2i5b

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{{STRUCTURE_2i5b| PDB=2i5b | SCENE= }}
{{STRUCTURE_2i5b| PDB=2i5b | SCENE= }}
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'''The crystal structure of an ADP complex of Bacillus subtilis pyridoxal kinase provides evidence for the parralel emergence of enzyme activity during evolution'''
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===The crystal structure of an ADP complex of Bacillus subtilis pyridoxal kinase provides evidence for the parralel emergence of enzyme activity during evolution===
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==Overview==
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Pyridoxal kinase catalyses the phosphorylation of pyridoxal, pyridoxine and pyridoxamine to their 5' phosphates and plays an important role in the pyridoxal 5' phosphate salvage pathway. The crystal structure of a dimeric pyridoxal kinase from Bacillus subtilis has been solved in complex with ADP to 2.8 A resolution. Analysis of the structure suggests that binding of the nucleotide induces the ordering of two loops, which operate independently to close a flap on the active site. Comparisons with other ribokinase superfamily members reveal that B. subtilis pyridoxal kinase is more closely related in both sequence and structure to the family of HMPP kinases than to other pyridoxal kinases, suggesting that this structure represents the first for a novel family of "HMPP kinase-like" pyridoxal kinases. Moreover this further suggests that this enzyme activity has evolved independently on multiple occasions from within the ribokinase superfamily.
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(as it appears on PubMed at http://www.pubmed.gov), where 16978644 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16978644}}
==About this Structure==
==About this Structure==
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[[Category: Ribokinase superfamily]]
[[Category: Ribokinase superfamily]]
[[Category: Thid]]
[[Category: Thid]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 07:05:15 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 16:12:52 2008''

Revision as of 13:12, 27 July 2008

Image:2i5b.png

Template:STRUCTURE 2i5b

The crystal structure of an ADP complex of Bacillus subtilis pyridoxal kinase provides evidence for the parralel emergence of enzyme activity during evolution

Template:ABSTRACT PUBMED 16978644

About this Structure

2I5B is a Single protein structure of sequence from Bacillus subtilis. Full crystallographic information is available from OCA.

Reference

The crystal structure of an ADP complex of Bacillus subtilis pyridoxal kinase provides evidence for the parallel emergence of enzyme activity during evolution., Newman JA, Das SK, Sedelnikova SE, Rice DW, J Mol Biol. 2006 Oct 20;363(2):520-30. Epub 2006 Aug 12. PMID:16978644

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