YDL128W VCX1 SGDID:S000002286, Chr IV from 232652-233887, Genome Release 64-1-1, Verified ORF, "Vacuolar membrane antiporter with Ca2+/H+ and K+/H+ exchange activity, involved in control of cytosolic Ca2+ and K+ concentrations; has similarity to sodium/calcium exchangers, including the bovine Na+/Ca2+,K+ antiporter"