Linked Life Data

2551278

Source:http://linkedlifedata.com/resource/pubmed/id/2551278

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1989-10-20
pubmed:abstractText
Functional receptors for the peptides of the endothelin (ET) and sarafotoxin (SRTX) family were characterized in newborn rat heart myocytes using human and rat endothelins (ET-1 and ET-3, respectively), SRTX-b and SRTX-c. Binding studies in intact cells and homogenates revealed significantly higher affinities of ET-1 and SRTX-b than of ET-3 and SRTX-c towards these receptors. This binding profile of ET/SRTX peptides points to their interaction with the receptor subtype designated E-S alpha. All four peptides induced time- and dose-dependent phosphoinositide hydrolysis with the following rank order of potency: ET-1 greater than SRTX-b greater than SRTX-c greater than ET-3. Thus, ET-3 which possesses an intermediate affinity toward the receptor was the least effective with regard to this response. These results confirm and extend our earlier report that the ET/SRTX peptides interact with a newly characterized receptor(s) associated with phosphoinositide metabolism and Ca2+ mobilization. The initiation of inositol phosphate formation is largely independent of extracellular Ca2+, verapamil and nifedipine, indicating that the ET/SRTX peptides are not agonists for the voltage-dependent Ca2+-channels.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
163
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
936-43
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Functional endothelin/sarafotoxin receptors in rat heart myocytes: structure-activity relationships and receptor subtypes.
pubmed:affiliation
Department of Biochemistry, George S. Wise Faculty of Life Sciences, Tel Aviv University, Israel.
pubmed:publicationType
Journal Article