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spinqualitylabelsall models PDB ID 1gtl Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image
, resolution 2.8Å
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Ligands:	, and
Coordinates:	save as pdb, mmCIF, xml

THE THERMOSTABLE SERINE-CARBOXYL TYPE PROTEINASE, KUMAMOLYSIN- COMPLEX WITH AC-ILE-PRO-PHE-CHO

Overview

Kumamolysin is a thermostable endopeptidase from Bacillus novosp. MN-32, exhibiting maximal proteolytic activity around pH 3. It belongs to the newly identified family of serine-carboxyl proteinases, which also includes CLN2, a human lysosomal homolog recently implicated in a fatal neurodegenerative disease. Kumamolysin and its complexes with two aldehyde inhibitors were crystallized, and their three-dimensional structures were solved and refined with X-ray data to 1.4 A resolution. As its Pseudomonas homolog, kumamolysin exhibits a Ser/Glu/Asp catalytic triad with particularly short interconnecting hydrogen bonds and an oxyanion hole enabling the reactive serine to attack substrate peptide bonds at quite acidic pH. An additional Glu/Trp pair, unique to kumamolysin, might further facilitate proton delocalization during nucleophilic attack, in particular at high temperature.

About this Structure

1GTL is a Single protein structure of sequence from Bacteria. Full crystallographic information is available from OCA.

Reference

The 1.4 a crystal structure of kumamolysin: a thermostable serine-carboxyl-type proteinase., Comellas-Bigler M, Fuentes-Prior P, Maskos K, Huber R, Oyama H, Uchida K, Dunn BM, Oda K, Bode W, Structure. 2002 Jun;10(6):865-76. PMID:12057200

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