Structure of PDB 3s68 Chain A Binding Site BS02

Receptor Information
>3s68 Chain A (length=213) Species: 10116 (Rattus norvegicus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
DTKEQRILRYVQQNAKPGDPQSVLEAIDTYCTQKEWAMNVGDAKGQIMDA
VIREYSPSLVLELGAYCGYSAVRMARLLQPGARLLTMEMNPDYAAITQQM
LNFAGLQDKVTILNGASQDLIPQLKKKYDVDTLDMVFLDHWKDRYLPDTL
LLEKCGLLRKGTVLLADNVIVPGTPDFLAYVRGSSSFECTHYSSYLEYMK
VVDGLEKAIYQGP
Ligand information
Ligand IDTCW
InChIInChI=1S/C14H11NO5/c1-8-2-4-9(5-3-8)13(17)10-6-11(15(19)20)14(18)12(16)7-10/h2-7,16,18H,1H3
InChIKeyMIQPIUSUKVNLNT-UHFFFAOYSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.2Cc1ccc(cc1)C(=O)c2cc(c(c(c2)O)O)[N+](=O)[O-]
ACDLabs 12.01[O-][N+](=O)c2cc(C(=O)c1ccc(cc1)C)cc(O)c2O
CACTVS 3.370Cc1ccc(cc1)C(=O)c2cc(O)c(O)c(c2)[N+]([O-])=O
FormulaC14 H11 N O5
NameTolcapone;
(3,4-dihydroxy-5-nitrophenyl)(4-methylphenyl)methanone
ChEMBLCHEMBL1324
DrugBankDB00323
ZINCZINC000035342789
PDB chain3s68 Chain A Residue 227 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB3s68 Catechol-O-methyltransferase in complex with substituted 3'-deoxyribose bisubstrate inhibitors
Resolution1.85 Å
Binding residue
(original residue number in PDB)		W38 W143 K144 N170 P174 E199
Binding residue
(residue number reindexed from 1)		W36 W141 K142 N168 P172 E197
Annotation score1
Binding affinityPDBbind-CN: -logKd/Ki=8.66,IC50=2.2nM
BindingDB: IC50=2.2nM
Enzymatic activity
Catalytic site (original residue number in PDB) D141 K144 D169 N170 E199
Catalytic site (residue number reindexed from 1) D139 K142 D167 N168 E197
Enzyme Commision number 2.1.1.6: catechol O-methyltransferase.
Gene Ontology
Molecular Function
GO:0000287 magnesium ion binding
GO:0008171 O-methyltransferase activity
GO:0016206 catechol O-methyltransferase activity
Biological Process
GO:0006584 catecholamine metabolic process

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Molecular Function
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Biological Process
External links
PDB RCSB:3s68, PDBe:3s68, PDBj:3s68
PDBsum3s68
PubMed22349227
UniProtP22734|COMT_RAT Catechol O-methyltransferase (Gene Name=Comt)

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