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Design, synthesis, and activity of analogues of phosphinothricin as inhibitors of glutamine synthetase.

Abstract：

:A new group of potent inhibitors of glutamine synthetase was designed and synthesized. The X-ray structure of bacterial glutamine synthetase complexed with phosphinothricin was used for computer-aided structure-based design of the inhibitors, in which the methyl group of phosphinothricin was chosen as the modification site. Amino and hydroxyl moieties were introduced into the phosphinic acid portion of the lead molecule to interact with ammonium binding site in the active cleft of the enzyme. Designed compounds were synthesized in enantiomerically pure form analogous to l-glutamic acid. In vitro kinetic studies with Escherichia coli glutamine synthetase confirmed the biological activity of the designed inhibitors, which with K(i) values in the micromolar range (K(i) = 0.59 microM for the most potent compound 2) appear to be slightly weaker inhibitors or equipotent to phosphinothricin.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Berlicki Ł,Obojska A,Forlani G,Kafarski P

doi

10.1021/jm050474e

keywords:

subject

Has Abstract

pub_date

2005-10-06 00:00:00

pages

6340-9

issue

20

eissn

0022-2623

issn

1520-4804

journal_volume

48

pub_type

杂志文章

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