這個基因編碼一種多聚（a）結合蛋白。蛋白質在細胞核和細胞質之間穿梭，通過rna識別基序與真核信使rna的3'聚（a）尾結合。該蛋白與poly（A）的結合促進了核糖體的募集和翻譯起始；poly（A）縮短也是mRNA衰變的第一步該基因是一個小基因家族的一部分，包括三個蛋白質編碼基因和幾個假基因
This gene encodes a poly(A) binding protein. The protein shuttles between the nucleus and cytoplasm and binds to the 3' poly(A) tail of eukaryotic messenger RNAs via RNA-recognition motifs. The binding of this protein to poly(A) promotes ribosome recruitment and translation initiation; it is also required for poly(A) shortening which is the first step in mRNA decay. The gene is part of a small gene family including three protein-coding genes and several pseudogenes.[provided by RefSeq, Aug 2010]