PUF-5 is an RNA-binding protein that interacts with the consensus sequence 5'-CUCUGUAUCUUGU-3' within mRNA 3'-UTRs. This interaction plays a crucial role in regulating mRNA expression and stability. PUF-5 exhibits functional redundancy with puf-6 and puf-7 in processes such as oocyte formation and organization, early embryonic cell divisions, and the repression of glp-1 and other maternal mRNA transcripts during late oogenesis.