1jd2
From Proteopedia
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Crystal Structure of the yeast 20S Proteasome:TMC-95A complex: A non-covalent Proteasome Inhibitor
Overview
The 20 S proteasome core particle (CP), a multicatalytic protease, is, involved in a variety of biologically important processes, including, immune response, cell-cycle control, metabolic adaptation, stress response, and cell differentiation. Therefore, selective inhibition of the CP will, be one possible way to influence these essential pathways. Recently, a new, class of specific proteasome inhibitors, TMC-95s, was investigated and we, now present a biochemical and crystallographic characterisation of the, yeast proteasome core particle in complex with the natural product, TMC-95A. This unusual heterocyclic compound specifically blocks the active, sites of CPs non-covalently, without modifying the nucleophilic Thr1, residue. The inhibitor is bound to the CP by specific hydrogen bonds with, the main-chain atoms of the protein. Analysis of the crystal structure of, the complex has revealed which portions of TMC-95s are essential for, binding to the proteasome. This will form the basis for the development of, synthetic selective proteasome inhibitors as promising candidates for, anti-tumoral or anti-inflammatory drugs.
About this Structure
1JD2 is a Protein complex structure of sequences from Saccharomyces cerevisiae with MG and 95A as ligands. Active as Proteasome endopeptidase complex, with EC number 3.4.25.1 Full crystallographic information is available from OCA.
Reference
Crystal structure of the 20 S proteasome:TMC-95A complex: a non-covalent proteasome inhibitor., Groll M, Koguchi Y, Huber R, Kohno J, J Mol Biol. 2001 Aug 17;311(3):543-8. PMID:11493007
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