Cytokinesis in yeasts involves a family of proteins whose essential function is to bind Cdc14-family phosphatase and prevent this from being sequestered and inhibited in the nucleolus. This is the highly conserved N-terminus of a family of proteins which act as cytokinesis checkpoint controls by allowing cells to cope with cytokinesis defects. These proteins are required for rDNA silencing and mini-chromosome maintenance [1].

1: The nucleolar Net1/Cfi1-related protein Dnt1 antagonizes the septation initiation network in fission yeast. Jin QW, Ray S, Choi SH, McCollum D; Mol Biol Cell. 2007;18:2924-2934. PMID:17538026