Kang Hui, Lew Daniel J
Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, 27710, USA.
Curr Genet. 2017 Feb;63(1):75-77. doi: 10.1007/s00294-016-0623-1. Epub 2016 Jun 16.
Studies on a yeast cell cycle checkpoint that can delay mitosis depending on whether cells have built a bud have identified a "sensor" that seems to recognize the organization of filament-forming septin proteins. Innovative work applying correlative light and platinum replica electron microscopy suggests that the informative septin organization involves parallel alignment of septin filaments, and another striking study shows that septin filaments prefer to populate membranes that have positive micron-scale curvature. Together, these findings suggest a model for how cells may monitor aspects of their own shape to influence cell behavior.
关于一种酵母细胞周期检查点的研究表明,该检查点可根据细胞是否已形成芽来延迟有丝分裂,研究还发现了一种“传感器”,它似乎能识别形成丝状的隔膜蛋白的组织形式。运用相关光学和铂复型电子显微镜的创新性研究表明,提供信息的隔膜蛋白组织形式涉及隔膜丝的平行排列,另一项引人注目的研究表明,隔膜丝更倾向于分布在具有正微米级曲率的膜上。这些发现共同提出了一个模型,用以解释细胞如何监测自身形状的各个方面以影响细胞行为。