The Cnd1-3 proteins are the three non-SMC (structural maintenance of chromosomes) proteins that go to make up the mitotic condensation complex along with the two SMC protein families, XCAP-C and XCAP-E, (or in the case of fission yeast, Cut3 and Cut14). The five-member complex seems to be conserved from yeasts to vertebrates. This domain is the C-terminal, cysteine-rich domain of Cnd3. The complex shuttles between the nucleus, during mitosis, and the cytoplasm during the rest of the cycle. Thus this family is made up of the C-termini of XCAP-Gs, Ycg1 and Ycs5 members.

1: Fission yeast condensin complex: essential roles of non-SMC subunits for condensation and Cdc2 phosphorylation of Cut3/SMC4. Sutani T, Yuasa T, Tomonaga T, Dohmae N, Takio K, Yanagida M; Genes Dev 1999;13:2271-2283. PMID:10485849

2: Chromosome condensation: packaging the genome. Uhlmann F; Curr Biol. 2001;11:R384-R387. PMID:11378401