YJR120W YJR120W SGDID:S000003881, Chr X from 647126-647476, Genome Release 64-1-1, Verified ORF, "Protein of unknown function; essential for growth under anaerobic conditions; mutation causes decreased expression of ATP2, impaired respiration, defective sterol uptake, and altered levels/localization of ABC transporters Aus1p and Pdr11p"