Probable acetyl-CoA transporter necessary for O-acetylation of gangliosides (PubMed:10570973). Negatively regulates BMP signaling (By similarity). Expressed in all adult tissues examined including brain, heart, kidney, liver and spleen, with maximum expression in liver and kidney. Highly expressed at day 7 of embryonic development. Detected at lower levels throughout the later stages of embryonic development. Belongs to the SLC33A transporter family.