Abstract:
:The Crinivirus, Lettuce infectious yellows virus (LIYV) has a bipartite, positive-sense ssRNA genome. LIYV RNA 1 encodes replication-associated proteins while RNA 2 encodes proteins needed for other aspects of the LIYV life cycle. LIYV RNA 1 ORF 2 encodes P34, a trans enhancer for RNA 2 accumulation. Here we show that P34 is a sequence non-specific ssRNA-binding protein in vitro. P34 binds ssRNA in a cooperative manner, and the C-terminal region contains the RNA-binding domain. Topology predictions suggest that P34 is a membrane-associated protein and the C-terminal region is exposed outside of the membrane. Furthermore, fusions of P34 to GFP localized to the perinuclear region of transfected protoplasts, and colocalized with an ER-specific dye. This localization was of interest since LIYV RNA 1 replication (with or without P34 protein) induced strong ER rearrangement to the perinuclear region. Together, these data provide insight into LIYV replication and possible functions of P34.
journal_name
Virologyjournal_title
Virologyauthors
Wang J,Stewart LR,Kiss Z,Falk BWdoi
10.1016/j.virol.2010.04.006subject
Has Abstractpub_date
2010-07-20 00:00:00pages
67-77issue
1eissn
0042-6822issn
1096-0341pii
S0042-6822(10)00241-2journal_volume
403pub_type
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