ILE A 53 UNP P00431 THR 120 CONFLICT SEQADV 1DSO GLU A 76 UNP P00431 GLN 143 CONFLICT SEQADV 1DSO GLY A 152 UNP P00431 ASP 219 CONFLICT SEQADV 1DSO GLY A 175 UNP P00431 HIS 242 ENGINEERED MUTATION SEQRES 1 A 292 THR LEU VAL HIS VAL ALA SER VAL GLU LYS GLY ARG SER SEQRES 2 A 292 TYR GLU ASP PHE GLN LYS VAL TYR ASN ALA ILE ALA LEU SEQRES 3 A 292 LYS LEU ARG GLU ASP ASP GLU TYR ASP ASN TYR ILE GLY SEQRES 4 A 292 TYR GLY PRO VAL LEU VAL ARG LEU ALA TRP HIS ILE SER SEQRES 5 A 292 GLY THR TRP ASP LYS HIS ASP ASN THR GLY GLY SER TYR SEQRES 6 A 292 GLY GLY THR TYR ARG PHE LYS LYS GLU PHE ASN ASP PRO SEQRES 7 A 292 SER ASN ALA GLY LEU GLN ASN GLY PHE LYS PHE LEU GLU SEQRES 8 A 292 PRO ILE HIS LYS GLU PHE PRO TRP ILE SER SER GLY ASP SEQRES 9 A 292 LEU PHE SER LEU GLY GLY VAL THR ALA VAL GLN GLU MET SEQRES 10 A 292 GLN GLY PRO LYS ILE PRO TRP ARG CYS GLY ARG VAL ASP SEQRES 11 A 292 THR PRO GLU ASP THR THR PRO ASP ASN GLY ARG LEU PRO SEQRES 12 A 292 ASP ALA ASP LYS ASP ALA GLY TYR VAL ARG THR PHE PHE SEQRES 13 A 292 GLN ARG LEU ASN MET ASN ASP ARG GLU VAL VAL ALA LEU SEQRES 14 A 292 MET GLY ALA GLY ALA LEU GLY LYS THR HIS LEU LYS ASN SEQRES 15 A 292 SER GLY TYR GLU GLY PRO TRP GLY ALA ALA ASN ASN VAL SEQRES 16 A 292 PHE THR ASN GLU PHE TYR LEU ASN LEU LEU ASN GLU ASP SEQRES 17 A 292 TRP LYS LEU GLU LYS ASN ASP ALA ASN ASN GLU GLN TRP SEQRES 18 A 292 ASP SER LYS SER GLY TYR MET MET LEU PRO THR ASP TYR SEQRES 19 A 292 SER LEU ILE GLN ASP PRO LYS TYR LEU SER ILE VAL LYS SEQRES 20 A 292 GLU TYR ALA ASN ASP GLN ASP LYS PHE PHE LYS ASP PHE SEQRES 21 A 292 SER LYS ALA PHE GLU LYS LEU LEU GLU ASN GLY ILE THR SEQRES 22 A 292 PHE PRO LYS ASP ALA PRO SER PRO PHE ILE PHE LYS THR SEQRES 23 A 292 LEU GLU GLU GLN GLY LEU HET HEM A1001 43 HET IMD A1500 5 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM IMD IMIDAZOLE HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 FORMUL 3 IMD C3 H5 N2 1+ FORMUL 4 HOH *104(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 ALA A 174 1 11 HELIX 13 13 GLY A 175 LEU A 177 5 3 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 SER A 237 1 6 HELIX 17 17 TYR A 236 ASP A 241 1 6 HELIX 18 18 ASP A 241 ASN A 253 1 13 HELIX 19 19 ASP A 254 ASN A 272 1 19 HELIX 20 20 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 N THR A 275 O HIS A 6 SHEET 1 B 2 LYS A 179 THR A 180 0 SHEET 2 B 2 GLY A 189 PRO A 190 -1 O GLY A 189 N THR A 180 SHEET 1 C 3 TRP A 211 LYS A 215 0 SHEET 2 C 3 GLU A 221 SER A 225 -1 N GLN A 222 O GLU A 214 SHEET 3 C 3 MET A 230 MET A 231 -1 O MET A 231 N TRP A 223 LINK O HOH A 313 FE HEM A1001 1555 1555 1.84 LINK FE HEM A1001 N3 IMD A1500 1555 1555 2.42 SITE 1 AC1 18 PRO A 44 ARG A 48 TRP A 51 PRO A 145 SITE 2 AC1 18 ASP A 146 ALA A 147 GLY A 178 LYS A 179 SITE 3 AC1 18 THR A 180 HIS A 181 ASN A 184 SER A 185 SITE 4 AC1 18 LEU A 232 HOH A 302 HOH A 311 HOH A 313 SITE 5 AC1 18 HOH A 314 IMD A1500 SITE 1 AC2 4 MET A 172 TRP A 191 ASP A 235 HEM A1001 CRYST1 107.710 76.830 51.450 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 0.009284 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013016 0.000000 0.00000 SCALE3 0.000000 0.000000 0.019436 0.00000