Structure of PDB 1ht8 Chain B Binding Site BS01

Receptor Information
>1ht8 Chain B (length=551) Species: 9940 (Ovis aries) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
VNPCCYYPCQHQGICVRFGLDRYQCDCTRTGYSGPNCTIPEIWTWLRTTL
RPSPSFIHFLLTHGRWLWDFVNATFIRDTLMRLVLTVRSNLIPSPPTYNI
AHDYISWESFSNVSYYTRILPSVPRDCPTPMGTKGKKQLPDAEFLSRRFL
LRRKFIPDPQGTNLMFAFFAQHFTHQFFKTSGKMGPGFTKALGHGVDLGH
IYGDNLERQYQLRLFKDGKLKYQMLNGEVYPPSVEEAPVLMHYPRGIPPQ
SQMAVGQEVFGLLPGLMLYATIWLREHNRVCDLLKAEHPTWGDEQLFQTA
RLILIGETIKIVIEEYVQQLSGYFLQLKFDPELLFGAQFQYRNRIAMEFN
QLYHWHPLMPDSFRVGPQDYSYEQFLFNTSMLVDYGVEALVDAFSRQPAG
RIGGGRNIDHHILHVAVDVIKESRVLRLQPFNEYRKRFGMKPYTSFQELT
GEKEMAAELEELYGDIDALEFYPGLLLEKCHPNSIFGESMIEMGAPFSLK
GLLGNPICSPEYWKASTFGGEVGFNLVKTATLKKLVCLNTKTCPYVSFHV
P
Ligand information
Ligand IDHEM
InChIInChI=1S/C34H34N4O4.Fe/c1-7-21-17(3)25-13-26-19(5)23(9-11-33(39)40)31(37-26)16-32-24(10-12-34(41)42)20(6)28(38-32)15-30-22(8-2)18(4)27(36-30)14-29(21)35-25;/h7-8,13-16H,1-2,9-12H2,3-6H3,(H4,35,36,37,38,39,40,41,42);/q;+2/p-2/b25-13-,26-13-,27-14-,28-15-,29-14-,30-15-,31-16-,32-16-;
InChIKeyKABFMIBPWCXCRK-RGGAHWMASA-L
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.6Cc1c2n3c(c1CCC(=O)O)C=C4C(=C(C5=[N]4[Fe]36[N]7=C(C=C8N6C(=C5)C(=C8C)C=C)C(=C(C7=C2)C)C=C)C)CCC(=O)O
CACTVS 3.385CC1=C(CCC(O)=O)C2=Cc3n4[Fe]5|6|N2=C1C=c7n5c(=CC8=N|6C(=Cc4c(C)c3CCC(O)=O)C(=C8C=C)C)c(C)c7C=C
ACDLabs 12.01C=1c3c(c(c4C=C5C(=C(C=6C=C7C(=C(C8=CC=2C(=C(C=1N=2[Fe](n34)(N5=6)N78)CCC(=O)O)C)\C=C)C)\C=C)C)C)CCC(=O)O
FormulaC34 H32 Fe N4 O4
NamePROTOPORPHYRIN IX CONTAINING FE;
HEME
ChEMBL
DrugBankDB18267
ZINC
PDB chain1ht8 Chain B Residue 601 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB1ht8 Structural analysis of NSAID binding by prostaglandin H2 synthase: time-dependent and time-independent inhibitors elicit identical enzyme conformations.
Resolution2.69 Å
Binding residue
(original residue number in PDB)		A202 Q203 H207 F210 T212 L295 N382 H386 H388 M391 I444 V447 D450
Binding residue
(residue number reindexed from 1)		A170 Q171 H175 F178 T180 L263 N350 H354 H356 M359 I412 V415 D418
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) Q203 H207 L384 Y385 H388 G526 S530
Catalytic site (residue number reindexed from 1) Q171 H175 L352 Y353 H356 G494 S498
Enzyme Commision number 1.14.99.1: prostaglandin-endoperoxide synthase.
Gene Ontology
Molecular Function
GO:0004601 peroxidase activity
GO:0004666 prostaglandin-endoperoxide synthase activity
GO:0016702 oxidoreductase activity, acting on single donors with incorporation of molecular oxygen, incorporation of two atoms of oxygen
GO:0020037 heme binding
GO:0042803 protein homodimerization activity
GO:0046872 metal ion binding
GO:0051213 dioxygenase activity
Biological Process
GO:0001516 prostaglandin biosynthetic process
GO:0006979 response to oxidative stress
GO:0008217 regulation of blood pressure
GO:0019371 cyclooxygenase pathway
GO:0098869 cellular oxidant detoxification
Cellular Component
GO:0005737 cytoplasm
GO:0005783 endoplasmic reticulum
GO:0005789 endoplasmic reticulum membrane
GO:0016020 membrane
GO:0043005 neuron projection
GO:0043231 intracellular membrane-bounded organelle

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Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1ht8, PDBe:1ht8, PDBj:1ht8
PDBsum1ht8
PubMed11318639
UniProtP05979|PGH1_SHEEP Prostaglandin G/H synthase 1 (Gene Name=PTGS1)

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