Transcription activator involved in G2/M transcription through its association with FKH2. Forms an activator complex with FKH2. During S phase of the cell cycle. Expression is cell cycle regulated by HCM1. Phosphorylation of Thr-319 by CDC28 is required for the interaction with FKH2 and recruitment to promoters. Present with 779 molecules/cell in log phase SD medium.