YLR330W CHS5 SGDID:S000004322, Chr XII from 787664-789679, Genome Release 64-1-1, Verified ORF, "Component of the exomer complex, which also contains Csh6p, Bch1p, Bch2p, and Bud7p and is involved in export of selected proteins, such as chitin synthase Chs3p, from the Golgi to the plasma membrane"