Dictyostelium amoebae lacking an F-box protein form spores rather than stalk in chimeras with wild type.

Dictyostelium amoebae lacking an F-box protein form spores rather than stalk in chimeras with wild type.
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缺乏F-box蛋白的盘基网柄菌阿米巴形成孢子,而不是野生型嵌合体中的茎。

DOI:
10.1073/pnas.97.7.3292
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发表时间:
2000
影响因子:
11.1
通讯作者:
Kessin,RH
Kessin,RH
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Ennis,HL;Dao,DN;Pukatzki,SU;Kessin,RH

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使用一个选择forDictyostelium突变体,优先形成孢子,我们已经恢复了一个突变体称为CheaterA。在嵌合体与同基因野生型细胞,TheCheaterA突变体优先形成活孢子,而不是不可活的柄细胞。突变体导致已经开始表达孢子特异性基因的野生型细胞在发育生物体的前柄区室中积累。在野生型细胞中,生长中的细胞中不存在chtA转录本,并且在发育早期出现。通过北方杂交检测到突变体中没有转录本。ThechtA基因编码具有F-box和WD 40结构域的蛋白质。这类蛋白质通常构成Skp 1、cullin、F-box(SCF)复合物的一部分,该复合物针对特定的蛋白质底物进行遍在化和降解。
Using a selection forDictyosteliummutants that preferentially form spores, we have recovered a mutant calledCheaterA.In chimeras with isogenic wild-type cells, theCheaterAmutant preferentially forms viable spores rather than inviable stalk cells. The mutant causes wild-type cells that have begun to express spore-specific genes to accumulate in the prestalk compartment of the developing organism. In the wild-type cells, thechtAtranscript is absent in growing cells and appears early in development. No transcript was detected in the mutant by Northern blot. ThechtAgene codes for a protein with an F-box and WD40 domains. This class of protein usually forms part of anSkp1,cullin,F-box (SCF) complex that targets specific protein substrates for ubiquitination and degradation.
通过自然选择实现复杂性的进化
DOI: --
发表时间: 1988
期刊:
影响因子: --
作者:
J. Bonner
通讯作者: J. Bonner