猕猴桃病毒1的特性，它是长线形病毒科的一个新成员，编码一种类甜蛋白。
Characterization of Actinidia virus 1, a new member of the family Closteroviridae encoding a thaumatin-like protein.
作者信息
Blouin A G, Biccheri R, Khalifa M E, Pearson M N, Poggi Pollini C, Hamiaux C, Cohen D, Ratti C
机构信息
The New Zealand Institute for Plant & Food Research Limited, Private Bag, 92169, Auckland, New Zealand.
School of Biological Sciences, The University of Auckland, Private Bag, 92019, Auckland, New Zealand.
出版信息
Arch Virol. 2018 Jan;163(1):229-234. doi: 10.1007/s00705-017-3610-z. Epub 2017 Oct 17.
A new member of the family Closteroviridae was detected in Actinidia chinensis grown in Italy, using next generation sequencing of double-stranded RNA. The virus isolate, named Actinidia virus 1 (AcV-1) has a genome of 18,848 nts in length, a structure similar to the unclassified persimmon virus B (PeVB) and contains 12 open reading frames (ORFs) greater than 6 KDa, one carrying two papain-like leader proteases, a methyltransferase, a helicase and an RNA-dependent RNA polymerase domain. Additional ORFs code for homologs of heat shock protein 70, heat shock protein 90 and a coat protein. Curiously, AcV-1 and PeVB genomes code for a thaumatin-like protein, a peculiarity unreported for other viruses. In phylogenetic analyses both viruses group in a distinct clade evolutionarily related to closteroviruses. The final taxonomic position of AcV-1 within the family Closteroviridae is yet to be clarified.
利用双链RNA的新一代测序技术，在意大利种植的中华猕猴桃中检测到了长线形病毒科的一个新成员。该病毒分离株名为中华猕猴桃病毒1（AcV-1），基因组长度为18,848个核苷酸，其结构与未分类的柿树病毒B（PeVB）相似，包含12个大于6 kDa的开放阅读框（ORF），其中一个带有两个类木瓜蛋白酶前体、一个甲基转移酶、一个解旋酶和一个RNA依赖的RNA聚合酶结构域。其他开放阅读框编码热休克蛋白70、热休克蛋白90和一种外壳蛋白的同源物。奇怪的是，AcV-1和PeVB基因组编码一种类thaumatin蛋白，这是其他病毒未报道过的特性。在系统发育分析中，这两种病毒都聚集在一个与长线形病毒进化相关的独特分支中。AcV-1在长线形病毒科中的最终分类地位尚待明确。
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