The monopolin-like pcs1/mde4 complex is essential for accurate chromosome segregation during mitosis and meiosis II. May clamp together microtubule binding sites on the same kinetochore, preventing merotelic attachment of microtubules. In contrast to its S.cerevisiae ortholog CSM1, is not required ofr mono-orientation during meiosis I. Component of a monopolin-like complex composed of pcs1 and mde4. The complex associates with the kinetochore. Nucleolar during G2 (PubMed:12689592). Localizes to the centromeres throughout most stages of vegetative growth and meiotic development apart from the horse tail stage of prophase I (PubMed:12689592). Localizes to the central core of the centromere (PubMed:17627824).