Fission yeast has three kinetochore protein complexes. Two complexes, Sim4 and Ndc80-MIND-Spc7 (NMS), are constitutive components, whereas the third complex, DASH, is transiently associated with kinetochores only in mitosis and is required for precise chromosome segregation. The Sim4 complex functions as a loading dock for the DASH complex. Sim4 consists of a number of different proteins including Ftas 1-7 and Dad1 [1].

1: Molecular analysis of kinetochore architecture in fission yeast. Liu X, McLeod I, Anderson S, Yates JR 3rd, He X; EMBO J. 2005;24:2919-2930. PMID:16079914