1jqp
From Proteopedia
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dipeptidyl peptidase I (cathepsin C), a tetrameric cysteine protease of the papain family
Overview
The crystal structure of mature dipeptidyl peptidase I reveals insight, into the unique tetrameric structure, substrate binding and activation of, this atypical papain family peptidase. Each subunit is composed of three, peptides. The heavy and light chains form the catalytic domain, which, adopts the papain fold. The residual pro-part forms a beta-barrel with the, carboxylate group of Asp1 pointing towards the substrate amino-terminus., The tetrameric structure appears to stabilize the association of the two, domains and encloses a 12700 A3 spherical cavity. The tetramer contains, six chloride ions, one buried in each S2 pocket and two at subunit, interfaces.
About this Structure
1JQP is a Single protein structure of sequence from Rattus norvegicus with NAG, CL and SO4 as ligands. Active as Dipeptidyl-peptidase I, with EC number 3.4.14.1 Full crystallographic information is available from OCA.
Reference
Tetrameric dipeptidyl peptidase I directs substrate specificity by use of the residual pro-part domain., Olsen JG, Kadziola A, Lauritzen C, Pedersen J, Larsen S, Dahl SW, FEBS Lett. 2001 Oct 12;506(3):201-6. PMID:11602245
Page seeded by OCA on Tue Nov 20 18:29:30 2007
Categories: Dipeptidyl-peptidase I | Rattus norvegicus | Single protein | Dahl, S.W. | Kadziola, A. | Larsen, S. | Lauritzen, C. | Olsen, J.G. | Pedersen, J. | CL | NAG | SO4 | Cathepsin c | Chloride | Cysteine protease | Dpp i | Papain | Tetramer
