화학공학소재연구정보센터
Biochemical and Biophysical Research Communications, Vol.270, No.1, 34-39, 2000
Molecular cloning and characterization of Xenopus RGS5
We identified sis genes that encode putative RGS proteins (XRGSI-VI) in developing Xenopus embryos using PCR amplification with degenerate primers corresponding to the conserved region (RGS domain) of known RGS proteins. RT-PCR analysis revealed that mRNAs of these XRGSs are differentially expressed during embryogenesis. At stage 1, only XRGSII mRNA was detected On the other hand, expression of SRGSVI mRNA increased apparently at stage 14 and expression of three of other XRGS (III, IV,V, elevated between stage 25 and 40, To further characterize XRGS proteins expressed in Xenopus embryos, we isolated a cDNA clone for XRGSIII. Eased on determined nucleotide sequence, XRGSIII was considered as a Xenopus homologue of mammalian RGS5 (XRGS5), Genetic analysis using the pheromone response halo assay showed that expression of XRGS5 inhibits yeast response to alpha-factor, suggesting that XRGS5 negatively regulates the G-protein-mediated signaling pathway in developing Xenopus embryos,