Chem. Senses 24: 295-299,
1999
© Oxford University Press
Protein Kinase Cß and
Selectively Phosphorylate Odorant and Metabotropic Glutamate Receptors
Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
Correspondence to be sent to: Richard C. Bruch, Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA. e-mail:rbruch{at}lsuvm.sncc.lsu.edu
Recombinant protein segments from a metabotropic glutamate receptor and from an
odorant
receptor were used as substrates in protein kinase C phosphorylation assays. Protein kinase
Cß
and
phosphorylated an intracellular consensus phosphorylation site in the metabotropic
glutamate
receptor. Only protein kinase C
phosphorylated a novel extracellular consensus
phosphorylation
site
in the odorant receptor. These results suggest differential regulation of these receptors by protein
kinase
C isotypes.