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. 1994 Feb 1;91(3):853–857. doi: 10.1073/pnas.91.3.853

Association of a cellular myosin II with anionic phospholipids and the neuronal plasma membrane.

D Li 1, M Miller 1, P D Chantler 1
PMCID: PMC521410  PMID: 8302857

Abstract

Myosin II has been observed in close proximity to the neuronal plasma membrane, suggesting the possibility that at least one isoform of neuronal myosin II may be capable of direct association. Here, we demonstrate that a significant fraction (> 30%, saturable around 90%) of brain myosin II, but not myosins from skeletal or cardiac muscle, can bind to lipid vesicles composed of the anionic phospholipid L-alpha-phosphatidyl-L-serine but not with vesicles made from the neutral phospholipid L-alpha-phosphatidylcholine. Binding to lipid vesicles made from L-alpha-phosphatidyl-L-serine is enhanced in the presence of millimolar amounts of free calcium. ATPase activity remains unimpaired after vesicle association. Myosin II was also shown to remain in tight association with purified plasma membranes, even after depletion of actin. The above observations suggest that mechanisms involving membrane-bound myosin II are required to facilitate metazoan cell motility.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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