钙及钙螯合剂对大肠杆菌L型NC-7生长及形态的影响
Effects of calcium and calcium chelators on growth and morphology of Escherichia coli L-form NC-7.
作者信息
Onoda T, Enokizono J, Kaya H, Oshima A, Freestone P, Norris V
机构信息
Department of Biological Science, Faculty of Life and Environmental Science, Shimane University, Matsue 690, Japan.
出版信息
J Bacteriol. 2000 Mar;182(5):1419-22. doi: 10.1128/JB.182.5.1419-1422.2000.
Abstract
Growth of a wall-less, L-form of Escherichia coli specifically requires calcium, and in its absence, cells ceased dividing, became spherical, swelled, developed large vacuoles, and eventually lysed. The key cell division protein, FtsZ, was present in the L-form at a concentration five times less than that in the parental strain. One interpretation of these results is that the L-form possesses an enzoskeleton partly regulated by calcium.
摘要
无壁的大肠杆菌L型的生长特别需要钙，在没有钙的情况下，细胞停止分裂，变成球形，膨胀，形成大液泡，最终裂解。关键的细胞分裂蛋白FtsZ在L型中的浓度比亲本菌株低五倍。对这些结果的一种解释是，L型具有部分受钙调节的内骨骼。
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