Linked Life Data

2105956

Source:http://linkedlifedata.com/resource/pubmed/id/2105956

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1990-3-28
pubmed:abstractText
Two transport systems for L-arginine were evident in Anabaena sp. strain PCC 7120: a high-affinity one (Km, 1.7 microM) that accumulated arginine within the cells through an energy-requiring process and another one that exhibited low affinity for L-arginine (Km, 0.75 mM) and was unable to accumulate the substrate. Both systems were inhibited by L-canavanine, L-lysine, and L-ornithine. Two systems were also evident for L-lysine uptake (Km, 1.9 and 110 microM, respectively). After selection for resistance to canavanine or hydroxylysine, independent mutants were isolated which were impaired in the high-affinity uptake of arginine and lysine. A common permease appears, therefore, to be involved in the high-affinity transport of these basic amino acids. Both the high- and the low-affinity systems can contribute to the growth of Anabaena sp. on L-arginine. However, arginine did not effectively repress either nitrogenase or nitrate reductase.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
5
pubmed:volume
265
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3931-5
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Transport of basic amino acids by the dinitrogen-fixing cyanobacterium Anabaena PCC 7120.
pubmed:affiliation
Instituto de Bioquímica Vegetal y Fotosintesis, Universidad de Sevilla, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't