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豇豆花叶病毒的运动蛋白在体外能结合鸟苷三磷酸(GTP)和单链核酸。

The movement protein of cowpea mosaic virus binds GTP and single-stranded nucleic acid in vitro.

作者信息

Carvalho C M, Pouwels J, van Lent J W M, Bisseling T, Goldbach R W, Wellink J

机构信息

Laboratory of Virology, Department of Plant Sciences, Wageningen University, 6709 PD Wageningen, The Netherlands.

出版信息

J Virol. 2004 Feb;78(3):1591-4. doi: 10.1128/jvi.78.3.1591-1594.2004.

Abstract

The movement protein (MP) of Cowpea mosaic virus forms tubules in plasmodesmata to enable the transport of mature virions. Here it is shown that the MP is capable of specifically binding riboguanosine triphosphate and that mutational analysis suggests that GTP binding plays a role in the targeted transport of the MP. Furthermore, the MP is capable of binding both single-stranded RNA and single-stranded DNA in a non-sequence-specific manner, and the GTP- and RNA-binding sites do not overlap.

摘要

豇豆花叶病毒的运动蛋白(MP)在胞间连丝中形成小管,以促进成熟病毒粒子的运输。本文表明,MP能够特异性结合三磷酸核糖鸟苷,并且突变分析表明,GTP结合在MP的靶向运输中发挥作用。此外,MP能够以非序列特异性方式结合单链RNA和单链DNA,且GTP结合位点与RNA结合位点不重叠。

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本文引用的文献

1
TRANSPORT OF PROTEINS AND NUCLEIC ACIDS THROUGH PLASMODESMATA.蛋白质和核酸通过胞间连丝的运输
Annu Rev Plant Physiol Plant Mol Biol. 1997 Jun;48:27-50. doi: 10.1146/annurev.arplant.48.1.27.
2
Identification of distinct steps during tubule formation by the movement protein of Cowpea mosaic virus.
J Gen Virol. 2003 Dec;84(Pt 12):3485-3494. doi: 10.1099/vir.0.19553-0.
4
Dynamics and mechanics of the microtubule plus end.微管正端的动力学与力学
Nature. 2003 Apr 17;422(6933):753-8. doi: 10.1038/nature01600.

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