Linked Life Data

19915845

Source:http://linkedlifedata.com/resource/pubmed/id/19915845

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2010-1-21
pubmed:abstractText
The roles of the Gbetagamma subunits of the opportunistic human pathogen Aspergillus fumigatus were investigated. The predicted AfuSfaD (Gbeta) protein consists of 353 amino acids and shows 94-98% similarity with other Aspergillus Gbeta subunits. AfuGpgA consists of 90 amino acids showing 95-98% identity with other fungal G-protein gamma subunits. The deletion (Delta) of AfusfaD or AfugpgA resulted in severe impairment in vegetative growth, conidial germination and conidial trehalose breakdown. While the total number of conidia produced by DeltaAfusfaD and DeltaAfugpgA strains on solid medium was only about 1% of wild type, the growth-adjusted conidiation levels were twofold higher than those of wild type. Enhanced formation of conidiophores and elevated AfubrlA mRNA levels were observable in DeltaAfusfaD or DeltaAfugpgA strains in liquid submerged culture. Moreover, overexpression of AfusfaD or AfugpgA caused reduced levels of submerged culture conidiation, indicating that Gbetagamma is involved in negative regulation of conidiation. Gliotoxin and other metabolites were not detected in the chloroform extracts of DeltaAfusfaD and DeltaAfugpgA culture filtrates. Northern blot analyses revealed that, while AfulaeA mRNA levels unchanged, accumulation of gliZ mRNA was delayed by DeltaAfusfaD or DeltaAfugpgA. A model summarizing the roles of AfusfaD and AfugpgA in A. fumigatus is presented.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1432-0983
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
631-41
pubmed:dateRevised
2011-11-4
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Gbetagamma-mediated growth and developmental control in Aspergillus fumigatus.
pubmed:affiliation
Department of Microbiology and Biotechnology, Daejeon University, Daejon, Republic of Korea. shinks@dju.kr
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't