Download Mammalian Transient Receptor Potential (TRP) Cation by Bernd Nilius, Veit Flockerzi PDF

By Bernd Nilius, Veit Flockerzi

In this fast paced box the most aim of this quantity is to supply up to date details at the molecular and sensible houses and pharmacology of mammalian TRP channels. best specialists within the box will describe houses of a unmarried TRP protein/channel or painting extra normal rules of TRP functionality and critical pathological occasions associated with mutations of TRP genes or their altered expression. Thereby this quantity on temporary Receptor power (TRP) Channels presents precious info for readers with diversified expectancies and backgrounds, in the event you are impending this box of analysis in addition to for these eager to make a visit to TRPs.

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Additional resources for Mammalian Transient Receptor Potential (TRP) Cation Channels: Volume I

Example text

Experiments using adult muscles from Trpc1 knockout mice revealed similar defects, but could not demonstrate an effect on store-operated Ca2+ entry pathways (Zanou et al. 2010). One of the explanations for the apparent discrepancy was that store-operated TRPC1 was most likely inhibited by I-mfa in adult muscles, whereas this inhibition could have been lifted in myoblasts through dynamic interactions among TRPC1, I-mfa, and myogenic factors. As discussed above, a similar concept was shown in pre-osteoclasts, where TRPC1 remained inhibited by I-mfa and, thus, did not contribute to store-operated Ca2+ entry pathways in these cells (Ong et al.

2000). Thus, these residues mediate the gating of TRPC1 by STIM1 in response to store depletion. TRPC1 has also been reported to homomultimerize (Kobori et al. 2009). Homomultimerization is likely to be mediated through domains with homology to ankyrin protein, called ankyrin repeats, as was seen with other TRPC members (Lepage et al. 2006). Lipid bilayer reconstitution and atomic force spectroscopy revealed that TRPC1 can form homotetramers (Barrera et al. 2007). Overall, the N- and C-termini of TRPC1 have been implicated in gating, Ca2+-dependent inactivation, and homomultimerization.

Finally, gating can occur through the action of immunophilins as was shown for FKBP52 and the Netrin/DCC receptor system. 1 Function In addition to the roles of TRPC1 in store- and receptor-operated Ca2+ entry pathways, TRPC1 was shown to mediate native stretch-activated currents in X. laevis oocytes and also in TRPC1-transfected CHO-K1 cells (Maroto et al. 2005; Barritt and Rychkov 2005), whereas TRPC1 was not functional in CHO-K1 cells in another study (Gottlieb et al. 2008). TRPC1 was found to mediate mechanosensitive currents in neuronal cells (Kerstein et al.

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