"This application is concerned with the structural and functional characterization of the RZZ protein complex, a critical constituent of metazoan kinetochores. The RZZ, a 400-kDa trimer, is named after the initials of its components, Rod, Zwilch and Zw10. The RZZ is implicated in the execution of mitosis, the process of equal partitioning of the genetic material. In mitosis, the sister chromatids ...