Binds to the dendritic targeting element and may play a role in mRNA trafficking. Part of a ternary complex that binds to the downstream control sequence (DCS) of the pre-mRNA. Mediates exon inclusion in transcripts that are subject to tissue-specific alternative splicing. May interact with single-stranded DNA from the far-upstream element (FUSE). May activate gene expression. Also involved in degradation of inherently unstable mRNAs that contain AU-rich elements (AREs) in their 3'-UTR, possibly by recruiting degradation machinery to ARE-containing mRNAs.
Background References
1. Min H et al. A new regulatory protein, KSRP, mediates exon inclusion through an intronic splicing enhancer. Genes Dev 11:1023-1036(1997).
2. Davis-Smyth T et al. The far upstream element-binding proteins comprise an ancient family of single-strand DNA-binding transactivators. J Biol Chem 271:31679-31687(1996).
Sequence Similarity
Belongs to the KHSRP family.
Tissue Specificity
Detected in neural and non-neural cell lines.
Post-translational Modification
Phosphorylation at Ser-193 leads to the unfolding of the unstable KH domain 1, creating a site for 14-3-3 YWHAZ binding, which promotes nuclear localization and impairs the RNA degradation function.