The function of POF1B (POF1B actin binding protein, Ensembl gene identifier ENSG00000124429) is as follows. Plays a key role in the organization of epithelial monolayers by regulating the actin cytoskeleton. May be involved in ovary development. {ECO:0000269|PubMed:16773570, ECO:0000269|PubMed:21940798}.