Regulation of cytokinesis by spindle-pole bodies.
In the fission yeast Schizosaccharomyces pombe, cytokinesis is thought to be controlled by the daughter spindle-pole body (SPB) through a regulatory pathway named the septation initiation network (SIN). Here, we demonstrate that laser ablation of both, but not a single SPB, results in failure of cytokinesis. Ablation of only the daughter SPB often leads to activation of the SIN on the mother SPB and successful cytokinesis. Thus, either SPB can drive cytokinesis.
Magidson
Valentin
V
Wadsworth Center, Albany, NY 12201-0509, USA.
Chang
Fred
F
Khodjakov
Alexey
A
D018797:Cell Cycle Proteins / Q000235:genetics / Q000378:metabolism; D002455:Cell Division / Q000235:genetics / Q000502:physiology; D048749:Cytokinesis / Q000235:genetics / Q000502:physiology*; D049452:Green Fluorescent Proteins / Q000235:genetics / Q000378:metabolism; D009154:Mutation / Q000235:genetics; D017346:Protein Serine-Threonine Kinases / Q000235:genetics / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D012568:Schizosaccharomyces / Q000166:cytology / Q000235:genetics / Q000502:physiology*; D029702:Schizosaccharomyces pombe Proteins / Q000235:genetics / Q000378:metabolism; D015398:Signal Transduction / Q000502:physiology; D008941:Spindle Apparatus / Q000235:genetics / Q000502:physiology*
D018797:Cell Cycle Proteins; D011993:Recombinant Fusion Proteins; D029702:Schizosaccharomyces pombe Proteins; D049452:Green Fluorescent Proteins; C489406:cdc7 protein, S pombe; D017346:Protein Serine-Threonine Kinases