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1iho

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{{STRUCTURE_1iho| PDB=1iho | SCENE= }}
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'''CRYSTAL APO-STRUCTURE OF PANTOTHENATE SYNTHETASE FROM E. COLI'''
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===CRYSTAL APO-STRUCTURE OF PANTOTHENATE SYNTHETASE FROM E. COLI===
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==Overview==
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BACKGROUND: Pantothenate synthetase (EC 6.3.2.1) is the last enzyme of the pathway of pantothenate (vitamin B(5)) synthesis. It catalyzes the condensation of pantoate with beta-alanine in an ATP-dependent reaction. RESULTS: We describe the overexpression, purification, and crystal structure of recombinant pantothenate synthetase from E. coli. The structure was solved by a selenomethionine multiwavelength anomalous dispersion experiment and refined against native data to a final R(cryst) of 22.6% (R(free) = 24.9%) at 1.7 A resolution. The enzyme is dimeric, with two well-defined domains per protomer: the N-terminal domain, a Rossmann fold, contains the active site cavity, with the C-terminal domain forming a hinged lid. CONCLUSIONS: The N-terminal domain is structurally very similar to class I aminoacyl-tRNA synthetases and is thus a member of the cytidylyltransferase superfamily. This relationship has been used to suggest the location of the ATP and pantoate binding sites and the nature of hinge bending that leads to the ternary enzyme-pantoate-ATP complex.
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(as it appears on PubMed at http://www.pubmed.gov), where 11377204 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11377204}}
==About this Structure==
==About this Structure==
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[[Category: Multidomain]]
[[Category: Multidomain]]
[[Category: Rossman fold]]
[[Category: Rossman fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 20:00:39 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 12:12:47 2008''

Revision as of 09:12, 1 July 2008

Image:1iho.png

Template:STRUCTURE 1iho

CRYSTAL APO-STRUCTURE OF PANTOTHENATE SYNTHETASE FROM E. COLI

Template:ABSTRACT PUBMED 11377204

About this Structure

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

Reference

The crystal structure of E. coli pantothenate synthetase confirms it as a member of the cytidylyltransferase superfamily., von Delft F, Lewendon A, Dhanaraj V, Blundell TL, Abell C, Smith AG, Structure. 2001 May 9;9(5):439-50. PMID:11377204

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