Structure of PDB 1kyo Chain C Binding Site BS03

Receptor Information
>1kyo Chain C (length=385) Species: 4932 (Saccharomyces cerevisiae) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
MAFRKSNVYLSLVNSYIIDSPQPSSINYWWNMGSLLGLCLVIQIVTGIFM
AMHYSSNIELAFSSVEHIMRDVHNGYILRYLHANGASFFFMVMFMHMAKG
LYYGSYRSPRVTLWNVGVIIFTLTIATAFLGYCCVYGQMSHWGATVITNL
FSAIPFVGNDIVSWLWGGFSVSNPTIQRFFALHYLVPFIIAAMVIMHLMA
LHIHGSSNPLGITGNLDRIPMHSYFIFKDLVTVFLFMLILALFVFYSPNT
LGHPDNYIPGNPLVTPASIVPEWYLLPFYAILRSIPDKLLGVITMFAAIL
VLLVLPFTDRSVVRGNTFKVLSKFFFFIFVFNFVLLGQIGACHVEVPYVL
MGQIATFIYFAYFLIIVPVISTIENVLFYIGRVNK
Ligand information
Ligand IDSMA
InChIInChI=1S/C30H42O7/c1-10-18(2)13-11-12-14-22(33-6)21(5)29(36-9)19(3)15-16-23-20(4)27(31)26-24(34-7)17-25(35-8)28(32)30(26)37-23/h10-14,17,19,21-22,29,32H,15-16H2,1-9H3/b13-11+,14-12?,18-10+/t19-,21+,22-,29-/m0/s1
InChIKeyUZHDGDDPOPDJGM-WPPYOTIYSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.2C/C=C(\C)/C=C/C=C[C@@H]([C@@H](C)[C@H]([C@@H](C)CCC1=C(C(=O)c2c(cc(c(c2O1)O)OC)OC)C)OC)OC
CACTVS 3.370CO[CH](C=CC=CC(C)=CC)[CH](C)[CH](OC)[CH](C)CCC1=C(C)C(=O)c2c(OC)cc(OC)c(O)c2O1
OpenEye OEToolkits 1.7.2CC=C(C)C=CC=CC(C(C)C(C(C)CCC1=C(C(=O)c2c(cc(c(c2O1)O)OC)OC)C)OC)OC
CACTVS 3.370CO[C@@H](\C=C\C=C\C(C)=C\C)[C@@H](C)[C@@H](OC)[C@@H](C)CCC1=C(C)C(=O)c2c(OC)cc(OC)c(O)c2O1
FormulaC30 H42 O7
NameSTIGMATELLIN A
ChEMBL
DrugBank
ZINC
PDB chain1kyo Chain C Residue 505 [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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PDB1kyo Crystal structure of the yeast cytochrome bc1 complex with its bound substrate cytochrome c.
Resolution2.97 Å
Binding residue
(original residue number in PDB)		I125 A126 F129 G143 V146 I147 L165 V270 P271 E272 Y279 M295 F296
Binding residue
(residue number reindexed from 1)		I125 A126 F129 G143 V146 I147 L165 V270 P271 E272 Y279 M295 F296
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) H202 S206 K228 D229 E272
Catalytic site (residue number reindexed from 1) H202 S206 K228 D229 E272
Enzyme Commision number 7.1.1.8: quinol--cytochrome-c reductase.
Gene Ontology
Molecular Function
GO:0008121 ubiquinol-cytochrome-c reductase activity
GO:0009055 electron transfer activity
GO:0016491 oxidoreductase activity
GO:0046872 metal ion binding
Biological Process
GO:0006122 mitochondrial electron transport, ubiquinol to cytochrome c
GO:0009060 aerobic respiration
GO:0022904 respiratory electron transport chain
GO:0045333 cellular respiration
GO:1902600 proton transmembrane transport
Cellular Component
GO:0005739 mitochondrion
GO:0005743 mitochondrial inner membrane
GO:0016020 membrane
GO:0045275 respiratory chain complex III

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:1kyo, PDBe:1kyo, PDBj:1kyo
PDBsum1kyo
PubMed11880631
UniProtP00163|CYB_YEAST Cytochrome b (Gene Name=COB)

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