doi: 10.1016/0167-4838(82)90130-3.
Nucleation of actin polymerization from profilactin. Opposite effects of different nuclei
- PMID: 7201325
- DOI: 10.1016/0167-4838(82)90130-3
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Nucleation of actin polymerization from profilactin. Opposite effects of different nuclei
Biochim Biophys Acta.
.
Abstract
The lag in polymerization of calf spleen profilactin in response to addition of MgCl2 can be overcome by small amounts of spectrin-actin-band 4.1 complex, covalently crosslinked actin oligomers or sonicated F-actin. All of these factors also nucleate polymerization of pure actin. Another nucleator of actin polymerization, villin, delays filaments formation from profilactin. A simple model of the interaction of profilin with actin can explain these apparently conflicting results in terms of the polarity with which actin filaments elongate from the different nuclei.
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