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The Schizosaccharomyces pombe actin‐related protein, Arp3, is a component of the cortical actin cytoskeleton and interacts with profilin.
Author(s) -
McCollum D.,
Feoktistova A.,
Morphew M.,
Balasubramanian M.,
Gould K. L.
Publication year - 1996
Publication title -
the embo journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.484
H-Index - 392
eISSN - 1460-2075
pISSN - 0261-4189
DOI - 10.1002/j.1460-2075.1996.tb01035.x
Subject(s) - profilin , biology , schizosaccharomyces pombe , actin remodeling , actin , mdia1 , microbiology and biotechnology , actin cytoskeleton , cytoskeleton , actin binding protein , schizosaccharomyces , genetics , yeast , saccharomyces cerevisiae , cell
The gene encoding the actin‐related protein Arp3 was first identified in the fission yeast Schizosaccharomyces pombe and is a member of an evolutionarily conserved family of actin‐related proteins. Here we present several key findings that define an essential role for Arp3p in the functioning of the cortical actin cytoskeleton. First, mutants in arp3 interact specifically with profilin and actin mutants. Second, Arp3 localizes to cortical actin patches which are required for polarized cell growth. Third, the arp3 gene is required for the reorganization of the actin cytoskeleton during the cell cycle. Finally, the Arp3 protein is present in a large protein complex. We believe that this complex may mediate the cortical functions of profilin at actin patches in S. pombe.