Linked Life Data

2274663

Source:http://linkedlifedata.com/resource/pubmed/id/2274663

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1991-2-28
pubmed:abstractText
L-leucine entrance into Saccharomyces cerevisiae is mediated by the general amino acid permease, GAP and two transport systems, S1 and S2, kinetically characterized. S1 is a high-affinity, low-velocity transport system, operating at lower L-leucine external concentration (0.05-0.1 mM), while S2 is a low-affinity, high-velocity transport system, operating at higher L-leucine external concentration (1.0 mM). In cells grown in minimal medium containing ammonium as sole nitrogen source the values of L-leucine entrance and uptake are smaller than those in cells grown in L-proline containing medium. When GAP is repressed by ammonium, L-leucine entrance is mediate by systems S1 and S2. Both systems are inhibited by ammonium. When GAP is derepressed, in cells grown in L-proline medium, L-leucine is transported by systems S1 and GAP (lower L-leucine external concentration), and mainly by S2 (higher L-leucine external concentration). GAP is the largest system inhibited by ammonium.
pubmed:language
spa
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0325-7541
pubmed:author
pubmed:issnType
Print
pubmed:volume
22
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
7-16
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:articleTitle
[Effect of ammonium ions on the uptake of L-leucine in Saccharomyces cerevisiae. Repression and inhibition of transport systems].
pubmed:affiliation
Departamento de Bioquímica, Facultad de Medicina, Universidad de Buenos Aires, Argentina.
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't