Members of this family, that are synthesised by Saccharomycetes, adopt a structure consisting of a four-stranded beta-sheet, with strand order beta2-beta1-beta4-beta3, and two alpha-helices, with an overall topology of beta-beta-alpha-beta-beta-alpha. They have no known function [1].

1: A novel member of the split betaalphabeta fold: Solution structure of the hypothetical protein YML108W from Saccharomyces cerevisiae. Pineda-Lucena A, Liao JC, Cort JR, Yee A, Kennedy MA, Edwards AM, Arrowsmith CH; Protein Sci. 2003;12:1136-1140. PMID:12717036