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Methods Enzymol. 2006;407:484-98.

Analyses of Rem/RGK signaling and biological activity.

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1
Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, Kentucky, USA.

Abstract

Rem (Rad and Gem related) is a member of the RGK family of Ras-related GTPases that also includes Rad, Rem2, and Gem/Kir. All RGK proteins share structural features that are distinct from other Ras-related proteins, including several nonconservative amino acid substitutions within regions known to participate in nucleotide binding and hydrolysis and a C-terminal extension that contains regulatory sites that seem to control both subcellular location and function. Rem is known to modulate two distinct signal transduction pathways, regulating both cytoskeletal reorganization and voltage-gated Ca2+ channel activity. In this chapter, we summarize the experimental approaches used to characterize the interaction of Rem with 14-3-3 proteins and Ca2+ channel beta-subunits and describe electrophysiological analyses for characterizing Rem-mediated regulation of L-type Ca2+ channel activity.

PMID:
16757347
DOI:
10.1016/S0076-6879(05)07039-4
[Indexed for MEDLINE]
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