Linked Life Data

10712680

Source:http://linkedlifedata.com/resource/pubmed/id/10712680

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2000-4-13
pubmed:abstractText
Aspergillus nidulans was used as a model organism to investigate the fungal propionate metabolism and the mechanism of growth inhibition by propionate. The fungus is able to grow slowly on propionate as sole carbon and energy source. Propionate is oxidized to pyruvate via the methylcitrate cycle. The key enzyme methylcitrate synthase was purified and the corresponding gene mcsA, which contains two introns, was cloned, sequenced and overexpressed in A. nidulans. The derived amino acid sequence of the enzyme shows more than 50% identity to those of most eukaryotic citrate synthases, but only 14% identity to the sequence of the recently detected bacterial methylcitrate synthase from Escherichia coli. A mcsA deletion strain was unable to grow on propionate. The inhibitory growth effect of propionate on glucose medium was enhanced in this strain, which led to the assumption that trapping of the available CoA as propionyl-CoA and/or the accumulating propionyl-CoA itself interferes with other biosynthetic pathways such as fatty acid and polyketide syntheses. In the wild-type strain, however, the predominant inhibitor may be methylcitrate. Propionate (100 mM) not only impaired hyphal growth of A. nidulans but also synthesis of the green polyketide-derived pigment of the conidia, whereas in the mutant pigmentation was abolished with 20 mM propionate.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0950-382X
pubmed:author
pubmed:issnType
Print
pubmed:volume
35
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
961-73
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Methylcitrate synthase from Aspergillus nidulans: implications for propionate as an antifungal agent.
pubmed:affiliation
Laboratorium für Mikrobiologie, Fachbereich Biologie, Philipps-Universität, D-35032 Marburg, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't