The CPEB protein Orb2 has multiple functions during spermatogenesis in Drosophila melanogaster.
Xu S, Hafer N, Agunwamba B, Schedl P. The CPEB protein Orb2 has multiple functions during spermatogenesis in Drosophila melanogaster. PLoS Genet. 2012; 8(11):e1003079.