1sjp

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[[Image:1sjp.gif|left|200px]]
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{{STRUCTURE_1sjp| PDB=1sjp | SCENE= }}
{{STRUCTURE_1sjp| PDB=1sjp | SCENE= }}
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'''Mycobacterium tuberculosis Chaperonin60.2'''
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===Mycobacterium tuberculosis Chaperonin60.2===
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==Overview==
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Chaperonin 60s are a ubiquitous class of proteins that promote folding and assembly of other cellular polypeptides in an ATP-dependent manner. The oligomeric state of chaperonin 60s has been shown to be crucial to their role as molecular chaperones. Chaperonin 60s are also known to be important stimulators of the immune system. Mycobacterium tuberculosis possesses a duplicate set of chaperonin 60s, both of which have been shown to be potent cytokine stimulators. The M. tuberculosis chaperonin 60s are present in the extracellular milieu at concentrations that are extremely low for the formation of an oligomer. Here we present the crystal structure of one of the chaperonin 60s of M. tuberculosis, also called Hsp65 or chaperonin 60.2, at 3.2-A resolution. We were able to crystallize the protein in its dimeric state. The unusual dimerization of the protein leads to exposure of certain hydrophobic patches on the surface of the protein, and we hypothesize that this might have relevance in binding to immunogenic peptides, as it does in the eukaryotic homologs.
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The line below this paragraph, {{ABSTRACT_PUBMED_15547284}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 15547284 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15547284}}
==About this Structure==
==About this Structure==
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==Reference==
==Reference==
Crystal structure of the 65-kilodalton heat shock protein, chaperonin 60.2, of Mycobacterium tuberculosis., Qamra R, Mande SC, J Bacteriol. 2004 Dec;186(23):8105-13. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15547284 15547284]
Crystal structure of the 65-kilodalton heat shock protein, chaperonin 60.2, of Mycobacterium tuberculosis., Qamra R, Mande SC, J Bacteriol. 2004 Dec;186(23):8105-13. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15547284 15547284]
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Mycobacterium tuberculosis GroEL homologues unusually exist as lower oligomers and retain the ability to suppress aggregation of substrate proteins., Qamra R, Srinivas V, Mande SC, J Mol Biol. 2004 Sep 10;342(2):605-17. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15327959 15327959]
[[Category: Mycobacterium tuberculosis]]
[[Category: Mycobacterium tuberculosis]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: Tb structural genomics consortium]]
[[Category: Tb structural genomics consortium]]
[[Category: Tbsgc]]
[[Category: Tbsgc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:47:17 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 06:46:59 2008''

Revision as of 03:47, 28 July 2008

Image:1sjp.png

Template:STRUCTURE 1sjp

Mycobacterium tuberculosis Chaperonin60.2

Template:ABSTRACT PUBMED 15547284

About this Structure

1SJP is a Single protein structure of sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA.

Reference

Crystal structure of the 65-kilodalton heat shock protein, chaperonin 60.2, of Mycobacterium tuberculosis., Qamra R, Mande SC, J Bacteriol. 2004 Dec;186(23):8105-13. PMID:15547284

Mycobacterium tuberculosis GroEL homologues unusually exist as lower oligomers and retain the ability to suppress aggregation of substrate proteins., Qamra R, Srinivas V, Mande SC, J Mol Biol. 2004 Sep 10;342(2):605-17. PMID:15327959

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