[5] This gene encodes a poly(A)-binding protein that binds to the polyA tail found at the 3' end of most eukaryotic mRNAs.

It is thought to play a role in the regulation of mRNA metabolic processes in the cytoplasm.

This gene is located in a gene-poor region within the X-specific 13d-sY43 subinterval of the chromosome Xq21.3/Yp11.2 homology block.

It is located close to translocation breakpoints associated with premature ovarian failure, and is therefore a potential candidate gene for this disorder.

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