This entry represents the WD repeat WDR12/Ytm1 family. Members of this familiy are ribosome biogenesis proteins. In humans, WDR12 is a component of the PeBoW complex, which is required for maturation of 28S and 5.8S ribosomal RNAs and formation of the 60S ribosome []. In Saccharomyces cerevisiae, Ytm1 is a component of the NOP7 complex, which is required for maturation of the 25S and 5.8S ribosomal RNAs and formation of the 60S ribosome [].