A subunit of the dynein regulatory complex in Chlamydomonas is a homologue of a growth arrest-specific gene product.

A subunit of the dynein regulatory complex in Chlamydomonas is a homologue of a growth arrest-specific gene product.
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DOI:
10.1083/jcb.200303019
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发表时间:
2003-07-07
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Porter ME
Porter ME
中科院分区:
其他
文献类型:
--
作者:
Rupp G;Porter ME

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动力蛋白调节复合物(dynein regulatory complex,DRC)是鞭毛运动调节途径中的重要中间体。为了确定亚基的DRC,我们的特点是衣原体运动突变体通过插入突变。pf 2 -4突变体显示出改变的波形,导致慢速游泳细胞。EM分析揭示了DRC结构的缺陷,可以通过重新引入野生型PF 2基因来挽救。免疫定位研究表明,PF 2蛋白分布沿着轴丝的长度,在那里它是一个离散的多肽复合物的一部分。PF 2是一种卷曲螺旋蛋白,与哺乳动物生长停滞特异性基因产物(Gas 11/Gas 8)和称为锥虫蛋白的锥虫蛋白具有显著的同源性。PF 2及其同系物似乎是通用组件的能动轴丝所需的DRC大会和鞭毛运动的调节。Gas 8/Gas 11转录本在广泛组织中的表达也可能表明PF 2相关蛋白在其他微管结构中的潜在作用。
The dynein regulatory complex (DRC) is an important intermediate in the pathway that regulates flagellar motility. To identify subunits of the DRC, we characterized a Chlamydomonas motility mutant obtained by insertional mutagenesis. The pf2-4 mutant displays an altered waveform that results in slow swimming cells. EM analysis reveals defects in DRC structure that can be rescued by reintroduction of the wild-type PF2 gene. Immunolocalization studies show that the PF2 protein is distributed along the length of the axoneme, where it is part of a discrete complex of polypeptides. PF2 is a coiled-coil protein that shares significant homology with a mammalian growth arrest–specific gene product (Gas11/Gas8) and a trypanosome protein known as trypanin. PF2 and its homologues appear to be universal components of motile axonemes that are required for DRC assembly and the regulation of flagellar motility. The expression of Gas8/Gas11 transcripts in a wide range of tissues may also indicate a potential role for PF2-related proteins in other microtubule-based structures.
DOI: 10.1073/pnas.86.17.6449
发表时间: 1989-09-01
影响因子: 11.1
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FERNANDEZ, E;SCHNELL, R;LEFEBVRE, PA
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发表时间: 2002-03-04
期刊: The Journal of cell biology
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期刊: The Journal of cell biology
影响因子: --
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