Schizosaccharomyces pombe cdc4+ gene encodes a novel EF-hand protein essential for cytokinesis.

Schizosaccharomyces pombe cdc4+ gene encodes a novel EF-hand protein essential for cytokinesis.
复制标题

schizosaccharomyces pombe cdc4+基因编码一种对细胞因子必不可少的新型EF手蛋白。

DOI:
10.1083/jcb.130.3.651
复制
发表时间:
1995-08
影响因子:
7.8
通讯作者:
GOULD, KL
GOULD, KL
中科院分区:
生物学1区
文献类型:
--
作者:
MCCOLLUM, D;BALASUBRAMANIAN, MK;PELCHER, LE;HEMMINGSEN, SM;GOULD, KL

文献摘要

参考文献

被引文献

相似文献

裂糖菌pombe细胞通过内侧裂变分裂。一类细胞分裂突变体(cdc),即晚期分离突变体,定义了四种基因:cdc3, cdc4, cdc8和cdc12 (Nurse, P., P. Thuriaux, and K. Nasmyth. 1976)。摩尔和将军热奈,146:167-178)。我们克隆并鉴定了cdc4基因,并证实了预测的基因产物。Cdc4p是一种含有141个氨基酸的多肽,其序列与肌球蛋白轻链、钙调蛋白和肌钙蛋白c等EF-hand蛋白相似。两个对温度敏感的致死性等位基因cdc4-8和cdc4- 31积累了多个核和多个不合适的F-actin环和间隔,但不能完成细胞分裂。cdc4的缺失也会导致致命的终末表型,其特征是多核、细长的细胞不能完成细胞分裂。序列比较表明,Cdc4p可能是一类新的EF-hand蛋白的成员。Cdc4p定位于细胞分裂的中间区域的环状结构。因此,Cdc4p似乎是f -肌动蛋白收缩环的重要组成部分。我们发现Cdc4蛋白与一个200-kD蛋白形成复合体,该蛋白可以与UTP交联,这是肌凝蛋白重链的共同特性。综上所述,这些结果表明Cdc4p可能是一种新的肌球蛋白轻链。
Schizosaccharomyces pombe cells divide by medial fission. One class of cell division mutants (cdc), the late septation mutants, defines four genes: cdc3, cdc4, cdc8, and cdc12 (Nurse, P., P. Thuriaux, and K. Nasmyth. 1976. Mol. & Gen. Genet. 146:167-178). We have cloned and characterized the cdc4 gene and show that the predicted gene product. Cdc4p, is a 141-amino acid polypeptide that is similar in sequence to EF-hand proteins including myosin light chains, calmodulin, and troponin C. Two temperature-sensitive lethal alleles, cdc4-8 and cdc4- 31, accumulate multiple nuclei and multiple improper F-actin rings and septa but fail to complete cytokinesis. Deletion of cdc4 also results in a lethal terminal phenotype characterized by multinucleate, elongated cells that fail to complete cytokinesis. Sequence comparisons suggest that Cdc4p may be a member of a new class of EF-hand proteins. Cdc4p localizes to a ringlike structure in the medial region of cells undergoing cytokinesis. Thus, Cdc4p appears to be an essential component of the F-actin contractile ring. We find that Cdc4 protein forms a complex with a 200-kD protein which can be cross-linked to UTP, a property common to myosin heavy chains. Together these results suggest that Cdc4p may be a novel myosin light chain.
肌球蛋白在细胞质,裂解沟和人类细胞有丝分裂纺锤体中的荧光抗体定位。
DOI: 10.1083/jcb.71.3.848
发表时间: 1976-12
影响因子: 7.8
作者:
Fujiwara, K;Pollard, T D
通讯作者: Pollard, T D
DOI: 10.1016/0092-8674(94)90152-x
发表时间: 1994-05-06
期刊: CELL
影响因子: 64.5
作者:
NEUFELD, TP;RUBIN, GM
通讯作者: RUBIN, GM
DOI: 10.1016/0092-8674(92)90614-i
发表时间: 1992-06-12
期刊: CELL
影响因子: 64.5
作者:
POLLENZ, RS;CHEN, TLL;CHISHOLM, RL
通讯作者: CHISHOLM, RL
DOI: 10.1126/science.3576221
发表时间: 1987-05-29
期刊: SCIENCE
影响因子: 56.9
作者:
KNECHT, DA;LOOMIS, WF
通讯作者: LOOMIS, WF
DOI: 10.1083/jcb.74.1.251
发表时间: 1977-07
影响因子: 7.8
作者:
Mabuchi, I;Okuno, M
通讯作者: Okuno, M