Linked Life Data

7969889

Source:http://linkedlifedata.com/resource/pubmed/id/7969889

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1994-11-28
pubmed:abstractText
Severe mutations within the norpA gene of Drosophila abolish the photoreceptor potential and render the fly blind by deleting phospholipase C, an essential component of the phototransduction pathway. To study the membrane association of phospholipase C, we have utilized biochemical assays of phospholipase C activity, which predominant measurable phospholipase C activity in head homogenates has been shown to be encoded by norpA, as well as antisera generated against the major gene product of norpA to examine its subcellular distribution before and during phototransduction. We find that both phospholipase C activity and the norpA protein are predominantly associated with membrane fractions in heads of both light- and dark-adapted flies. Moreover, phospholipase C activity as well as norpA protein can be easily extracted from membrane preparations of light- or dark-adapted flies using high salt, indicating that the norpA protein is peripherally localized on the membrane. These data suggest that the norpA encoded phospholipase C of Drosophila is a permanent peripheral membrane protein. If this is indeed the case, then it would mean that the reversible redistribution of phospholipase C from the cytosol to the membrane, as observed in epidermal growth factor receptor stimulation of mammalian phospholipase C gamma, is not a universal mechanism utilized by all types of phosphatidylinositol-specific phospholipase C.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0306-4522
pubmed:author
pubmed:issnType
Print
pubmed:volume
61
pubmed:geneSymbol
norpA
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
141-8
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Membrane association of phospholipase C encoded by the norpA gene of Drosophila melanogaster.
pubmed:affiliation
Department of Biological Sciences, State University of New York, Buffalo 14260.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.