rdf:type |
|
lifeskim:mentions |
umls-concept:C0007634,
umls-concept:C0021641,
umls-concept:C0030685,
umls-concept:C0086376,
umls-concept:C0391871,
umls-concept:C0597551,
umls-concept:C0680255,
umls-concept:C0682970,
umls-concept:C1283071,
umls-concept:C1948023,
umls-concept:C1963578
|
pubmed:issue |
2
|
pubmed:dateCreated |
1993-8-24
|
pubmed:abstractText |
A synthetic peptide (rab3AL) corresponding to the effector domain of rab3, a small GTP-binding protein, stimulated basal and potentiated Ca(2+)- as well as GTP gamma S-evoked insulin secretion about 2-fold from streptolysin-O permeabilized HIT cells. This effect was specific, since the analogous peptides of ras or rab1 did not affect the exocytotic event. The more than additive effect of rab3AL on Ca2+ or GTP gamma S stimulation indicates a distinct mode of action of the peptide. The partial loss of cytosolic proteins from permeabilized cells was accompanied by a faster run-down of the secretory response to Ca2+ than the one to GTP gamma S. The persistent effect of rab3AL under these conditions points to a membrane localization of its target. These results suggest that rab3 and its effector are involved in the regulation of insulin secretion.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Jul
|
pubmed:issn |
0014-5793
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
26
|
pubmed:volume |
327
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
145-9
|
pubmed:dateRevised |
2011-11-17
|
pubmed:meshHeading |
pubmed-meshheading:8392949-Calcium,
pubmed-meshheading:8392949-Cell Line,
pubmed-meshheading:8392949-Cell Membrane Permeability,
pubmed-meshheading:8392949-Cells, Cultured,
pubmed-meshheading:8392949-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:8392949-Exocytosis,
pubmed-meshheading:8392949-GTP-Binding Proteins,
pubmed-meshheading:8392949-Guanosine 5'-O-(3-Thiotriphosphate),
pubmed-meshheading:8392949-Humans,
pubmed-meshheading:8392949-Immunoblotting,
pubmed-meshheading:8392949-Insulin,
pubmed-meshheading:8392949-Nerve Tissue Proteins,
pubmed-meshheading:8392949-Peptides,
pubmed-meshheading:8392949-Streptolysins,
pubmed-meshheading:8392949-rab3 GTP-Binding Proteins
|
pubmed:year |
1993
|
pubmed:articleTitle |
Stimulation of insulin release from permeabilized HIT-T15 cells by a synthetic peptide corresponding to the effector domain of the small GTP-binding protein rab3.
|
pubmed:affiliation |
Département de Médecine, Centre Médical Universitaire, Geneva, Switzerland.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|