2c2g: Difference between revisions
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==About this Structure== | ==About this Structure== | ||
2C2G is a [[http://en.wikipedia.org/wiki/Single_protein Single protein]] structure of sequence from [[http://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]]. Active as [[http://en.wikipedia.org/wiki/ | 2C2G is a [[http://en.wikipedia.org/wiki/Single_protein Single protein]] structure of sequence from [[http://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]]. Active as [[http://en.wikipedia.org/wiki/Threonine_synthase Threonine synthase]], with EC number [[http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.2.3.1 4.2.3.1]]. Structure known Active Site: AC1. Full crystallographic information is available from [[http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2C2G OCA]]. | ||
==Reference== | ==Reference== | ||
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[[Category: Arabidopsis thaliana]] | [[Category: Arabidopsis thaliana]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Threonine synthase]] | |||
[[Category: Biou, V.]] | [[Category: Biou, V.]] | ||
[[Category: Dumas, R.]] | [[Category: Dumas, R.]] | ||
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[[Category: transit peptide]] | [[Category: transit peptide]] | ||
''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 10:47:55 2007'' | ||
Revision as of 11:43, 30 October 2007
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CRYSTAL STRUCTURE OF THREONINE SYNTHASE FROM ARABIDOPSIS THALIANA IN COMPLEX WITH ITS COFACTOR PYRIDOXAL PHOSPHATE
OverviewOverview
Threonine synthase (TS) is a fold-type II pyridoxal phosphate, (PLP)-dependent enzyme that catalyzes the ultimate step of threonine, synthesis in plants and microorganisms. Unlike the enzyme from, microorganisms, plant TS is activated by S-adenosylmethionine (AdoMet)., The mechanism of activation has remained unknown up to now. We report here, the crystallographic structures of Arabidopsis thaliana TS in complex with, PLP (aTS) and with PLP and AdoMet (aTS-AdoMet), which show with atomic, detail how AdoMet activates TS. The aTS structure reveals a PLP, orientation never previously observed for a type II PLP-dependent enzyme, and explains the low activity of plant TS in the absence of its allosteric, activator. The aTS-AdoMet structure shows that activation of the enzyme, upon AdoMet ... [(full description)]
About this StructureAbout this Structure
2C2G is a [Single protein] structure of sequence from [Arabidopsis thaliana]. Active as [Threonine synthase], with EC number [4.2.3.1]. Structure known Active Site: AC1. Full crystallographic information is available from [OCA].
ReferenceReference
Allosteric threonine synthase. Reorganization of the pyridoxal phosphate site upon asymmetric activation through S-adenosylmethionine binding to a novel site., Mas-Droux C, Biou V, Dumas R, J Biol Chem. 2006 Feb 24;281(8):5188-96. Epub 2005 Nov 29. PMID:16319072
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