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Myosin light chain compositions of the interatrial and interventricular septa of sheep heart

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Summary

The myosin light chain composition of sheep interatrial and interventricular septa were analysed by one- and two-dimensional polyacrylamide gel. The interventricular septum has myosin light chain composition indistinguishable from that of ventricular myosin. Myosin from the interatrial septum contains three light chains, two of which co-migrated with the two atrial light chains (ALC1 and ALC2), while the third co-migrated with ventricular light chain 2 (VLC2). ALC1 are more abundant than ALC2 or VLC2 suggesting a mixed myosin population. Myosin with ALC1 and VLC2 light chain composition may be present, and its possible relationship with cardiac “conducting” cells is discussed.

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Author notes

  1. Yew Phew See

    Present address: Cardiovascular Research Focus, Division of Cardiology, Research Institute, The Hospital for Sick Children, 555 University Avenue, M5G 1X8, Toronto, Ontario, Canada

Authors and Affiliations

  1. Cardiovascular Research Focus, Division of Cardiology, Research Institute, The Hospital for Sick Children, 555 University Avenue, M5G 1X8, Toronto, Ontario, Canada

    P. M. Olley & G. Jackowski

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  1. Yew Phew See
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  2. P. M. Olley
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  3. G. Jackowski
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See, Y.P., Olley, P.M. & Jackowski, G. Myosin light chain compositions of the interatrial and interventricular septa of sheep heart. Basic Res Cardiol 80, 357–362 (1985). https://doi.org/10.1007/BF01908179

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  • DOI: https://doi.org/10.1007/BF01908179

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