rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
1992-11-13
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pubmed:databankReference |
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pubmed:abstractText |
The function of the yeast SSB 70 kd heatshock proteins (hsp70s) was investigated by a variety of approaches. The SSB hsp70s (Ssb1/2p) are associated with translating ribosomes. This association is disrupted by puromycin, suggesting that Ssb1/2p may bind directly to the nascent polypeptide. Mutant ssb1 ssb2 strains grow slowly, contain a low number of translating ribosomes, and are hypersensitive to several inhibitors of protein synthesis. The slow growth phenotype of ssb1 ssb2 mutants is suppressed by increased copy number of a gene encoding a novel translation elongation factor 1 alpha (EF-1 alpha)-like protein. We suggest that cytosolic hsp70 aids in the passage of the nascent polypeptide chain through the ribosome in a manner analogous to the role played by organelle-localized hsp70 in the transport of proteins across membranes.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0092-8674
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:day |
2
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pubmed:volume |
71
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
97-105
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pubmed:dateRevised |
2009-5-19
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pubmed:meshHeading |
pubmed-meshheading:1394434-Amino Acid Sequence,
pubmed-meshheading:1394434-Base Sequence,
pubmed-meshheading:1394434-Fungal Proteins,
pubmed-meshheading:1394434-GTP-Binding Proteins,
pubmed-meshheading:1394434-HSP70 Heat-Shock Proteins,
pubmed-meshheading:1394434-Heat-Shock Proteins,
pubmed-meshheading:1394434-Molecular Sequence Data,
pubmed-meshheading:1394434-Peptide Elongation Factor 1,
pubmed-meshheading:1394434-Peptide Elongation Factors,
pubmed-meshheading:1394434-Protein Biosynthesis,
pubmed-meshheading:1394434-Puromycin,
pubmed-meshheading:1394434-Ribonucleoproteins,
pubmed-meshheading:1394434-Ribosomes,
pubmed-meshheading:1394434-Saccharomyces cerevisiae,
pubmed-meshheading:1394434-Saccharomyces cerevisiae Proteins
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pubmed:year |
1992
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pubmed:articleTitle |
The translation machinery and 70 kd heat shock protein cooperate in protein synthesis.
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pubmed:affiliation |
Department of Biomolecular Chemistry, University of Wisconsin-Madison 53706.
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pubmed:publicationType |
Journal Article
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