DNA binding component of the SBF complex (Swi4p-Swi6p)%3B a transcriptional activator that in concert with MBF (Mbp1-Swi6p) regulates late G1-specific transcription of targets including cyclins and genes required for DNA synthesis and repair%3B Slt2p-independent regulator of cold growth%3B acetylation at two sites%2C K1016 and K1066%2C regulates interaction with Swi6p