Abstract:
:We have isolated a portion of the canine gene encoding the orphan receptor RDC1 [1]. The complete coding sequence is contained in a single exon, and an intron divides the 5' untranslated region of RDC1 mRNA. The RDC1 protein is 94% homologous to the gene product of GPRN1, which has been proposed to serve as a VIP receptor when expressed in CHO-K1 and COS-7 cells (Sreedharan, S.P. et al. (1991) Proc. Natl. Acad. Sci. USA 88, 4986-4990). Northern analysis indicates that CHO-K1 cells endogenously express a 2.1 kb RDC1 mRNA. However, while CHO-K1 cells possess detectable low affinity [125I]VIP binding sites, VIP binding is not altered in membranes of CHO-K1 cells expressing varying amounts of the RDC1 gene construct. Further, endogenous VIP binding is not increased by transient expression of RDC1 in COS-7 cells. Taken together, the data suggest that RDC1 is not a canine homolog of the proposed VIP receptor.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Cook JS,Wolsing DH,Lameh J,Olson CA,Correa PE,Sadee W,Blumenthal EM,Rosenbaum JSdoi
10.1016/0014-5793(92)80184-ikeywords:
subject
Has Abstractpub_date
1992-03-30 00:00:00pages
149-52issue
2eissn
0014-5793issn
1873-3468pii
0014-5793(92)80184-Ijournal_volume
300pub_type
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