This family is not required for survival of S.cerevisiae, but its deletion leads to heightened sensitivity to oxidative stress. It appears to be involved in N-glycosylation, and resides in the endoplasmic reticulum.

1: EOS1, whose deletion confers sensitivity to oxidative stress, is involved in N-glycosylation in Saccharomyces cerevisiae. Nakamura T, Ando A, Takagi H, Shima J; Biochem Biophys Res Commun. 2007;353:293-298. PMID:17187761