Transcriptional modulator with roles in meiotic regulation and silencing. Acts either as an adapter to facilitate nuclear import by KAP122 of the RNR2-RNR4 herodimer, also called beta-beta' subunit, which corresponds to the small subunit of the ribonucleotide reductase (RNR); or as an anchor to retain RNR2-RNR4 in the nucleus. Interacts with KAP122. Shuttles between the nucleus and the cytoplasm. Present with 7750 molecules/cell in log phase SD medium.