Subcellular localization and interactions among TGB proteins of cowpea mild mottle virus.

Subcellular localization and interactions among TGB proteins of cowpea mild mottle virus.
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豇豆轻度斑驳病毒TGB蛋白的亚细胞定位和相互作用。

DOI:
10.1007/s00705-022-05576-7
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发表时间:
2022
影响因子:
2.7
通讯作者:
Carvalho SL
Carvalho SL
中科院分区:
医学4区
文献类型:
--
作者:
Carvalho SL

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豇豆轻斑驳病毒(Cowpea mild mottle virus,CPMMV)是一种弯曲的丝状病毒,属于卡拉病毒属(Carlavirus)。CPMMV基因组包含6个开放阅读框(ORF),其中由ORF 2 ~ 4编码的三重基因块(TGB)编码不同病毒的运动蛋白。CPMMV分离株CPMMV:BR:MG:09:2的TGB蛋白的亚细胞定位通过融合至荧光团的每种蛋白的瞬时表达来分析。总体而言,CPMMV TGB蛋白(TGBp)之间的积累模式和相互作用与马铃薯样组的对应蛋白相似。考虑到这些相似性,我们评估了CPMMV和马铃薯X病毒的TGB蛋白之间的潜在相互作用,这可以补充细胞间的运动。PVX的TGBp 2和TGBp 3对CPMMV的TGBp 1有作用,将其导向胞间连丝,但反之则不然。
Cowpea mild mottle virus (CPMMV) is a flexuous filamentous virus that belongs to the genusCarlavirus(familyBetaflexiviridae). The CPMMV genome contains six open reading frames (ORFs), among which the triple gene block (TGB), encoded by ORFs 2 to 4, has been reported to encode movement proteins for different viruses. The subcellular localization of the TGB proteins of CPMMV isolate CPMMV:BR:MG:09:2 was analysed by transient expression of each protein fused to a fluorophore. Overall, the accumulation pattern and interactions among CPMMV TGB proteins (TGBp) were similar to those of their counterparts from the potex-like group. Considering these similarities, we evaluated the potential interactions between the TGB proteins of CPMMV and of potato virus X, which could complement cell-to-cell movement. The TGBp2 and TGBp3 of PVX had an effect on CPMMV TGBp1, directing it to the plasmodesmata, but the reverse was not true.
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