Structure of PDB 1afq Chain B

Receptor sequence
>1afqB (length=131) Species: 9913 (Bos taurus) [Search protein sequence]
IVNGEEAVPGSWPWQVSLQDKTGFHFCGGSLINENWVVTAAHCGVTTSDV
VVAGEFDQGSSSEKIQKLKIAKVFKNSKYNSLTINNDITLLKLSTAASFS
QTVSAVCLPSASDDFAAGTTCVTTGWGLTRY
3D structure
PDB1afq X-ray crystal structure of a dipeptide-chymotrypsin complex in an inhibitory interaction.
ChainB
Resolution1.8 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
Catalytic site (residue number reindexed from 1) H42 D87
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 peptide B V23 S26 W27 W29 Q116 A120 C122 V8 S11 W12 W14 Q101 A105 C107
BS02 0FG B C122 L123 P124 C107 L108 P109
BS03 0FG B H57 I99 H42 I84
Gene Ontology
Molecular Function
GO:0004252 serine-type endopeptidase activity
Biological Process
GO:0006508 proteolysis

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Molecular Function
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Biological Process
External links
PDB RCSB:1afq, PDBe:1afq, PDBj:1afq
PDBsum1afq
PubMed9692896
UniProtP00766|CTRA_BOVIN Chymotrypsinogen A

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