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@ARTICLE{CruzGarcia:905991,
author = {Cruz-Garcia, Yiliam and Barkovits, Katalin and Kohlhaas,
Michael and Pickel, Simone and Gulentz, Michelle and Heindl,
Cornelia and Pfeiffer, Kathy and Eder-Negrin, Petra and
Maack, Christoph and Marcus, Katrin and Kuhn, Michaela and
Miranda Laferte, Erick},
title = {{N}anoenviroments of the β-{S}ubunit of {L}-{T}ype
{V}oltage-{G}ated {C}alcium {C}hannels in {A}dult
{C}ardiomyocytes},
journal = {Frontiers in cell and developmental biology},
volume = {9},
issn = {2296-634X},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2022-01165},
pages = {724778},
year = {2022},
abstract = {In cardiomyocytes, Ca2+ influx through L-type voltage-gated
calcium channels (LTCCs) following membrane depolarization
regulates crucial Ca2+-dependent processes including
duration and amplitude of the action potentials and
excitation-contraction coupling. LTCCs are heteromultimeric
proteins composed of the Cavα1, Cavβ, Cavα2δ and Cavγ
subunits. Here, using ascorbate peroxidase (APEX2)-mediated
proximity labeling and quantitative proteomics, we
identified 61 proteins in the nanoenvironments of Cavβ2 in
cardiomyocytes. These proteins are involved in diverse
cellular functions such as cellular trafficking, cardiac
contraction, sarcomere organization and
excitation-contraction coupling. Moreover, pull-down assays
and co-immunoprecipitation analyses revealed that Cavβ2
interacts with the ryanodine receptor 2 (RyR2) in adult
cardiomyocytes, probably coupling LTCCs and the RyR2 into a
supramolecular complex at the dyads. This interaction is
mediated by the Src-homology 3 domain of Cavβ2 and is
necessary for an effective pacing frequency-dependent
increase of the Ca2+-induced Ca2+ release mechanism in
cardiomyocytes.},
cin = {IBI-1},
ddc = {570},
cid = {I:(DE-Juel1)IBI-1-20200312},
pnm = {5243 - Information Processing in Distributed Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5243},
typ = {PUB:(DE-HGF)16},
pubmed = {35047492},
UT = {WOS:000751080600001},
doi = {10.3389/fcell.2021.724778},
url = {https://juser.fz-juelich.de/record/905991},
}