The mitochondrial BKCa channel cardiac interactome reveals BKCa association with the mitochondrial import receptor subunit Tom22, and the adenine nucleotide translocator.
[No authors listed]
摘要
Mitochondrial BKCa channel, mitoBKCa, regulates mitochondria function in the heart but information on its protein partnerships in cardiac mitochondria is missing. A directed proteomic approach discovered the novel interaction of BKCa with Tom22, a component of the mitochondrion outer membrane import system, and the adenine nucleotide translocator (ANT). The expressed protein partners co-immunoprecipitated and co-segregated into mitochondrial fractions in HEK293T cells. The BKCa 50 amino acid splice insert, DEC, facilitated BKCa interaction with ANT. Further, BKCa transmembrane domain was required for the association with both Tom22 and ANT. The results serve as a working framework to understand mitoBKCa import and functional relationships.
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基因功能
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原始数据
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文献解读
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