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Cell Motil Cytoskeleton. 1995;30(1):1-7.

Concentration of cofilin, a small actin-binding protein, at the cleavage furrow during cytokinesis.

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  • 1Department of Biology, Faculty of Science, Chiba University, Japan.

Abstract

Cofilin is a small actin-binding protein which regulates actin polymerization in a pH-dependent manner. Immunofluorescence microscopy with a monoclonal antibody for cofilin revealed that this protein is temporarily concentrated at the contractile ring during cytokinesis. Cofilin appeared to accumulate rapidly at the contractile ring during late stages of furrowing, and was finally enriched at the midbody. The concentration of cofilin at the contractile ring was observed in several kinds of cultured cells. Furthermore, cofilin introduced into living cells by a microinjection method was also concentrated at the contractile ring. These results suggest that cofilin is involved in actin reorganization during cytokinesis.

PMID:
7728864
[PubMed - indexed for MEDLINE]
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