The Effect of Protein Kinase C Activation on Gz-Mediated Regulation of Type 2 and 6 Adenylyl CyclasesHo M.K.C. · Chan J.S.C. · Yung L.Y. · Wong Y.H.
Department of Biology and Biotechnology Research Institute, Hong Kong University of Science and Technology, Hong Kong, China
Three serine-to-alanine mutants of the α subunit of the heterotrimeric G protein Gz (αz) were examined for their signaling properties in the presence of phorbol ester treatment. All three αz mutants resembled wild-type αz in their abilities to inhibit αs-stimulated type 6 adenylyl cyclase (AC6) and phorbol ester treatment reduced their magnitudes of inhibition. Depending on the permissive condition, the βγ-mediated stimulation of type 2 adenylyl cyclase (AC2) was differentially regulated by αz and the three mutants. Mutation of Ser27 but not Ser16 of αz affected the efficient release of βγ subunits upon receptor activation and abolished the stimulation of phosphorylated but not αs-stimulated AC2.
Copyright © 2000 S. Karger AG, Basel
|Direct payment||This item at the regular price: USD 38.00|
|Payment from account||With a Karger Pay-per-View account (down payment USD 150)
you profit from a special rate for this and other single items.
This item at the discounted price: USD 26.50