PAAT (protein associated with ABC transporters), also known as C10orf88 (chromosome 10 open reading frame 88), is a protein in the human genome, encoding by the gene of the same name. It is predicted to be associated with ABC transporters, containing an ABC transporter domain, specifically Type II ABC Transporters. PAAT physically interacts with mitochondrial inner membrane ABC transporters, and plays a functional role in ferric nutrient transport and heme biosynthesis. The gene has been strongly associated with a rare form of Alzheimer's disease, and is primarily expressed in the cerebral cortex, testis, and thymus. It is mainly localized in the cytoplasm and nucleus.