Structure of PDB 4q2k Chain A

Receptor sequence
>4q2kA (length=231) Species: 9913 (Bos taurus) [Search protein sequence]
CGVPAIQPVLIVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTA
AHCGVTTSDVVVAGEFDQGSSSEKIQKLKIAKVFKNSKNDITLLKLSTAA
SFSQTVSAVCLPSASDDFAAGTTCVTTGWGLTRYANTPDRLQQASLPLLS
NTNCKKYWGTKIKDAMICAGASGVSSCMGDSGGPLVCKKNGAWTLVGIVS
WGSSTCSTSTPGVYARVTALVNWVQQTLAAN
3D structure
PDB4q2k Macrocyclic protease inhibitors with reduced peptide character.
ChainA
Resolution2.2 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H57 D102 M192 G193 D194 S195 G196
Catalytic site (residue number reindexed from 1) H52 D90 M178 G179 D180 S181 G182
Enzyme Commision number 3.4.21.1: chymotrypsin.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 5BF A C191 S195 S214 W215 G216 S217 S218 C177 S181 S200 W201 G202 S203 S204 PDBbind-CN: -logKd/Ki=7.48,Ki=33nM
BS02 5BF A S186 T222 S223 S172 T208 S209 PDBbind-CN: -logKd/Ki=7.48,Ki=33nM
Gene Ontology
Molecular Function
GO:0004252 serine-type endopeptidase activity
GO:0005515 protein binding
GO:0008236 serine-type peptidase activity
GO:0097655 serpin family protein binding
Biological Process
GO:0006508 proteolysis
GO:0007586 digestion
Cellular Component
GO:0005576 extracellular region
GO:0097180 serine protease inhibitor complex

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4q2k, PDBe:4q2k, PDBj:4q2k
PDBsum4q2k
PubMed24903745
UniProtP00766|CTRA_BOVIN Chymotrypsinogen A

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