HEADER PEROXIDASE 16-MAY-98 1BEP TITLE EFFECT OF UNNATURAL HEME SUBSTITUTION ON KINETICS OF ELECTRON TRANSFER TITLE 2 IN CYTOCHROME C PEROXIDASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: YEAST CYTOCHROME C PEROXIDASE; COMPND 3 CHAIN: A; COMPND 4 EC: 1.11.1.5; COMPND 5 ENGINEERED: YES; COMPND 6 OTHER_DETAILS: THE NATURALLY OCCURRING PROTOHEME REPLACED BY COMPND 7 CHLOROCRUOROHEME 2-CHO, 4CH=CH2 PORPHYRIN 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_PLASMID: PUC18CCPMI KEYWDS PEROXIDASE, OXIDOREDUCTASE EXPDTA X-RAY DIFFRACTION AUTHOR M.MILLER,J.KRAUT REVDAT 4 07-FEB-24 1BEP 1 REMARK SEQADV LINK REVDAT 3 14-MAR-18 1BEP 1 SEQADV REVDAT 2 24-FEB-09 1BEP 1 VERSN REVDAT 1 21-OCT-98 1BEP 0 JRNL AUTH M.A.MILLER,F.MILLETT,B.DURHAM,H.K.MEI,V.A.ASHFORD, JRNL AUTH 2 N.-H.XUONG,J.KRAUT JRNL TITL EFFECT OF UNNATURAL HEME SUBSTITUTION ON KINETICS OF JRNL TITL 2 ELECTRON TRANSFER IN CYTOCHROME C PEROXIDASE JRNL REF TO BE PUBLISHED JRNL REFN REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.M.WANG,M.MAURO,S.L.EDWARDS,S.J.OATLEY,L.A.FISHEL, REMARK 1 AUTH 2 V.A.ASHFORD,N.H.XUONG,J.KRAUT REMARK 1 TITL X-RAY STRUCTURES OF RECOMBINANT YEAST CYTOCHROME C REMARK 1 TITL 2 PEROXIDASE AND THREE HEME-CLEFT MUTANTS PREPARED BY REMARK 1 TITL 3 SITE-DIRECTED MUTAGENESIS REMARK 1 REF BIOCHEMISTRY V. 29 7160 1990 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 2 REMARK 1 AUTH B.C.FINZEL,T.L.POULOS,J.KRAUT REMARK 1 TITL CRYSTAL STRUCTURE OF YEAST CYTOCHROME C PEROXIDASE REFINED REMARK 1 TITL 2 AT 1.7-A RESOLUTION REMARK 1 REF J.BIOL.CHEM. V. 259 13027 1984 REMARK 1 REFN ISSN 0021-9258 REMARK 2 REMARK 2 RESOLUTION. 2.20 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : TNT 1 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) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 17845 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) : NULL 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) : 0.1800 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL 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 : 2292 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 43 REMARK 3 SOLVENT ATOMS : 179 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) : 0.008 ; NULL ; NULL REMARK 3 BOND ANGLES (DEGREES) : 2.109 ; NULL ; NULL REMARK 3 TORSION ANGLES (DEGREES) : 16.107; NULL ; NULL REMARK 3 PSEUDOROTATION ANGLES (DEGREES) : NULL ; NULL ; NULL REMARK 3 TRIGONAL CARBON PLANES (A) : 0.004 ; NULL ; NULL REMARK 3 GENERAL PLANES (A) : 0.006 ; NULL ; NULL REMARK 3 ISOTROPIC THERMAL FACTORS (A**2) : 3.923 ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS (A) : 0.021 ; NULL ; NULL REMARK 3 REMARK 3 INCORRECT CHIRAL-CENTERS (COUNT) : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : NULL 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: NULL REMARK 4 REMARK 4 1BEP COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000171667. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : JUN-97 REMARK 200 TEMPERATURE (KELVIN) : 273 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 RUH2R REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 22700 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.200 REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 95.0 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.07836 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL 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) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.22700 REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.770 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 54.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.67 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 30% MPD; 50 MM POTASSIUM PHOSPHATE, PH REMARK 280 6.0 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 52.56000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 22.68200 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.15300 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 22.68200 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 52.56000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.15300 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 CD CE NZ REMARK 470 GLU A 17 CG CD OE1 OE2 REMARK 470 GLU A 35 CG CD OE1 OE2 REMARK 470 ASN A 38 CG OD1 ND2 REMARK 470 TYR A 39 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 LYS A 74 CG CD CE NZ REMARK 470 LYS A 90 CD CE NZ REMARK 470 GLU A 93 CD OE1 OE2 REMARK 470 LYS A 97 CD CE NZ REMARK 470 GLU A 98 OE1 OE2 REMARK 470 ASP A 136 CG OD1 OD2 REMARK 470 LYS A 183 CG CD CE NZ REMARK 470 LYS A 226 CG CD CE NZ REMARK 470 LYS A 243 CE NZ REMARK 470 ASP A 256 CG OD1 OD2 REMARK 470 LYS A 260 CE NZ REMARK 470 LYS A 264 CE NZ REMARK 470 LYS A 287 CE 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 GLU A 76 CD GLU A 76 OE1 0.070 REMARK 500 GLU A 118 CD GLU A 118 OE1 0.069 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 18 CB - CG - OD1 ANGL. DEV. = -5.7 DEGREES REMARK 500 ASP A 37 CB - CG - OD2 ANGL. DEV. = -5.6 DEGREES REMARK 500 ASP A 58 CB - CG - OD1 ANGL. DEV. = 5.9 DEGREES REMARK 500 ASP A 61 CB - CG - OD2 ANGL. DEV. = -6.1 DEGREES REMARK 500 GLU A 93 CB - CA - C ANGL. DEV. = 12.3 DEGREES REMARK 500 ARG A 127 NE - CZ - NH1 ANGL. DEV. = 3.4 DEGREES REMARK 500 ARG A 130 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 ASP A 132 CB - CG - OD1 ANGL. DEV. = 5.8 DEGREES REMARK 500 ASP A 132 CB - CG - OD2 ANGL. DEV. = -6.7 DEGREES REMARK 500 ASP A 140 CB - CG - OD2 ANGL. DEV. = -5.5 DEGREES REMARK 500 ASP A 146 CB - CG - OD1 ANGL. DEV. = -6.7 DEGREES REMARK 500 ASP A 150 CB - CG - OD1 ANGL. DEV. = 5.4 DEGREES REMARK 500 ASP A 150 CB - CG - OD2 ANGL. DEV. = -5.8 DEGREES REMARK 500 ASP A 165 CB - CG - OD1 ANGL. DEV. = 6.8 DEGREES REMARK 500 ASP A 165 CB - CG - OD2 ANGL. DEV. = -7.5 DEGREES REMARK 500 ASP A 235 CB - CG - OD2 ANGL. DEV. = -5.8 DEGREES REMARK 500 ASP A 254 CB - CG - OD1 ANGL. DEV. = 5.5 DEGREES REMARK 500 ASP A 254 CB - CG - OD2 ANGL. DEV. = -7.1 DEGREES REMARK 500 ASP A 272 CB - CG - OD1 ANGL. DEV. = 6.1 DEGREES REMARK 500 ASP A 272 CB - CG - OD2 ANGL. DEV. = -7.0 DEGREES REMARK 500 ASP A 279 CB - CG - OD1 ANGL. DEV. = -6.0 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 LYS A 12 113.23 -37.76 REMARK 500 ASP A 148 36.93 -87.22 REMARK 500 LYS A 149 -168.58 -118.40 REMARK 500 ASN A 219 35.61 75.25 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 CCH A 296 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 175 NE2 REMARK 620 2 CCH A 296 NA 97.2 REMARK 620 3 CCH A 296 NB 93.4 83.0 REMARK 620 4 CCH A 296 NC 85.0 177.8 97.3 REMARK 620 5 CCH A 296 ND 93.1 91.6 172.0 87.8 REMARK 620 6 HOH A 595 O 170.6 73.6 83.4 104.2 89.4 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 CCH A 296 DBREF 1BEP A 4 294 UNP P00431 CCPR_YEAST 71 361 SEQADV 1BEP ILE A 53 UNP P00431 THR 120 ENGINEERED MUTATION SEQADV 1BEP GLY A 152 UNP P00431 ASP 219 ENGINEERED MUTATION SEQADV 1BEP ASP A 272 UNP P00431 ASN 339 ENGINEERED MUTATION SEQRES 1 A 291 LEU VAL HIS VAL ALA SER VAL GLU LYS GLY ARG SER TYR SEQRES 2 A 291 GLU ASP PHE GLN LYS VAL TYR ASN ALA ILE ALA LEU LYS SEQRES 3 A 291 LEU ARG GLU ASP ASP GLU TYR ASP ASN TYR ILE GLY TYR SEQRES 4 A 291 GLY PRO VAL LEU VAL ARG LEU ALA TRP HIS ILE SER GLY SEQRES 5 A 291 THR TRP ASP LYS HIS ASP ASN THR GLY GLY SER TYR GLY SEQRES 6 A 291 GLY THR TYR ARG PHE LYS LYS GLU PHE ASN ASP PRO SER SEQRES 7 A 291 ASN ALA GLY LEU GLN ASN GLY PHE LYS PHE LEU GLU PRO SEQRES 8 A 291 ILE HIS LYS GLU PHE PRO TRP ILE SER SER GLY ASP LEU SEQRES 9 A 291 PHE SER LEU GLY GLY VAL THR ALA VAL GLN GLU MET GLN SEQRES 10 A 291 GLY PRO LYS ILE PRO TRP ARG CYS GLY ARG VAL ASP THR SEQRES 11 A 291 PRO GLU ASP THR THR PRO ASP ASN GLY ARG LEU PRO ASP SEQRES 12 A 291 ALA ASP LYS ASP ALA GLY TYR VAL ARG THR PHE PHE GLN SEQRES 13 A 291 ARG LEU ASN MET ASN ASP ARG GLU VAL VAL ALA LEU MET SEQRES 14 A 291 GLY ALA HIS ALA LEU GLY LYS THR HIS LEU LYS ASN SER SEQRES 15 A 291 GLY TYR GLU GLY PRO TRP GLY ALA ALA ASN ASN VAL PHE SEQRES 16 A 291 THR ASN GLU PHE TYR LEU ASN LEU LEU ASN GLU ASP TRP SEQRES 17 A 291 LYS LEU GLU LYS ASN ASP ALA ASN ASN GLU GLN TRP ASP SEQRES 18 A 291 SER LYS SER GLY TYR MET MET LEU PRO THR ASP TYR SER SEQRES 19 A 291 LEU ILE GLN ASP PRO LYS TYR LEU SER ILE VAL LYS GLU SEQRES 20 A 291 TYR ALA ASN ASP GLN ASP LYS PHE PHE LYS ASP PHE SER SEQRES 21 A 291 LYS ALA PHE GLU LYS LEU LEU GLU ASP GLY ILE THR PHE SEQRES 22 A 291 PRO LYS ASP ALA PRO SER PRO PHE ILE PHE LYS THR LEU SEQRES 23 A 291 GLU GLU GLN GLY LEU HET CCH A 296 43 HETNAM CCH [7-ETHENYL-12-FORMYL-3,8,13,17-TERTRAMETHYL-21H,23H- HETNAM 2 CCH PORPHINE-2,18-DIPROPANOATO(2)-N21,N22,N23,N24]IRON HETSYN CCH CLOROCRUORO HEM FORMUL 2 CCH C33 H30 FE N4 O5 FORMUL 3 HOH *179(H2 O) HELIX 1 1 TYR A 16 GLU A 32 1 17 HELIX 2 2 TYR A 36 TYR A 39 1 4 HELIX 3 3 GLY A 43 SER A 54 1 12 HELIX 4 4 THR A 70 ARG A 72 5 3 HELIX 5 5 LYS A 74 PHE A 77 1 4 HELIX 6 6 PRO A 80 ASN A 82 5 3 HELIX 7 7 LEU A 85 GLU A 98 5 14 HELIX 8 8 SER A 104 GLU A 118 1 15 HELIX 9 9 GLU A 135 THR A 137 5 3 HELIX 10 10 ALA A 151 LEU A 161 1 11 HELIX 11 11 ASP A 165 ALA A 176 1 12 HELIX 12 12 LEU A 182 SER A 185 1 4 HELIX 13 13 GLU A 201 ASN A 208 1 8 HELIX 14 14 PRO A 233 GLN A 240 1 8 HELIX 15 15 PRO A 242 ASN A 253 1 12 HELIX 16 16 GLN A 255 GLU A 271 1 17 HELIX 17 17 LEU A 289 GLN A 292 1 4 SHEET 1 A 2 TRP A 211 LYS A 215 0 SHEET 2 A 2 GLU A 221 SER A 225 -1 N ASP A 224 O LYS A 212 LINK NE2 HIS A 175 FE CCH A 296 1555 1555 2.13 LINK FE CCH A 296 O HOH A 595 1555 1555 1.99 SITE 1 AC1 20 PRO A 44 ARG A 48 TRP A 51 PRO A 145 SITE 2 AC1 20 ASP A 146 LEU A 171 ALA A 174 HIS A 175 SITE 3 AC1 20 LEU A 177 GLY A 178 LYS A 179 THR A 180 SITE 4 AC1 20 HIS A 181 ASN A 184 SER A 185 TRP A 191 SITE 5 AC1 20 HOH A 348 HOH A 595 HOH A 895 HOH A 896 CRYST1 105.120 74.306 45.364 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 0.009513 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013458 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022044 0.00000