Key result
Developing chick muscle fibers express fast and slow Ca2+-ATPase isoforms independently of myosin heavy chain.
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May inform avian myogenesis models but should not change clinical practice; leaves open isoform coordination in mammalian muscle.
Kaprielian et al. (1987) studied Developing chick embryo and tissue-cultured myotubes. Developmental stage was evaluated on Expression of fast and slow isoforms of the Ca2+-ATPase. All developing chick skeletal muscle fibers expressed both fast and slow isoforms of the Ca2+-ATPase, which are not coordinately expressed with myosin heavy chain.
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