2cdq
From Proteopedia
Line 35: | Line 35: | ||
[[Category: transferase]] | [[Category: transferase]] | ||
- | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Oct 30 | + | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Oct 30 17:05:25 2007'' |
Revision as of 15:00, 30 October 2007
|
CRYSTAL STRUCTURE OF ARABIDOPSIS THALIANA ASPARTATE KINASE COMPLEXED WITH LYSINE AND S-ADENOSYLMETHIONINE
Overview
Asp kinase catalyzes the first step of the Asp-derived essential amino, acid pathway in plants and microorganisms. Depending on the source, organism, this enzyme contains up to four regulatory ACT domains and, exhibits several isoforms under the control of a great variety of, allosteric effectors. We report here the dimeric structure of a Lys and, S-adenosylmethionine-sensitive Asp kinase isoform from Arabidopsis, thaliana in complex with its two inhibitors. This work reveals the, structure of an Asp kinase and an enzyme containing two ACT domains, cocrystallized with its effectors. Only one ACT domain (ACT1) is, implicated in effector binding. A loop involved in the binding of Lys and, S-adenosylmethionine provides an explanation for the synergistic, inhibition by these effectors. The ... [(full description)]
About this Structure
2CDQ is a [Single protein] structure of sequence from [Arabidopsis thaliana] with TAR, SAM and LYS as [ligands]. Active as [Aspartate kinase], with EC number [2.7.2.4]. Structure known Active Site: AC1. Full crystallographic information is available from [OCA].
Reference
A novel organization of ACT domains in allosteric enzymes revealed by the crystal structure of Arabidopsis aspartate kinase., Mas-Droux C, Curien G, Robert-Genthon M, Laurencin M, Ferrer JL, Dumas R, Plant Cell. 2006 Jul;18(7):1681-92. Epub 2006 May 26. PMID:16731588
Page seeded by OCA on Tue Oct 30 17:05:25 2007
Categories: Arabidopsis thaliana | Aspartate kinase | Single protein | Curien, G. | Dumas, R. | Ferrer, J.L. | Laurencin, M. | Mas-Droux, C. | Robert-Genthon, M. | LYS | SAM | TAR | Act domain | Allosteric effector | Allostery | Amino acid biosynthesis | Amino acid metabolism | Lysine | Plant | S-adenosylmethionine | Transferase