Structure of PDB 1kxn Chain A Binding Site BS01

Receptor Information
>1kxn Chain A (length=289) Species: 4932 (Saccharomyces cerevisiae) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
LVHVASVEKGRSYEDFQKVYNAIALKLREDDEYDNYIGYGPVLVRLAWHI
SGTWDKHDNTGGSYGGTYRFKKEFNDPSNAGLQNGFKFLEPIHKEFPWIS
SGDLFSLGGVTAVQEMQGPKIPWRCGRVDTPEDTTPDNGRLPDADKDAGY
VRTFFQRLNMNDREVVALMGAHALGKTHLKNSGYEGGGANNVFTNEFYLN
LLNEDWKLEKNDANNEQWDSKSGYMMLPTDYSLIQDPKYLSIVKEYANDQ
DKFFKDFSKAFEKLLENGITFPKDAPSPFIFKTLEEQGL
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 chain1kxn Chain A Residue 1 [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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PDB1kxn Excision of a proposed electron transfer pathway in cytochrome c peroxidase and its replacement by a ligand-binding channel.
Resolution1.8 Å
Binding residue
(original residue number in PDB)		P44 R48 W51 P145 D146 A147 L171 M172 A174 H175 G178 K179 T180 H181 N184 S185 L230
Binding residue
(residue number reindexed from 1)		P41 R45 W48 P142 D143 A144 L168 M169 A171 H172 G175 K176 T177 H178 N181 S182 L227
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) R48 H52 H175 D233
Catalytic site (residue number reindexed from 1) R45 H49 H172 D230
Enzyme Commision number 1.11.1.5: cytochrome-c peroxidase.
Gene Ontology
Molecular Function
GO:0004601 peroxidase activity
GO:0020037 heme binding
Biological Process
GO:0006979 response to oxidative stress
GO:0034599 cellular response to oxidative stress

View graph for
Molecular Function
View graph for
Biological Process
External links
PDB RCSB:1kxn, PDBe:1kxn, PDBj:1kxn
PDBsum1kxn
PubMed11967381
UniProtP00431|CCPR_YEAST Cytochrome c peroxidase, mitochondrial (Gene Name=CCP1)

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