The methylmalonic aciduria related genes, Mmaa, Mmab, and Mut, are broadly expressed in placental and embryonic tissues during mouse organogenesis

► Mmaa, Mmab and Mut are ubiquitously expressed at E10.5 of mouse development. ► Mmaa, Mmab and Mut have cell-type specific expression patterns during organogenesis. ► The proteins encoded by Mmaa, Mmab and Mut may not be ubiquitously required.