Key result
Expression of nebulette domains revealed that the repeat domain binds actin, while the linker and SH3 domains specifically target this interaction to Z-lines in cardiomyocytes.
Population
Cardiomyocytes and fibroblasts
Design
Preclinical
Authors
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No immediate clinical implications; leaves open nebulette's role in human cardiomyopathy.
The study identifies specific functional domains of nebulette responsible for actin binding and Z-line targeting in cardiac myofibrils.
Moncman et al. (1999) studied Cardiac myofibril assembly. Expression of nebulette domains and GFP fusions was evaluated on Cellular localization and in vitro binding to actin, tropomyosin, and alpha-actinin. Expression of nebulette domains revealed that the repeat domain binds actin, while the linker and SH3 domains specifically target this interaction to Z-lines in cardiomyocytes.
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