Two functionally distinct myosin heavy chain isoforms in slow skeletal muscle fibres.

@article{Galler1997TwoFD,
  title={Two functionally distinct myosin heavy chain isoforms in slow skeletal muscle fibres.},
  author={Stefan Galler and Karlheinz Hilber and B{\"a}rbel Gohlsch and D. A. Pette},
  journal={FEBS letters},
  year={1997},
  volume={410 2-3},
  pages={
          150-2
        }
}
The head part of the myosin heavy chain (MHC) represents the essential component of the molecular force-generating system of muscle [1-3]. To date, three fast but only one slow MHC isoforms have been identified in adult mammalian limb muscles [4,5]. We show here two functionally different slow MHC isoforms, MHCIbeta and MHCIa, coexisting in a considerable fraction of slow fibres of rabbit plantaris muscle. The two isoforms exhibit distinct electrophoretic mobilities and different kinetic… CONTINUE READING
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