Acts as a component of the NMS (Ndc80-MIND-Spc7) super complex which has a role in kinetochore function during late meiotic prophase and throughout the mitotic cell cycle. Acts as a component of the essential kinetochore-associated NDC80 complex, which is required for chromosome segregation and spindle checkpoint activity. Component of the NDC80 complex, which consists of ndc80, nuf2, spc24 and spc25. Component of the NMS super complex which consists of mis12, mis13, mis14, ndc80, nnf1, nuf2, sos7, spc7, spc24 and spc25. Associated with kinetochores. Belongs to the NDC80/HEC1 family.