Poly(C)-binding proteins (PCBPs) are a family of RNA-binding proteins that play diverse roles in post-transcriptional and transcriptional regulation, including mRNA stabilization and translation control.
The poly(C) binding proteins (PCBPs) are encoded at five dispersed loci in the mouse and human genomes. These proteins, which can be divided into two groups, hnRNPs K/J and the alphaCPs (alphaCP1-4), are linked by a common evolutionary history, a shared triple KH domain configuration, and by their poly(C) binding specificity. Given these conserved characteristics it is remarkable to find a substantial diversity in PCBP functions. The roles of these proteins in mRNA stabilization, translational activation, and translational silencing suggest a complex and diverse set of post-transcriptional control pathways. Their additional putative functions in transcriptional control and as structural components of important DNA-protein complexes further support their remarkable structural and functional versatility. Clearly the identification of additional binding targets and delineation of corresponding control mechanisms and effector pathways will establish highly informative models for further exploration.
Makeyev et al. (2002) reported a review. Poly(C)-binding proteins (PCBPs) was evaluated. Poly(C)-binding proteins (PCBPs) are a family of RNA-binding proteins that play diverse roles in post-transcriptional and transcriptional regulation, including mRNA stabilization and translation control.
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