Drosophila Rbp6 is an orthologue of vertebrate Msi-1 and Msi-2, but does not function redundantly with dMsi to regulate germline stem cell behaviour.
Siddall NA, Kalcina M, Johanson TM, Monk AC, Casagranda F, Been RP, McLaughlin EA, Hime GR. PLoS One. 2012; 7(11):e49810. Epub 2012 Nov 27.