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| Item Type: | Article |
|---|---|
| Title: | Subunit-specific inhibition of acid sensing ion channels by stomatin-like protein 1 |
| Creators Name: | Kozlenkov, A., Lapatsina, L., Lewin, G.R. and Smith, E.S.J. |
| Abstract: | There are five mammalian stomatin-domain genes all of which encode peripheral membrane proteins that can modulate ion channel function. Here we examined the ability of stomatin-like protein 1 (STOML1) to modulate the proton-sensitive members of the acid-sensing ion channel (ASIC) family. We find that STOML1 profoundly inhibits ASIC1a, but has no effect on the splice variant ASIC1b. The inactivation time constant of ASIC3 is also accelerated by STOML1. We examined STOML1 null mutant mice with a beta-galactosidase-neomycin cassette gene-trap reporter driven from the STOML1 gene locus, which indicated that STOML1 is expressed in at least 50% of dorsal root ganglion (DRG) neurones. Patch clamp recordings from mouse DRG neurones identified a trend for larger proton-gated currents in neurones lacking STOML1, which was due to a contribution of effects upon both transient and sustained currents, at different pH values, a finding consistent with an endogenous inhibitory function for STOML1. |
| Keywords: | Electrophysiology, Ion Channel Modulation, Sensory Nurons, Animals, Mice |
| Source: | Journal of Physiology |
| ISSN: | 0022-3751 |
| Publisher: | Wiley-Blackwell |
| Volume: | 592 |
| Number: | Pt 4 |
| Page Range: | 557-569 |
| Date: | 15 February 2014 |
| Official Publication: | https://doi.org/10.1113/jphysiol.2013.258657 |
| PubMed: | View item in PubMed |
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