Article
Myosin cross-bridges do not form precise rigor bonds in hypertrophic heart muscle carrying troponin T mutations.
Journal of molecular and cellular cardiology - 1 Sept 2011
Midde K, Dumka V, Pinto J R, Muthu P, Marandos P, Gryczynski I, Gryczynski Z, Potter J D, Borejdo J
Abstract excerpt
Distribution of orientations of myosin was examined in ex-vivo myofibrils from hearts of transgenic (Tg) mice expressing Familial Hypertrophic Cardiomyopathy (FHC) troponin T (TnT) mutations I79N, F110I and R278C. Humans are heterozygous for sarcomeric FHC mutations and so hypertrophic myocardium contains a mixture of the wild-type (WT) and mutated (MUT) TnT. If mutations are expressed at a low level there may...
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