Linked Life Data

10481048

Source:http://linkedlifedata.com/resource/pubmed/id/10481048

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1999-10-13
pubmed:databankReference
pubmed:abstractText
The heat shock protein (Hsp) HtpG is a member of the Hsp90 protein family. We cloned a single-copy gene encoding a homologue of HtpG from the unicellular cyanobacterium Synechococcus sp. PCC 7942. Sequence alignment with HtpGs from other prokaryotes revealed unique features in the cyanobacterial HtpG primary sequence. A monocistronic mRNA of the htpG gene increased transiently in response to heat shock. In order to elucidate the role of HtpG in vivo, we inactivated the htpG gene by targeted mutagenesis. Although the mutation did not affect the photoautotrophic growth at 30 and 42 degrees C, the mutant cells were unable to grow at 45 degrees C. They lost both basal and acquired thermotolerances. These results indicate that HtpG plays an essential role for the thermal stress management in cyanobacteria, the first such an example for either a photosynthetic or a prokaryotic organism.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0014-5793
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
458
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
117-23
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
HtpG is essential for the thermal stress management in cyanobacteria.
pubmed:affiliation
Department of Biochemistry and Molecular Biology, Saitama University, Urawa, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't