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In this study, we uncover an alternative role for the ESCRT-0 component hepatocyte growth factor-regulated tyrosine kinase substrate (HRS) in promoting the constitutive recycling of transmembrane proteins. We find that endosomal localization of the actin nucleating factor Wiscott-Aldrich syndrome protein and SCAR homologue (WASH) requires HRS, which occupies adjacent endosomal subdomains
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Cold induction of serine and arginine rich splicing factor 5 (SRSF5) is independent of cold-inducible RNA-binding protein (CIRP) and RNA-binding motif protein 3 (RBM3).
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Study found that SRSF5 is a novel target of SRSF3. SRSF5 is overexpressed in oral squamous cell carcinoma (OSCC) and functions as an oncogene. Its downregulation in OSCC cell lines slows cell growth, cycle progression, and tumor growth. The expression of SRSF5 seems to controlled by an autoregulation mechanism.
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upon glucose intake, the splicing factor SRSF5 is specifically induced through Tip60-mediated acetylation on K125, which antagonizes Smurf1-mediated ubiquitylation. SRSF5 promotes the alternative splicing of CCAR1 to produce CCAR1S proteins, which promote tumor growth by enhancing glucose consumption and acetyl-CoA production.
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we show that ErbB3 interacts with the ESCRT-0 subunit Hrs both in the presence and absence of heregulin. This indicates an ESCRT-mediated sorting of ErbB3 to late endosomes and lysosomes, and in line with this we show that impaired ESCRT function leads to an endosomal accumulation of ErbB3.
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the up-regulated expression of SRSF 5-7 proteins in LC with much more profound up-regulation in SCLC than in NSCLC and suggest that up-regulation of the SRSFs is related to SCLC proliferation. Moreover, we identified SRSF5 as a novel detection marker for SCLC and pleural metastatic cancer cells.
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this study demonstrates that HRS acts as a key component of TLR7 signaling to orchestrate immune and inflammatory responses during EV71 infection
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Posttranslational modification of SR proteins underlies the regulation of their mRNA export activities and distinguishes pluripotent from differentiated cells.
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Enhanced SRSF5 Protein Expression Reinforces Lamin A mRNA Production in HeLa Cells and Fibroblasts of Progeria Patients
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Suggest that SRp40 might be associated with GRalpha transcripts in systemic lupus erythematosus patients.
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We show that changes in alternative splicing of hnRNP A/B, affected by up regulation of SRSF5 (SRp40) or by treatment with C6-ceramide, occur within supraspliceosomes.
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Relative levels of SRp20, SRp30c, and SRp40 in TM cells control differential expression of the two alternatively spliced isoforms of the GR and thereby regulate GC responsiveness.
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Here, the authors report that specific SR proteins, particularly SRp40 and SRp55, promote human immunodeficiency virus type 1 (HIV-1) Gag translation from unspliced (intron-containing) viral RNA.
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SRp40 antagonizes ASF/SF2 and SRp55 by competing for binding to certain sites in exon 5, thereby promoting TF exon 5 exclusion, an event unique to asTF biosynthesis.
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role in c-H-ras alternative splicing regulation
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SR proteins 9G8, SC35, ASF/SF2, and SRp40 have effects on the utilization of the A1 to A5 splicing sites of HIV-1 RNA
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activates the ESE (exon splicing enhancer) which regulates HIV-1 rev, env, vpu, and nef gene expression
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SRp40 regulates the switch in splicing from production of CREMtau(2)alpha to CREMalpha
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SC35, SRp40, and heterogeneous nuclear ribonucleoprotein A1 interact competitively at the HIV-1 Tat exon 2 splicing site
