| Literature DB >> 3435469 |
Abstract
A method was developed to monitor continuously the matrix free Ca2+ concentration ([Ca2+]m) of heart mitochondria by use of the fluorescent Ca2+ indicators, fura-2 and quin2. The acetoxymethyl esters of fura-2 and quin2 were accumulated in and hydrolysed by isolated mitochondria. An increase of the mitochondrial Ca content from 0.3 nmol/mg of protein to 6 nmol/mg corresponded to a rise of [Ca2+]m from 30 to 1000 nM. The results indicate that physiological fluctuations of the mitochondrial Ca content elicit changes of [Ca2+]m in that range which regulates the matrix dehydrogenases.Entities:
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Year: 1987 PMID: 3435469 PMCID: PMC1148585 DOI: 10.1042/bj2480609
Source DB: PubMed Journal: Biochem J ISSN: 0264-6021 Impact factor: 3.857