Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1999-12-17
pubmed:abstractText
Rapamycin is a natural product with potent antifungal and immunosuppressive activities. Rapamycin binds to the FKBP12 prolyl isomerase, and the resulting protein-drug complex inhibits the TOR kinase homologs. Both the FKBP12 and the TOR proteins are highly conserved from yeast to man, and genetic and biochemical studies reveal that these proteins are the targets of rapamycin in vivo. Treatment of yeast or mammalian cells with rapamycin inhibits translational initiation of a subset of mRNAs and dramatically represses ribosomal mRNA and tRNA transcription. Furthermore, rapamycin exposure blocks cell cycle progression in the early G1 phase of the cell cycle, driving cells into a G0 state and, ultimately, triggering autophagy. Recent findings reveal that the upstream factors regulating the TOR signaling cascade are involved in detecting amino acids, nutrients, or growth factors. These findings indicate that the TOR proteins function in a signal transduction pathway that coordinates nutritional and mitogenic signals to control protein biosynthesis and degradation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0303-7207
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
155
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
135-42
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
TOR kinase homologs function in a signal transduction pathway that is conserved from yeast to mammals.
pubmed:affiliation
Department of Genetics, Duke University Medical Center, Durham, NC 27710, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review, Research Support, Non-U.S. Gov't