The Drosophila retinoblastoma binding protein 6 family member has two isoforms and is potentially involved in embryonic patterning.
Hull R, Oosthuysen B, Cajee UF, Mokgohloa L, Nweke E, Antunes RJ, Coetzer TH, Ntwasa M. Int J Mol Sci. 2015 May 6; 16(5):10242-66. Epub 2015 May 6.