Copurification of actin and desmin from chicken smooth muscle and their copolymerization in vitro to intermediate filaments

Desmin is a 50,000-mol wt protein that is enriched along with 100-Å filaments in chicken gizzard that has been extracted with 1 M KI. Although 1 M KI removes most of the actin from gizzard, a small fraction of this protein remains persistently insoluble, along with desmin. The solubility properties...

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