1qb4

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{{STRUCTURE_1qb4| PDB=1qb4 | SCENE= }}
{{STRUCTURE_1qb4| PDB=1qb4 | SCENE= }}
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'''CRYSTAL STRUCTURE OF MN(2+)-BOUND PHOSPHOENOLPYRUVATE CARBOXYLASE'''
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===CRYSTAL STRUCTURE OF MN(2+)-BOUND PHOSPHOENOLPYRUVATE CARBOXYLASE===
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==Overview==
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We have determined the crystal structure of Mn2+-bound Escherichia coli phosphoenolpyruvate carboxylase (PEPC) using X-ray diffraction at 2.6 A resolution, and specified the location of enzyme-bound Mn2+, which is essential for catalytic activity. The electron density map reveals that Mn2+ is bound to the side chain oxygens of Glu-506 and Asp-543, and located at the top of the alpha/beta barrel in PEPC. The coordination sphere of Mn2+ observed in E. coli PEPC is similar to that of Mn2+ found in the pyruvate kinase structure. The model study of Mn2+-bound PEPC complexed with phosphoenolpyruvate (PEP) reveals that the side chains of Arg-396, Arg-581 and Arg-713 could interact with PEP.
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{{ABSTRACT_PUBMED_10481043}}
==About this Structure==
==About this Structure==
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[[Category: Yoshinaga, T.]]
[[Category: Yoshinaga, T.]]
[[Category: Alpha beta barrel]]
[[Category: Alpha beta barrel]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:05:22 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 13:22:54 2008''

Revision as of 10:22, 28 July 2008

Image:1qb4.png

Template:STRUCTURE 1qb4

CRYSTAL STRUCTURE OF MN(2+)-BOUND PHOSPHOENOLPYRUVATE CARBOXYLASE

Template:ABSTRACT PUBMED 10481043

About this Structure

1QB4 is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Plausible phosphoenolpyruvate binding site revealed by 2.6 A structure of Mn2+-bound phosphoenolpyruvate carboxylase from Escherichia coli., Matsumura H, Terada M, Shirakata S, Inoue T, Yoshinaga T, Izui K, Kai Y, FEBS Lett. 1999 Sep 17;458(2):93-6. PMID:10481043

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