Poly(A) binding protein interacting protein 2B is a protein that in humans is encoded by the PAIP2B gene.
[5] It is mainly expressed in the oocytes and fertilized eggs in mice.[6][7]
Most mRNAs, except for histones, contain a 3-prime poly(A) tail. Poly(A)-binding protein (PABP; see MIM 604679) enhances translation by circularizing mRNA through its interaction with the translation initiation factor EIF4G1 (MIM 600495) and the poly(A) tail. Various PABP-binding proteins regulate PABP activity, including PAIP1 (MIM 605184), a translational stimulator, and PAIP2A (MIM 605604) and PAIP2B, translational inhibitors .[8]
↑Derry MC, Yanagiya A, Martineau Y, Sonenberg N (2006). "Regulation of poly(A)-binding protein through PABP-interacting proteins". Cold Spring Harbor Symposia on Quantitative Biology. 71: 537–543. doi:10.1101/sqb.2006.71.061. PMID17381337.