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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2006-8-4
pubmed:abstractText
Pituitary adenylate cyclase-activating polypeptide (PACAP), a pleiotropic neuropeptide, exerts a variety of physiological functions through three types of G protein-coupled receptors, PAC1, VPAC1, and VAPC2. Characterization of the molecular forms of PAC1 in mouse heart revealed the presence of four types of variant receptors harboring the N or S variant in the first extracellular domain (EC1 domain) with or without the HOP1 insert in the third intracellular cytoplasmic loop (IC3 loop). Then, we assessed the binding affinity and ability to stimulate adenylyl cyclase of the PCA1 variant-expressing cells for PACAP. Adenylyl cyclase activation by PACAP was markedly influenced with the variant in the EC1 domain as well as that in the IC3 loop, in spite of a little difference in their binding properties. These data suggest that the combination of EC1 domain variants and IC3 loop variants might account for the diversity of intracellular signaling, which might contribute to multiple functions of PACAP including a role in the cardiovascular system.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0077-8923
pubmed:author
pubmed:issnType
Print
pubmed:volume
1070
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
586-90
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Characterization of the PAC1 variants expressed in the mouse heart.
pubmed:affiliation
Department of Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan.
pubmed:publicationType
Journal Article