Cloning nematode myosin genes.

Cloning nematode myosin genes.
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克隆线虫肌球蛋白基因。

DOI:
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发表时间:
1985
期刊:
Cell and muscle motility
影响因子:
--
通讯作者:
D. Miller
D. Miller
中科院分区:
--
文献类型:
--
作者:
J. Karn;N. Dibb;D. Miller

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关于肌肉发育过程中差异基因表达的分子基础,收缩蛋白在纤维晶格中的组装,以及不同肌肉组织中收缩蛋白同种异构体的功能,我们知之甚少。小型土壤线虫秀丽隐杆线虫是一种有吸引力的生物,可以应用生物化学和遗传方法来研究这些问题。生物体中只有两种主要的肌肉——咽肌和体壁肌——并且在整个发育过程中,生物体中所有肌肉细胞的解剖结构和谱系是已知的(Suiston et al ., 1983; Suiston and Horvitz, 1977)。由于线虫组织质量的很大一部分是肌肉,因此可以从几升线虫培养物中以毫克为单位分离出主要的可收缩蛋白(Epstein等人,1974;Waterston等人,1977;Harris和Epstein, 1977; MacLeod等人,1977a,b; Zengel和Epstein, 1980)。秀丽隐杆线虫在琼脂板表面表现出特有的游动模式。遗传分析(Brenner, 1974)已经定义了100多种不同基因的突变,这些突变会导致动物运动缺陷(uncoordination,或unc, phei -notype)。其中22个unc基因的突变会导致肌肉超微结构的严重异常(Waterston et al ., 1980; Zengel and Epstein, 1980)。
Little is known about the molecular basis for differential gene expression during muscle development, the assembly of contractile proteins into filament lattices, or the functions of contractile protein isoforms in different muscle tissues. The small soil nematode Caenorhabditis elegans is an attractive organism in which to apply biochemical and genetic approaches to the study of these problems. Only two major muscles are present in the organism—the pharyngeal muscle and the body wall muscle—and the anatomy and lineage of all the muscle cells in the organism throughout development are known (Suiston et al, 1983; Suiston and Horvitz, 1977). Because a large fraction of the nematode tissue mass is muscle, the major contractile proteins can be isolated in milligram quantities from a few liters of nematode culture (Epstein et al, 1974; Waterston et al, 1977; Harris and Epstein, 1977; MacLeod et al, 1977a,b; Zengel and Epstein, 1980c). Caenorhabditis elegans exhibits a characteristic swimming pattern on the surface of agar plates. Genetic analysis (Brenner, 1974) has defined mutations in more than 100 different genes that produce animals with defective motility (the uncoordinated, or unc, phe-notype). Mutations in 22 of these unc genes create gross abnormalities in muscle ultrastructure (Waterston et al, 1980; Zengel and Epstein, 1980b).
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发表时间: 1982
影响因子: 5.6
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