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See detailFunctional study of Arabidopsis thaliana ASF/SF2-like pre-mRNA SR splicing factors
Stankovic, Nancy ULg; Tillemans, Vinciane; Leponce, Isabelle et al

Poster (2012, July 04)

Detailed reference viewed: 43 (2 ULg)
See detailRSZ22, a dynamic nucleocytoplasmic shuttling SR splicing factor
Tillemans, Vinciane ULg; Rausin, Glwadys; Stankovic, Nancy ULg et al

Poster (2011, March)

Detailed reference viewed: 35 (14 ULg)
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See detailDynamic Nucleocytoplasmic Shuttling of an Arabidopsis SR Splicing Factor: Role of the RNA-Binding Domains
Rausin, Glwadys ULg; Tillemans, Vinciane ULg; Stankovic, Nancy ULg et al

in Plant Physiology (2010), 153

Serine/arginine-rich (SR) proteins are essential nuclear-localized splicing factors. We have investigated the dynamic subcellular distribution of the Arabidopsis (Arabidopsis thaliana) RSZp22 protein, a ... [more ▼]

Serine/arginine-rich (SR) proteins are essential nuclear-localized splicing factors. We have investigated the dynamic subcellular distribution of the Arabidopsis (Arabidopsis thaliana) RSZp22 protein, a homolog of the human 9G8 SR factor. Little is known about the determinants underlying the control of plant SR protein dynamics, and so far most studies relied on ectopic transient overexpression. Here, we provide a detailed analysis of the RSZp22 expression profile and describe its nucleocytoplasmic shuttling properties in specific cell types. Comparison of transient ectopic- and stable tissue-specific expression highlights the advantages of both approaches for nuclear protein dynamic studies. By site-directed mutagenesis of RSZp22 RNA-binding sequences, we show that functional RNA recognition motif RNP1 and zinc-knuckle are dispensable for the exclusive protein nuclear localization and speckle-like distribution. Fluorescence resonance energy transfer imaging also revealed that these motifs are implicated in RSZp22 molecular interactions. Furthermore, the RNA-binding motif mutants are defective for their export through the CRM1/XPO1/Exportin-1 receptor pathway but retain nucleocytoplasmic mobility. Moreover, our data suggest that CRM1 is a putative export receptor for mRNPs in plants. [less ▲]

Detailed reference viewed: 60 (31 ULg)
See detailFunctional study of Arabidopsis thaliana ASF/SF2-like pre-mRNA SR splicing factors
Stankovic, Nancy ULg; Tillemans, Vinciane; Hanikenne, Marc et al

Poster (2010, January 26)

Detailed reference viewed: 14 (5 ULg)