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Identification of two additional plasmodesmata localization domains in the tobacco mosaic virus cell-to-cell-movement protein.

Abstract：

:Despite decades of intensive studies, the failure to identify plasmodesmata (PD) localization sequences has constrained our understanding of Tobacco mosaic virus (TMV) movement. Recently, we identified the first PD localization signal (major PLS) in the TMV movement protein (MP), which encompasses the first 50 amino acid residues of the MP. Although the major PLS is sufficient for PD targeting, the efficiency is lower than the full-length TMV MP. To address this efficiency gap, we identified two additional PLS domains encompassing amino acid residues 61 to 80, and 147 to 170 of the MP and showed that these two domains target to PD, but do not transit to adjacent cells. We also demonstrated that the MP61-80 fragment interacts with Arabidopsis synaptotagmin A, which was also shown to interact with the major TMV MP PLS. Therefore, our findings have provided new insights to more fully understand the mechanism underlying plasmodesmal targeting of TMV MP.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Liu Y,Huang C,Zeng J,Yu H,Li Y,Yuan C

doi

10.1016/j.bbrc.2019.10.093

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

145-151

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(19)31989-8

journal_volume

521

pub_type

杂志文章

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