Component of the spindle pole body (SPB) required for the proper execution of spindle pole body (SPB) duplication. Potential role in cross-linking filaments or anchoring other molecules. It is essential for growth (By similarity). Homodimer. Component of the SPC110 complex containing at least CMD1, SPC29 and SCP110. Interacts with SPC97 and SPC98. Tightly associated with the nucleus. It is present in a granular pattern that excludes the nucleolus. Belongs to the SPC110 family.