Abstract
VARIOUS procedures have been used for extracting contractile protein from vascular smooth muscle1–3. In the course of preparing extracts from the cow carotid artery using a medium of 0.6 M KCl, the actomyosin content was estimated by measuring the ATP-sensitivity and viscosity number (Zη). In this report it will be shown that the extract from cow carotid artery consists of actomyosin and an actin-combining component, probably myosin, firmly associated with one another. It is believed that this firm association is a manifestation of unusual solubility properties of vascular smooth muscle myosin.
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MALLIN, M. Actomyosin and Myosin of Vascular Smooth Muscle. Nature 207, 1297–1298 (1965). https://doi.org/10.1038/2071297a0
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DOI: https://doi.org/10.1038/2071297a0
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