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1m5w

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[[Image:1m5w.gif|left|200px]]
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{{STRUCTURE_1m5w| PDB=1m5w | SCENE= }}
{{STRUCTURE_1m5w| PDB=1m5w | SCENE= }}
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'''1.96 A Crystal Structure of Pyridoxine 5'-Phosphate Synthase in Complex with 1-deoxy-D-xylulose phosphate'''
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===1.96 A Crystal Structure of Pyridoxine 5'-Phosphate Synthase in Complex with 1-deoxy-D-xylulose phosphate===
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==Overview==
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We report the 1.96 A crystal structure of pyridoxine 5'-phosphate synthase (PdxJ) in complex with 1-deoxy-D-xylulose phosphate (dXP). The octameric enzyme possesses eight distinct binding sites, and three different binding states are observed. The observation of these three states supports a mechanism in which precise conformational changes of a peptide loop and groups of active site residues modulate binding and specificity. The differences in protein conformation when one or two substrates are bound can be correlated with a condensation mechanism that leads productively to the formation of pyridoxine 5'-phosphate (PNP). "Snapshots" of the progression from the apo form to a singly occupied "transitional binding" state and, subsequently, to a fully occupied, reactive state are revealed and indicate how the enzyme structure can be related to a plausible catalytic mechanism and, moreover, to favorable energetics of reaction.
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(as it appears on PubMed at http://www.pubmed.gov), where 12269807 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12269807}}
==About this Structure==
==About this Structure==
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[[Category: Protein-substrate complex]]
[[Category: Protein-substrate complex]]
[[Category: Tim barrel]]
[[Category: Tim barrel]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 00:40:22 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 23:17:02 2008''

Revision as of 20:17, 2 July 2008

Image:1m5w.png

Template:STRUCTURE 1m5w

1.96 A Crystal Structure of Pyridoxine 5'-Phosphate Synthase in Complex with 1-deoxy-D-xylulose phosphate

Template:ABSTRACT PUBMED 12269807

About this Structure

1M5W is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Multistate binding in pyridoxine 5'-phosphate synthase: 1.96 A crystal structure in complex with 1-deoxy-D-xylulose phosphate., Yeh JI, Du S, Pohl E, Cane DE, Biochemistry. 2002 Oct 1;41(39):11649-57. PMID:12269807

Page seeded by OCA on Wed Jul 2 23:17:02 2008

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