YHR085W IPI1 SGDID:S000001127, Chr VIII from 276764-277768, Genome Release 64-1-1, Verified ORF, "Essential component of the Rix1 complex (with Rix1p and Ipi3p) that is required for processing of ITS2 sequences from 35S pre-rRNA; Rix1 complex associates with Mdn1p in pre-60S ribosomal particles"