鱼腥藻异形胞分化过程中hetC在向非分裂状态转变中的作用
Role for hetC in the transition to a nondividing state during heterocyst differentiation in Anabaena sp.
作者信息
Xu X, Wolk C P
机构信息
MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824-1312, USA.
出版信息
J Bacteriol. 2001 Jan;183(1):393-6. doi: 10.1128/JB.183.1.393-396.2001.
Abstract
Nitrogen-deprived filaments of wild-type or hetC Anabaena sp. produce respectively, at semiregular intervals, heterocysts and weakly fluorescent cells. Unlike heterocysts, the latter cells can divide and elongate, producing a pattern of spaced series of small cells. Because a hetR::gfp fusion is expressed most strongly in the small cells, we propose that these small cells represent a very early stage of heterocyst differentiation. hetC::gfp is expressed most strongly in proheterocysts and heterocysts.
摘要
野生型或hetC鱼腥藻的缺氮丝状体分别以半规则间隔产生异形胞和弱荧光细胞。与异形胞不同，后一种细胞可以分裂和伸长，产生一系列间隔排列的小细胞模式。由于hetR::gfp融合蛋白在小细胞中表达最强，我们提出这些小细胞代表异形胞分化的一个非常早期阶段。hetC::gfp在原异形胞和异形胞中表达最强。
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hetC, a gene coding for a protein similar to bacterial ABC protein exporters, is involved in early regulation of heterocyst differentiation in Anabaena sp. strain PCC 7120.hetC是一个编码与细菌ABC蛋白输出器相似蛋白质的基因，它参与鱼腥藻PCC 7120菌株异形胞分化的早期调控。
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