2mjp: Difference between revisions

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[[Image:2mjp.gif|left|200px]]
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[[Image:2mjp.png|left|200px]]


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{{STRUCTURE_2mjp|  PDB=2mjp  |  SCENE=  }}  
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'''STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226'''
===STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226===




==Overview==
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Almost half of the entire set of predicted genomic products from Methanococcus jannaschii are classified as functionally unknown hypothetical proteins. We present a structure-based identification of the biochemical function of a protein with an as yet unknown function from a M. jannaschii gene, Mj0226. The crystal structure of Mj0226 protein determined at 2.2 A resolution reveals that the protein is a homodimer and each monomer folds into an elongated alpha/beta structure of a new fold family. Comparisons of Mj0226 protein with protein structures in the database, however, indicate that one part of the protein is homologous to some of the nucleotide-binding proteins. Biochemical analysis shows that Mj0226 protein is a novel nucleotide triphosphatase that can efficiently hydrolyze nonstandard nucleotides such as XTP to XMP or ITP to IMP, but not the standard nucleotides, in the presence of Mg2+ or Mn2+ ions.
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==About this Structure==
==About this Structure==
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[[Category: Pyrophosphatase]]
[[Category: Pyrophosphatase]]
[[Category: Structural genomic]]
[[Category: Structural genomic]]
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Revision as of 23:40, 28 July 2008

File:2mjp.png

Template:STRUCTURE 2mjp

STRUCTURE-BASED IDENTIFICATION OF THE BIOCHEMICAL FUNCTION OF A HYPOTHETICAL PROTEIN FROM METHANOCOCCUS JANNASCHII:MJ0226

Template:ABSTRACT PUBMED 10404228

About this Structure

2MJP is a Single protein structure of sequence from Methanocaldococcus jannaschii. Full crystallographic information is available from OCA.

Reference

Structure-based identification of a novel NTPase from Methanococcus jannaschii., Hwang KY, Chung JH, Kim SH, Han YS, Cho Y, Nat Struct Biol. 1999 Jul;6(7):691-6. PMID:10404228

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