期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 282, 期 1, 页码 10-15出版社
ACADEMIC PRESS INC
DOI: 10.1006/bbrc.2001.4535
关键词
Rkp1; Cpc2; RACK1; Pck2; actin cytoskeleton; S. pombe
The Rkp1/Cpc2, a fission yeast RACK1 homolog, interacted with Pck2, one of the known PKC homologs, in vivo and in vitro. The rkp1-deletion mutants (Delta rkp1) are elongated and the pck2-deletion mutant (Delta pck2) showed abnormal morphology. The double-deletion mutant (Delta rkp1 Delta pck2) showed more aberrant cell shapes and was sensitive to high salt concentration. Both Delta rkp1 and Delta pck2 cells were sensitive to latrunculin B (kat B) which inhibits actin polymerization. The cells expressing the human RACK1 homolog complemented the latrunculin B sensitivity of Delta rkp1 indicating that human RACK1 is a functional homolog of Rkp1/Cpc2. We propose that Rkp1/Cpc2 may function as a receptor for Pck2 in the regulation of actin cytoskeleton organization during cell wall synthesis and morphogenesis of Schizosaccharomyces pombe. (C) 2001 Academic Press.
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