The Shot CH1 domain recognises a distinct form of F-actin during Drosophila oocyte determination
The Shot CH1 domain recognises a distinct form of F-actin during Drosophila oocyte determination
复制标题
Shot CH1 结构域在果蝇卵母细胞测定过程中识别不同形式的 F-肌动蛋白
DOI:
10.1101/2023.01.18.524359
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Nashchekin D
中科院分区:
文献类型:
--
作者:
Nashchekin D
In Drosophila, only one cell in a multicellular female germline cyst is specified as an oocyte and a similar process occurs in mammals. The symmetry-breaking cue for oocyte selection is provided by the fusome, a tubular structure connecting all cells in the cyst. The Drosophila spectraplakin Shot localises to the fusome and translates its asymmetry into a polarised microtubule network that is essential for oocyte specification, but how Shot recognises the fusome is unclear. Here, we demonstrate that the actin-binding domain (ABD) of Shot is necessary and sufficient to localise Shot to the fusome and mediates Shot function in oocyte specification together with the microtubule-binding domains. The calponin homology domain 1 of the Shot ABD recognises fusomal F-actin and requires calponin homology domain 2 to distinguish it from other forms of F-actin in the cyst. By contrast, the ABDs of utrophin, Fimbrin, Filamin, Lifeact and F-tractin do not recognise fusomal F-actin. We therefore propose that Shot propagates fusome asymmetry by recognising a specific conformational state of F-actin on the fusome.
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影响因子:
10.5
作者:
YUE, L;SPRADLING, AC
通讯作者:
SPRADLING, AC
DOI:
10.1101/2021.05.07.443143
发表时间:
2021
期刊:
--
影响因子:
--
作者:
Nashchekin D
通讯作者:
Nashchekin D
影响因子:
10.5
作者:
LANTZ, V;CHANG, JS;SCHEDL, P
通讯作者:
SCHEDL, P
影响因子:
16.8
作者:
通讯作者:
--
影响因子:
9.2
作者:
Röper, K;Brown, NH
通讯作者:
Brown, NH