May be involved in cell differentiation. Expressed in oocytes in primary through antral-stage follicles. Expressed in liver and ovary. Expressed in preimplantation embryo. Expressed in liver at 16 dpc but not at 13 dpc. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. Belongs to the PLAC1 family.