Abstract:
:The lateral diffusion of BK(Ca) channels was previously shown to be highly 'confined' in the COS-7 cell membrane. Here we report that the diffusion coefficient and the confinement area of BK(Ca) channel were significantly increased by the treatment of latrunculin A, an actin-depolymerizing agent, but not by microtubule disruption. Site-directed mutational analyses further demonstrated that a single leucine residue in the C-terminal actin-binding motif was critical for the aforementioned effects of latrunculin A. We conclude that some BK(Ca) channels are directly associated with actin filaments and their lateral mobility can be restricted by the cytoskeletal components.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Won S,Lee BC,Park CSdoi
10.1016/j.febslet.2011.05.069subject
Has Abstractpub_date
2011-07-21 00:00:00pages
2323-30issue
14eissn
0014-5793issn
1873-3468pii
S0014-5793(11)00446-7journal_volume
585pub_type
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