1tm5: Difference between revisions

Revision as of 13:23, 29 July 2008

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File:1tm5.png

Template:STRUCTURE 1tm5

crystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 M59A mutantcrystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 M59A mutant

Template:ABSTRACT PUBMED 15504027

About this StructureAbout this Structure

1TM5 is a Protein complex structure of sequences from Bacillus amyloliquefaciens and Hordeum vulgare subsp. vulgare. Full crystallographic information is available from OCA.

ReferenceReference

Binding, proteolytic, and crystallographic analyses of mutations at the protease-inhibitor interface of the subtilisin BPN'/chymotrypsin inhibitor 2 complex., Radisky ES, Kwan G, Karen Lu CJ, Koshland DE Jr, Biochemistry. 2004 Nov 2;43(43):13648-56. PMID:15504027

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OCA

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-'''crystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 M59A mutant'''
+===crystal structure of the complex of subtilisin BPN' with chymotrypsin inhibitor 2 M59A mutant===
-==Overview==
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-A series of mutants of chymotrypsin inhibitor 2 (CI2), at residues that interact with the inhibited enzyme subtilisin BPN', were studied to determine the relative importance of intermolecular contacts on either side of the scissile bond. Mutants were tested for inhibition of subtilisin, rates of hydrolysis by subtilisin, and ability to acylate subtilisin. Additionally, crystal structures of the mutant CI2 complexes with subtilisin were obtained. Ordered water molecules were found to play an important role in inhibitor recognition, and features of the crystal structures, in combination with biochemical data, support a transition-state stabilization role for the P(1) residue in subtilisin catalysis. Consistent with the proposed mechanism of inhibition, in which rapid acylation is followed by religation, leaving-group contacts with the enzyme were found to be more critical determinants of inhibition than acylating-group contacts in the mutants studied here.
+The line below this paragraph, {{ABSTRACT_PUBMED_15504027}}, adds the Publication Abstract to the page
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 [[Category: Inhibitor]]
 [[Category: Serine protease]]
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