ABCA13 [SEP] chromosome
ABCA13
ATP-binding cassette sub-family A member 13 also known as ABCA13 is a protein that in humans is encoded by the "ABCA13" gene on chromosome 7. It belongs to the wide ATP-binding cassette family of proteins. The protein contains 5058 residues, and is currently the largest known protein of the ABC family.
Clinical significance.
One study suggests that rare variations and mutations of the gene may be linked to psychiatric disorders such as schizophrenia, bipolar disorder, and depression.
first subgroup consists of seven genes that map to six different chromosomes. These are ABCA1, ABCA2, ABCA3, and ABCA4, ABCA7, ABCA12, and ABCA13. The other subgroup consists of ABCA5 and ABCA6 and ABCA8, ABCA9 and ABCA10. A8-10.
All of subgroup 2 is organized into a head to tail cluster of chromosomes on chromosome 17q24. Genes in this second subgroup are distinguished from ABCA1-like genes by having 37-38 exons as opposed to the 50 exons in ABCA1. 
The ABCA1 subgroup is implicated