Overexpressor:CKB3 overexpressor is early flowering under both SD and LD conditions. [Sugano et al., 1999]Remarks: Overexpression of CKB3 shortens the ciradian period of CCA1 and LHY expression. [Sugano et al., 1999]Function:Plays a complex role in regulating the basal catalytic activity of the alpha subunit (By similarity). Stimulates the binding of CCA1 to promoters. [Data from UniProt]