rdf:type |
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lifeskim:mentions |
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pubmed:issue |
12
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pubmed:dateCreated |
2001-6-25
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pubmed:abstractText |
Mitochondrial chaperonins are necessary for the folding of newly imported and stress-denatured mitochondrial proteins. The goal of this study was to investigate the structure and function of the mammalian mitochondrial chaperonin system. We present evidence that the 60 kDa chaperonin (mt-cpn60) exists in solution in dynamic equilibrium between monomers, heptameric single rings and double-ringed tetradecamers. In the presence of ATP and the 10 kDa cochaperonin (mt-cpn10), the formation of a double ring is favored. ADP at very high concentrations does not inhibit malate dehydrogenase refolding or ATP hydrolysis by mt-cpn60 in the presence of mt-cpn10. We propose that the cis (mt-cpn60)14.nucleotide.(mt-cpn10)7 complex is not a stable species and does not bind ADP effectively at its trans binding site.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Jun
|
pubmed:issn |
0014-2956
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:volume |
268
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3465-72
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pubmed:dateRevised |
2007-7-23
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pubmed:meshHeading |
pubmed-meshheading:11422376-Adenosine Diphosphate,
pubmed-meshheading:11422376-Adenosine Triphosphatases,
pubmed-meshheading:11422376-Adenosine Triphosphate,
pubmed-meshheading:11422376-Animals,
pubmed-meshheading:11422376-Chaperonin 10,
pubmed-meshheading:11422376-Chaperonin 60,
pubmed-meshheading:11422376-Malate Dehydrogenase,
pubmed-meshheading:11422376-Microscopy, Electron,
pubmed-meshheading:11422376-Mitochondria, Heart,
pubmed-meshheading:11422376-Protein Denaturation,
pubmed-meshheading:11422376-Structure-Activity Relationship,
pubmed-meshheading:11422376-Swine,
pubmed-meshheading:11422376-Urea
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pubmed:year |
2001
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pubmed:articleTitle |
The effect of nucleotides and mitochondrial chaperonin 10 on the structure and chaperone activity of mitochondrial chaperonin 60.
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pubmed:affiliation |
Department of Biochemistry, George S. Wise Faculty of Life Sciences, Tel-Aviv University, Israel.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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