HEADER METAL BINDING PROTEIN 31-AUG-21 7S10 TITLE CRYSTAL STRUCTURE OF ASCORBATE PEROXIDASE TRIPLE MUTANT: S160M, L203M, TITLE 2 Q204M COMPND MOL_ID: 1; COMPND 2 MOLECULE: L-ASCORBATE PEROXIDASE; COMPND 3 CHAIN: A; COMPND 4 EC: 1.11.1.11; COMPND 5 ENGINEERED: YES; COMPND 6 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: GLYCINE MAX; SOURCE 3 ORGANISM_COMMON: SOYBEAN, GLYCINE HISPIDA; SOURCE 4 ORGANISM_TAXID: 3847; SOURCE 5 GENE: APX1; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS MUTANT, PEROXIDASE, METAL BINDING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR T.L.POULOS,J.KIM,V.MURARKA REVDAT 2 18-OCT-23 7S10 1 REMARK REVDAT 1 07-SEP-22 7S10 0 JRNL AUTH T.L.POULOS,J.S.KIM,V.C.MURARKA JRNL TITL COMPUTATIONAL ANALYSIS OF THE TRYPTOPHAN CATION RADICAL JRNL TITL 2 ENERGETICS IN PEROXIDASE COMPOUND I. JRNL REF J.BIOL.INORG.CHEM. V. 27 229 2022 JRNL REFN ESSN 1432-1327 JRNL PMID 35064363 JRNL DOI 10.1007/S00775-022-01925-8 REMARK 2 REMARK 2 RESOLUTION. 1.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.11.1_2575 REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : GEOSTD + MONOMER LIBRARY + CDL V1.2 REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 36.23 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.338 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.4 REMARK 3 NUMBER OF REFLECTIONS : 51564 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.173 REMARK 3 R VALUE (WORKING SET) : 0.171 REMARK 3 FREE R VALUE : 0.208 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 3.299 REMARK 3 FREE R VALUE TEST SET COUNT : 1701 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 36.2285 - 3.2045 1.00 4464 153 0.1479 0.1874 REMARK 3 2 3.2045 - 2.5437 1.00 4254 145 0.1774 0.2288 REMARK 3 3 2.5437 - 2.2222 1.00 4229 143 0.1691 0.1760 REMARK 3 4 2.2222 - 2.0191 1.00 4157 142 0.1763 0.2026 REMARK 3 5 2.0191 - 1.8744 1.00 4182 143 0.1818 0.2011 REMARK 3 6 1.8744 - 1.7639 1.00 4135 141 0.1895 0.2245 REMARK 3 7 1.7639 - 1.6755 1.00 4136 141 0.1865 0.2361 REMARK 3 8 1.6755 - 1.6026 1.00 4134 141 0.1784 0.2375 REMARK 3 9 1.6026 - 1.5409 1.00 4129 141 0.1915 0.2234 REMARK 3 10 1.5409 - 1.4877 1.00 4100 140 0.2023 0.2531 REMARK 3 11 1.4877 - 1.4412 0.99 4076 139 0.2251 0.2954 REMARK 3 12 1.4412 - 1.4000 0.95 3867 132 0.2557 0.3006 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.150 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 21.534 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 17.93 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 26.13 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 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.011 2076 REMARK 3 ANGLE : 0.853 2833 REMARK 3 CHIRALITY : 0.071 289 REMARK 3 PLANARITY : 0.006 368 REMARK 3 DIHEDRAL : 6.939 1201 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 7S10 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 01-SEP-21. REMARK 100 THE DEPOSITION ID IS D_1000259389. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 25-JUL-21 REMARK 200 TEMPERATURE (KELVIN) : 77 REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SSRL REMARK 200 BEAMLINE : BL12-2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97946 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : AIMLESS 0.7.7 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 51578 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.400 REMARK 200 RESOLUTION RANGE LOW (A) : 37.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.4 REMARK 200 DATA REDUNDANCY : 12.30 REMARK 200 R MERGE (I) : 0.11000 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 41.2400 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.45 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.2 REMARK 200 DATA REDUNDANCY IN SHELL : 4.10 REMARK 200 R MERGE FOR SHELL (I) : 0.57420 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 1.480 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: 1OAG REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 47.83 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.36 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: MAGNESIUM SULFATE, PH 8.0, VAPOR REMARK 280 DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 42 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -Y+1/2,X+1/2,Z+1/2 REMARK 290 4555 Y+1/2,-X+1/2,Z+1/2 REMARK 290 5555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 6555 X+1/2,-Y+1/2,-Z+1/2 REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-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 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 41.32200 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 41.32200 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 37.66100 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 41.32200 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 41.32200 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 37.66100 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 41.32200 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 41.32200 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 37.66100 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 41.32200 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 41.32200 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 37.66100 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 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 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PISA 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 419 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 439 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 447 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 660 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 672 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 705 LIES ON A SPECIAL POSITION. 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 O HOH A 628 O HOH A 689 2.08 REMARK 500 O HOH A 445 O HOH A 689 2.10 REMARK 500 O HOH A 470 O HOH A 689 2.13 REMARK 500 O HOH A 410 O HOH A 694 2.16 REMARK 500 O HOH A 403 O HOH A 720 2.17 REMARK 500 O HOH A 496 O HOH A 689 2.18 REMARK 500 O HOH A 668 O HOH A 689 2.19 REMARK 500 OG SER A 43 O HOH A 401 2.19 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 689 O HOH A 744 6465 2.12 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 ARG A 172 -86.38 -102.69 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 747 DISTANCE = 5.88 ANGSTROMS REMARK 525 HOH A 748 DISTANCE = 6.98 ANGSTROMS 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 301 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 163 NE2 REMARK 620 2 HEM A 301 NA 96.3 REMARK 620 3 HEM A 301 NB 93.6 90.2 REMARK 620 4 HEM A 301 NC 89.7 174.0 89.9 REMARK 620 5 HEM A 301 ND 96.7 89.2 169.7 89.7 REMARK 620 6 HOH A 437 O 175.0 81.6 91.0 92.5 78.8 REMARK 620 N 1 2 3 4 5 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 K A 304 K REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 164 O REMARK 620 2 THR A 164 OG1 67.8 REMARK 620 3 THR A 180 OG1 65.8 103.2 REMARK 620 4 ASN A 182 O 93.3 158.2 77.1 REMARK 620 5 ASN A 182 OD1 135.8 134.4 71.2 66.8 REMARK 620 6 ILE A 185 O 93.5 89.6 148.2 80.4 119.4 REMARK 620 7 ASP A 187 OD1 127.0 59.2 126.6 137.9 87.2 85.0 REMARK 620 N 1 2 3 4 5 6 DBREF 7S10 A 2 249 UNP Q43758 Q43758_SOYBN 2 249 SEQADV 7S10 MET A 160 UNP Q43758 SER 160 ENGINEERED MUTATION SEQADV 7S10 MET A 203 UNP Q43758 LEU 203 ENGINEERED MUTATION SEQADV 7S10 MET A 204 UNP Q43758 GLN 204 ENGINEERED MUTATION SEQRES 1 A 248 GLY LYS SER TYR PRO THR VAL SER ALA ASP TYR GLN LYS SEQRES 2 A 248 ALA VAL GLU LYS ALA LYS LYS LYS LEU ARG GLY PHE ILE SEQRES 3 A 248 ALA GLU LYS ARG CYS ALA PRO LEU MET LEU ARG LEU ALA SEQRES 4 A 248 TRP HIS SER ALA GLY THR PHE ASP LYS GLY THR LYS THR SEQRES 5 A 248 GLY GLY PRO PHE GLY THR ILE LYS HIS PRO ALA GLU LEU SEQRES 6 A 248 ALA HIS SER ALA ASN ASN GLY LEU ASP ILE ALA VAL ARG SEQRES 7 A 248 LEU LEU GLU PRO LEU LYS ALA GLU PHE PRO ILE LEU SER SEQRES 8 A 248 TYR ALA ASP PHE TYR GLN LEU ALA GLY VAL VAL ALA VAL SEQRES 9 A 248 GLU VAL THR GLY GLY PRO GLU VAL PRO PHE HIS PRO GLY SEQRES 10 A 248 ARG GLU ASP LYS PRO GLU PRO PRO PRO GLU GLY ARG LEU SEQRES 11 A 248 PRO ASP ALA THR LYS GLY SER ASP HIS LEU ARG ASP VAL SEQRES 12 A 248 PHE GLY LYS ALA MET GLY LEU THR ASP GLN ASP ILE VAL SEQRES 13 A 248 ALA LEU MET GLY GLY HIS THR ILE GLY ALA ALA HIS LYS SEQRES 14 A 248 GLU ARG SER GLY PHE GLU GLY PRO TRP THR SER ASN PRO SEQRES 15 A 248 LEU ILE PHE ASP ASN SER TYR PHE THR GLU LEU LEU SER SEQRES 16 A 248 GLY GLU LYS GLU GLY LEU MET MET LEU PRO SER ASP LYS SEQRES 17 A 248 ALA LEU LEU SER ASP PRO VAL PHE ARG PRO LEU VAL ASP SEQRES 18 A 248 LYS TYR ALA ALA ASP GLU ASP ALA PHE PHE ALA ASP TYR SEQRES 19 A 248 ALA GLU ALA HIS GLN LYS LEU SER GLU LEU GLY PHE ALA SEQRES 20 A 248 ASP HET HEM A 301 43 HET SO4 A 302 5 HET SO4 A 303 5 HET K A 304 1 HETNAM HEM PROTOPORPHYRIN IX CONTAINING FE HETNAM SO4 SULFATE ION HETNAM K POTASSIUM ION HETSYN HEM HEME FORMUL 2 HEM C34 H32 FE N4 O4 FORMUL 3 SO4 2(O4 S 2-) FORMUL 5 K K 1+ FORMUL 6 HOH *348(H2 O) HELIX 1 AA1 SER A 9 ARG A 31 1 23 HELIX 2 AA2 CYS A 32 GLY A 45 1 14 HELIX 3 AA3 GLY A 58 LYS A 61 5 4 HELIX 4 AA4 HIS A 62 ALA A 67 1 6 HELIX 5 AA5 HIS A 68 ASN A 72 5 5 HELIX 6 AA6 GLY A 73 GLU A 87 1 15 HELIX 7 AA7 SER A 92 THR A 108 1 17 HELIX 8 AA8 GLY A 137 GLY A 146 1 10 HELIX 9 AA9 THR A 152 GLY A 161 1 10 HELIX 10 AB1 GLY A 162 ILE A 165 5 4 HELIX 11 AB2 ASN A 188 GLY A 197 1 10 HELIX 12 AB3 LEU A 205 ASP A 214 1 10 HELIX 13 AB4 VAL A 216 ASP A 227 1 12 HELIX 14 AB5 ASP A 227 GLU A 244 1 18 SHEET 1 AA1 2 ALA A 167 ALA A 168 0 SHEET 2 AA1 2 GLY A 177 PRO A 178 -1 O GLY A 177 N ALA A 168 LINK NE2 HIS A 163 FE HEM A 301 1555 1555 2.15 LINK O THR A 164 K K A 304 1555 1555 2.63 LINK OG1 THR A 164 K K A 304 1555 1555 3.25 LINK OG1 THR A 180 K K A 304 1555 1555 3.27 LINK O ASN A 182 K K A 304 1555 1555 2.74 LINK OD1 ASN A 182 K K A 304 1555 1555 2.80 LINK O ILE A 185 K K A 304 1555 1555 2.52 LINK OD1 ASP A 187 K K A 304 1555 1555 3.41 LINK FE HEM A 301 O HOH A 437 1555 1555 2.09 CRYST1 82.644 82.644 75.322 90.00 90.00 90.00 P 42 21 2 8 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 0.012100 0.000000 0.000000 0.00000 SCALE2 0.000000 0.012100 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013276 0.00000