Relocalization of Nuclear ALY Proteins to the Cytoplasm by the Tomato Bushy Stunt Virus P19 Pathogenicity Protein

Relocalization of nuclear ALY proteins to the cytoplasm by the tomato bushy stunt virus P19 pathogenicity protein.

The P19 protein of tomato bushy stunt virus (TBSV) is a multifunctional pathogenicity determinant involved in suppression of posttranscriptional gene silencing, virus movement, and symptom induction. Here, we report that P19 interacts with the conserved RNA-binding domain of an as yet uncharacterized family of plant ALY proteins that, in animals, are involved in export of RNAs from the nucleus ...

Translocation of Tomato bushy stunt virus P19 protein into the nucleus by ALY proteins compromises its silencing suppressor activity.

The P19 protein of Tomato bushy stunt virus is a potent suppressor of RNA silencing and, depending on the host species, is required for short- and long-distance virus movement and symptom production. P19 interacts with plant ALY proteins and relocalizes a subset of these proteins from the nucleus to the cytoplasm. Here we showed that coexpression by agroinfiltration in Nicotiana benthamiana of ...

Purification of Tomato Bushy Stunt Virus by Differential Centrifugation

On the rigidity of RNA in tomato bushy stunt virus.

The motional state of RNA in tomato bushy stunt rirlls, both in thr crystalline st,attx and in solution, has been invrstigat,ed IuGng 31P nuclear magnetic resonance methods. It, has been found that t’hr RNA is highly immobile in tho nativ Crus. and it is suggested that t,he lack of a high-resolution X-ray diffraction patt,crn for either the RNB or the N-terminal repions of the pro&n coat molcrn...

A newly identified role for Tomato bushy stunt virus P19 in short distance spread.

SUMMARY This study identified a role for the Tomato bushy stunt virus (TBSV) p19 protein (P19) in local lesion expansion on cowpea (Vigna unguiculata), and cell-to-cell movement in pepper (Capsicum annuum). The contribution to short distance spread in both hosts was strongly influenced by a cluster of charged amino acids between positions 72 and 78 on the 172 amino acid P19. Charged amino acids...