Arabidopsis tonoplast proteins TIP1 and TIP2 interact with the cucumber mosaic virus 1a replication protein.
The cucumber mosaic virus (CMV) replication complex has previously been shown to associate with cellular membranes. However, it remains unknown whether any host factors participate in this process. In this study, five groups of Arabidopsis tonoplast intrinsic protein (TIP) genes were isolated and the proteins they encoded were evaluated with regard to their interactions with CMV proteins. TIP1 and TIP2 were found to interact with the CMV 1a protein in the Sos recruitment system, whereas no interactions with the other three TIP subgroups were observed in this assay. The interaction of CMV 1a with the TIP1 and TIP2 proteins was confirmed via co-immunoprecipitation assays. Additionally, CMV 1a co-localized with TIP1 and TIP2 in transfected Arabidopsis protoplasts. The findings of this study suggest that members of two TIP subfamilies might affect CMV replication via interaction with CMV 1a in the tonoplasts.
Kim
Min Jung
MJ
School of Life Sciences and Biotechnology, Korea University, 1 5-ga Anam-dong, Sungbuk-gu, Seoul 136-701, Republic of Korea.
Kim
Hwa Ran
HR
School of Life Sciences and Biotechnology, Korea University, 1 5-ga Anam-dong, Sungbuk-gu, Seoul 136-701, Republic of Korea.
Paek
Kyung-Hee
KH
School of Life Sciences and Biotechnology, Korea University, 1 5-ga Anam-dong, Sungbuk-gu, Seoul 136-701, Republic of Korea.
D020346:Aquaporins / Q000235:genetics / Q000378:metabolism*; D017360:Arabidopsis / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D017799:Cucumovirus / Q000502:physiology*; D008780:Methyltransferases / Q000235:genetics / Q000378:metabolism*; D011523:Protoplasts / Q000378:metabolism; D014162:Transfection; D020798:Two-Hybrid System Techniques; D014764:Viral Proteins / Q000235:genetics / Q000378:metabolism*; D014779:Virus Replication
D020346:Aquaporins; D029681:Arabidopsis Proteins; C500688:TIP2;1 protein, Arabidopsis; D014764:Viral Proteins; C508104:1a protein, cucumber mosaic virus; D008780:Methyltransferases