Journal
JOURNAL OF NEUROCHEMISTRY
Volume 108, Issue 6, Pages 1515-1525Publisher
WILEY
DOI: 10.1111/j.1471-4159.2009.05913.x
Keywords
G protein-coupled receptors; interacting proteins; metabotropic glutamate receptors; mGluR1b; proteomics; trafficking
Categories
Funding
- NARSAD
- FRAXA
- NIH [NS47684, NS20752]
Ask authors/readers for more resources
Regulated trafficking of neurotransmitter receptors is critical to normal neurodevelopment and neuronal signaling. Group I mGluRs (mGluR1/5 and their splice variants) are G protein-coupled receptors enriched at excitatory synapses, where they serve to modulate glutamatergic transmission. The mGluR1 splice variants mGluR1a and mGluR1b are broadly expressed in the central nervous system and differ in their signaling and trafficking properties. Several proteins have been identified that selectively interact with mGluR1a and participate in receptor trafficking but no proteins interacting with mGluR1b have thus far been reported. We have used a proteomic strategy to isolate and identify proteins that co-purify with mGluR1b in Madin-Darby Canine Kidney (MDCK) cells, an established model system for trafficking studies. Here, we report the identification of 10 novel candidate mGluR1b-interacting proteins. Several of the identified proteins are structural components of the cell cytoskeleton, while others serve as cytoskeleton-associated adaptors and motors or endoplasmic reticulum-associated chaperones. Findings from this work will help unravel the complex cellular mechanisms underlying mGluR trafficking under physiological and pathological conditions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available