HEADER LYASE 22-JUL-99 1C1H TITLE CRYSTAL STRUCTURE OF BACILLUS SUBTILIS FERROCHELATASE IN COMPLEX WITH TITLE 2 N-METHYL MESOPORPHYRIN COMPND MOL_ID: 1; COMPND 2 MOLECULE: FERROCHELATASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: HEME SYNTHETASE; COMPND 5 EC: 4.99.1.1; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS SUBTILIS; SOURCE 3 ORGANISM_TAXID: 1423; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_PLASMID: PLUGT7-H KEYWDS ROSSMANN FOLD, ALPHA/BETA FOLD, FERROCHELATASE, HEME SYNTHESIS, KEYWDS 2 PORPHYRIN METALLATION, PI-HELIX, LYASE EXPDTA X-RAY DIFFRACTION AUTHOR D.LECEROF,M.FODJE,A.HANSSON,M.HANSSON,S.AL-KARADAGHI REVDAT 7 13-MAR-24 1C1H 1 COMPND SOURCE REVDAT 6 07-FEB-24 1C1H 1 REMARK LINK REVDAT 5 31-JAN-18 1C1H 1 REMARK REVDAT 4 04-OCT-17 1C1H 1 REMARK REVDAT 3 24-FEB-09 1C1H 1 VERSN REVDAT 2 01-APR-03 1C1H 1 JRNL REVDAT 1 17-MAR-00 1C1H 0 JRNL AUTH D.LECEROF,M.FODJE,A.HANSSON,M.HANSSON,S.AL-KARADAGHI JRNL TITL STRUCTURAL AND MECHANISTIC BASIS OF PORPHYRIN METALLATION BY JRNL TITL 2 FERROCHELATASE. JRNL REF J.MOL.BIOL. V. 297 221 2000 JRNL REFN ISSN 0022-2836 JRNL PMID 10704318 JRNL DOI 10.1006/JMBI.2000.3569 REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 0.5 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 : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 243314.930 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 97.7 REMARK 3 NUMBER OF REFLECTIONS : 21475 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) : 0.181 REMARK 3 FREE R VALUE : 0.231 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.900 REMARK 3 FREE R VALUE TEST SET COUNT : 1042 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.007 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.90 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.02 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 87.90 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 3204 REMARK 3 BIN R VALUE (WORKING SET) : 0.2140 REMARK 3 BIN FREE R VALUE : 0.2590 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 4.70 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 158 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.021 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2460 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 44 REMARK 3 SOLVENT ATOMS : 344 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 13.90 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 18.10 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 4.11000 REMARK 3 B22 (A**2) : -0.10000 REMARK 3 B33 (A**2) : -4.02000 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) : 0.20 REMARK 3 ESD FROM SIGMAA (A) : 0.14 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) : 0.25 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.19 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) : 22.00 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.550 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) : 1.900 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.740 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 4.050 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 6.400 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.35 REMARK 3 BSOL : 41.84 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.PA REMARK 3 PARAMETER FILE 2 : WATER_REP.PARA REMARK 3 PARAMETER FILE 3 : M_D_MPP.PAR REMARK 3 PARAMETER FILE 4 : MO6.PAR 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 : M_MPP.TOP REMARK 3 TOPOLOGY FILE 4 : MO6.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: ALTERNATE CONFORMATIONS FOR RESIDUES REMARK 3 33, 120, 121 AND 122 REMARK 4 REMARK 4 1C1H COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 26-JUL-99. REMARK 100 THE DEPOSITION ID IS D_1000009374. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 19-MAR-99 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : MAX II REMARK 200 BEAMLINE : I711 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MAR SCANNER 345 MM PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MAR REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 21475 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 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 (%) : 91.8 REMARK 200 DATA REDUNDANCY : 4.900 REMARK 200 R MERGE (I) : 0.07900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 13.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.94 REMARK 200 COMPLETENESS FOR SHELL (%) : 91.6 REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.34200 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: NULL REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 39.41 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.03 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 2000, MAGNESIUM CHLORIDE, TRIS REMARK 280 -HCL, PH 8.5, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293.0K 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 24.98500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 49.02500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 29.34000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 49.02500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 24.98500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 29.34000 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 MET A 1 REMARK 465 SER A 2 REMARK 465 ARG A 3 REMARK 465 LYS A 4 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 SER A 121 C VAL A 122 N -0.186 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 SER A 121 CA - C - N ANGL. DEV. = 15.1 DEGREES REMARK 500 SER A 121 O - C - N ANGL. DEV. = -15.2 DEGREES REMARK 500 VAL A 122 C - N - CA ANGL. DEV. = 21.2 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 SER A 121 -76.08 -97.54 REMARK 500 TRP A 147 16.60 -147.87 REMARK 500 ASN A 175 39.68 -147.06 REMARK 500 TYR A 267 -62.07 -108.10 REMARK 500 ASN A 269 -70.64 -101.07 REMARK 500 TYR A 271 -64.09 -104.32 REMARK 500 ASN A 291 -134.12 50.19 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 SER A 121 -10.83 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 MG A 900 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 901 O REMARK 620 2 HOH A 902 O 90.3 REMARK 620 3 HOH A 903 O 92.2 91.7 REMARK 620 4 HOH A 904 O 91.4 91.6 175.1 REMARK 620 5 HOH A 905 O 90.0 178.0 86.3 90.3 REMARK 620 6 HOH A 906 O 179.2 89.7 88.6 87.9 90.1 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 MG A 900 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MMP A 800 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1AK1 RELATED DB: PDB REMARK 900 BACILLUS SUBTILIS FERROCHELATSE DBREF 1C1H A 1 310 UNP P32396 HEMH_BACSU 1 310 SEQRES 1 A 310 MET SER ARG LYS LYS MET GLY LEU LEU VAL MET ALA TYR SEQRES 2 A 310 GLY THR PRO TYR LYS GLU GLU ASP ILE GLU ARG TYR TYR SEQRES 3 A 310 THR HIS ILE ARG ARG GLY ARG LYS PRO GLU PRO GLU MET SEQRES 4 A 310 LEU GLN ASP LEU LYS ASP ARG TYR GLU ALA ILE GLY GLY SEQRES 5 A 310 ILE SER PRO LEU ALA GLN ILE THR GLU GLN GLN ALA HIS SEQRES 6 A 310 ASN LEU GLU GLN HIS LEU ASN GLU ILE GLN ASP GLU ILE SEQRES 7 A 310 THR PHE LYS ALA TYR ILE GLY LEU LYS HIS ILE GLU PRO SEQRES 8 A 310 PHE ILE GLU ASP ALA VAL ALA GLU MET HIS LYS ASP GLY SEQRES 9 A 310 ILE THR GLU ALA VAL SER ILE VAL LEU ALA PRO HIS PHE SEQRES 10 A 310 SER THR PHE SER VAL GLN SER TYR ASN LYS ARG ALA LYS SEQRES 11 A 310 GLU GLU ALA GLU LYS LEU GLY GLY LEU THR ILE THR SER SEQRES 12 A 310 VAL GLU SER TRP TYR ASP GLU PRO LYS PHE VAL THR TYR SEQRES 13 A 310 TRP VAL ASP ARG VAL LYS GLU THR TYR ALA SER MET PRO SEQRES 14 A 310 GLU ASP GLU ARG GLU ASN ALA MET LEU ILE VAL SER ALA SEQRES 15 A 310 HIS SER LEU PRO GLU LYS ILE LYS GLU PHE GLY ASP PRO SEQRES 16 A 310 TYR PRO ASP GLN LEU HIS GLU SER ALA LYS LEU ILE ALA SEQRES 17 A 310 GLU GLY ALA GLY VAL SER GLU TYR ALA VAL GLY TRP GLN SEQRES 18 A 310 SER GLU GLY ASN THR PRO ASP PRO TRP LEU GLY PRO ASP SEQRES 19 A 310 VAL GLN ASP LEU THR ARG ASP LEU PHE GLU GLN LYS GLY SEQRES 20 A 310 TYR GLN ALA PHE VAL TYR VAL PRO VAL GLY PHE VAL ALA SEQRES 21 A 310 ASP HIS LEU GLU VAL LEU TYR ASP ASN ASP TYR GLU CYS SEQRES 22 A 310 LYS VAL VAL THR ASP ASP ILE GLY ALA SER TYR TYR ARG SEQRES 23 A 310 PRO GLU MET PRO ASN ALA LYS PRO GLU PHE ILE ASP ALA SEQRES 24 A 310 LEU ALA THR VAL VAL LEU LYS LYS LEU GLY ARG HET MG A 900 1 HET MMP A 800 43 HETNAM MG MAGNESIUM ION HETNAM MMP N-METHYLMESOPORPHYRIN FORMUL 2 MG MG 2+ FORMUL 3 MMP C35 H40 N4 O4 FORMUL 4 HOH *344(H2 O) HELIX 1 1 LYS A 18 GLU A 20 5 3 HELIX 2 2 ASP A 21 ARG A 30 1 10 HELIX 3 3 GLU A 36 ILE A 50 1 15 HELIX 4 4 ILE A 53 GLN A 75 1 23 HELIX 5 5 PHE A 92 GLY A 104 1 13 HELIX 6 6 VAL A 122 GLY A 137 1 16 HELIX 7 7 GLU A 150 SER A 167 1 18 HELIX 8 8 PRO A 169 GLU A 174 1 6 HELIX 9 9 GLU A 187 GLY A 193 5 7 HELIX 10 10 PRO A 195 GLY A 212 1 18 HELIX 11 11 ASP A 234 GLY A 247 1 14 HELIX 12 12 HIS A 262 TYR A 267 1 6 HELIX 13 13 TYR A 271 ILE A 280 1 10 HELIX 14 14 LYS A 293 LEU A 308 1 16 SHEET 1 A 4 PHE A 80 LEU A 86 0 SHEET 2 A 4 MET A 6 ALA A 12 1 O MET A 6 N LYS A 81 SHEET 3 A 4 GLU A 107 VAL A 112 1 O GLU A 107 N GLY A 7 SHEET 4 A 4 THR A 140 SER A 143 1 O THR A 140 N ALA A 108 SHEET 1 B 4 TYR A 216 GLN A 221 0 SHEET 2 B 4 ALA A 176 HIS A 183 1 O LEU A 178 N ALA A 217 SHEET 3 B 4 ALA A 250 VAL A 254 1 O ALA A 250 N MET A 177 SHEET 4 B 4 SER A 283 TYR A 285 1 O SER A 283 N PHE A 251 LINK MG MG A 900 O HOH A 901 1555 1555 2.07 LINK MG MG A 900 O HOH A 902 1555 1555 2.06 LINK MG MG A 900 O HOH A 903 1555 1555 2.07 LINK MG MG A 900 O HOH A 904 1555 1555 2.06 LINK MG MG A 900 O HOH A 905 1555 1555 2.05 LINK MG MG A 900 O HOH A 906 1555 1555 2.07 CISPEP 1 GLU A 90 PRO A 91 0 0.20 CISPEP 2 GLY A 232 PRO A 233 0 0.56 SITE 1 AC1 6 HOH A 901 HOH A 902 HOH A 903 HOH A 904 SITE 2 AC1 6 HOH A 905 HOH A 906 SITE 1 AC2 20 TYR A 13 TYR A 25 ILE A 29 ARG A 30 SITE 2 AC2 20 ARG A 31 ARG A 33 LYS A 87 PHE A 120 SITE 3 AC2 20 SER A 121 HIS A 183 LYS A 188 SER A 222 SITE 4 AC2 20 THR A 226 LEU A 263 GLU A 264 HOH A 441 SITE 5 AC2 20 HOH A 507 HOH A 597 HOH A 646 HOH A 712 CRYST1 49.970 58.680 98.050 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 0.020010 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017040 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010199 0.00000