PDB Entry (1k2i)
PDB ID: 1k2i Resolution: 1.8 Å Exp. Method: X-RAY DIFFRACTION
PMID: 11846564 DOI: 10.1006/jmbi.2001.5148
Protein
Protein Name: Chymotrypsinogen A
Uniprot ID/ACC: P00766 (CTRA_BOVIN) Organism: Bos taurus (Bovine)
Gene Symbol: - Gene ID: -
Protein Class: HYDROLASE
Ligand
Ligand Name:   7-hydroxycoumarin
Canonical SMILES:   Oc(c1)ccc(c12)ccc(o2)=O
Standard InChI:   InChI=1S/C9H6O3/c10-7-3-1-6-2-4-9(11)12-8(6)5-7/h1-5,10H
HET Code:   SN1 PubChem:   5281426
DrugBank:   - ChEMBL:   CHEMBL51628
Molecular Formula:   C9H6O3 Mol. Weight:   162.0317 logP:   1.4986
HBD:   1 HBA:   3
#Rotatable Bonds:   0 TPSA:   50.44
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Lactone Addition SER 195 1 17.67 - Alpha-Pyrone
Binding Affinity
Database Name Value
PDBBind IC50 : 780000 nM