Ontology highlight
ABSTRACT:
SUBMITTER: Hou S
PROVIDER: S-EPMC2824562 | biostudies-literature | 2009 Jul-Aug
REPOSITORIES: biostudies-literature
Hou Shangwei S Horrigan Frank T FT Xu Rong R Heinemann Stefan H SH Hoshi Toshinori T
Channels (Austin, Tex.) 20090717 4
Large-conductance Ca(2+)- and voltage-gated Slo1 BK channels are allosterically activated by depolarization and intracellular ligands such as Ca(2+). Of the two high-affinity Ca(2+) sensors present in the channel, the RCK1 sensor also mediates H(+)-dependent activation of the channel. In this study, we examined the comparative mechanisms of the channel activation by Ca(2+) and H(+). Steady-state macroscopic conductance-voltage measurements as well as single-channel openings at negative voltages ...[more]