| ID | Symbol | Description | Aliases |
| YCR086W | CSM1 | Nucleolar protein that forms a complex with Lrs4p which binds Mam1p at kinetochores during meiosis I to mediate accurate chromosome segregation, may be involved in premeiotic DNA replication; possible role in telomere maintenance | | |
| YMR198W | CIK1 | Kinesin-associated protein required for both karyogamy and mitotic spindle organization, interacts stably and specifically with Kar3p and may function to target this kinesin to a specific cellular role; has similarity to Vik1p | | |
| YPR141C | KAR3 | Minus-end-directed microtubule motor that functions in mitosis and meiosis, localizes to the spindle pole body and localization is dependent on functional Cik1p, required for nuclear fusion during mating; potential Cdc28p substrate | OSR11 | |
| YDR439W | LRS4 | Protein involved in rDNA silencing; positively charged coiled-coil protein with limited similarity to myosin | | |