Identification of host cellular targets of AC4 and AV2 proteins of tomato leaf curl palampur virus and their sub-cellular localization studies
Abstract
Tomato leaf curl palampur virus (ToLCPalV) is a bipartite begomovirus with genome organization typical of old world begomoviruses. It infects commercially important crops and weeds in the Asian subcontinent. Apart from other proteins, the DNA-A of the virus encodes AV2 and AC4 proteins of approximately 13.73 and 6.7 kDa, respectively. In case of other begomoviruses, previous studies have shown the role of AV2 and AC4 proteins in virus movement, pathogenesis and suppression of gene silencing. However, the ToLCPalV proteins are significantly variable in comparison to closest relative and hence there is a need to work out their functions. In this study, we identified 9 cellular proteins of tomato that interact with AV2 and AC4 proteins, through yeast two hybrid screening. Upon sequence analysis, these interactors were identified as cysteine protease, katanin p60 ATPase-containing subunit A-like, guanine deaminase, NADH dehydrogenase (ubiquinone) iron-sulfur protein, glyceraldehyde-3-phosphate dehydrogenase B, 60S acidic ribosomal P0 protein, acyl co-A dehydrogenase IBR3, oxygen-evolving enhancer protein 1 and peroxisomal membrane protein 11D. These proteins play a vital role in protein degradation, plant defense response, microtub...Continue Reading
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