| Literature DB >> 2557231 |
C Rouyer-Fessard1, C Augeron, E Grasset, J J Maoret, C L Laboisse, M Laburthe.
Abstract
At the maximally effective concentration of 10 nM, VIP induced a marked (12.5-fold stimulation above basal), and sustained increase in short circuit current in the human intestinal epithelial cell line Cl.19A grown on permeable filters and placed in Ussing chambers. Half-maximal increase of Isc was observed for 0.1 nM VIP. This was well correlated with the VIP-stimulated adenylate cyclase activity (ED50:0.07 nM). Binding studies using 125I-VIP indicated that Cl.19A cells express a peptide-specific VIP receptor with a dissociation constant of 0.07 nM. Covalent labeling of receptors followed by SDS-PAGE analysis of membrane proteins resulted in the identification of a 63,000 dalton binding protein in Cl.19A cells.Entities:
Mesh:
Substances:
Year: 1989 PMID: 2557231 DOI: 10.1007/BF01950169
Source DB: PubMed Journal: Experientia ISSN: 0014-4754