MyBioSource.com's KHDRBS3 Antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: ELISA, and Western Blot. The KHDRBS3 Antibody was generated using KHDRBS3 as the antigen and it reacts with Human, Mouse, and Rat.
Description
Function: RNA-binding protein that plays a role in the regulation of alternative splicing and influences mRNA splice site selection and exon inclusion. Binds preferentially to the 5'-[AU]UAAA-3' motif in vitro. Binds optimally to RNA containing 5'-[AU]UAA-3' as a bipartite motif spaced by more than 15 nucleotides. Binds poly(A). RNA-binding abilities are down-regulated by tyrosine kinase PTK6 (PubMed:10564820, PubMed:19561594, PubMed:26758068). Involved in splice site selection of vascular endothelial growth factor (PubMed:15901763). In vitro regulates CD44 alternative splicing by direct binding to purine-rich exonic enhancer (By similarity). Can regulate alternative splicing of neurexins NRXN1-3 in the laminin G-like domain 6 containing the evolutionary conserved neurexin alternative spliced segment 4 (AS4) involved in neurexin selective targeting to postsynaptic partners such as neuroligins and LRRTM family members (PubMed:26758068). Targeted, cell-type specific splicing regulation of NRXN1 at AS4 is involved in neuronal glutamatergic synapse function and plasticity (By similarity). May regulate expression of KHDRBS2/SLIM-1 in defined brain neuron populations by modifying its alternative splicing (By similarity). Can bind FABP9 mRNA (By similarity). May play a role as a negative regulator of cell growth. Inhibits cell proliferation.
Subunit Structure: Self-associates to form homooligomers; dimerization increases RNA affinity (PubMed:26758068). Interacts with KHDRBS2/SLM-1 (By similarity). Interacts with KHDRBS1/SAM68; heterooligomer formation of KHDRBS family proteins may modulate RNA substrate specificity (PubMed:10332027). Interacts with the splicing regulatory proteins SFRS9, SAFB and YTHDC1. Interacts with HNRPL (By similarity). Interacts with RBMX, RBMY1A1, p85 subunit of PI3-kinase, SERPINB5 (PubMed:10564820, PubMed:10332027, PubMed:10749975, PubMed:21725612). Interacts with SIAH1 which promotes targeting for degradation (PubMed:15163637).
Post-translational Modifications: Phosphorylated on tyrosine residues. Isoform 1 C-terminal region is tyrosine-rich, but isoform 2 lacking this C-terminal region is also tyrosine-phosphorylated.
Similarity: The proline-rich site binds the SH3 domain of the p85 subunit of PI3-kinase. Belongs to the KHDRBS family