A, Positions of the transcription activation (TA), DNA binding (basic) and dimerization (ZIP) domains along the linear sequence of C/EBPα. The numbers below the C/EBPα diagram indicate the amino acid positions at the boundaries of the domains. Also shown are C/EBPα sequences involved in known actions with the indicated cell-cycle proteins: p107 , p21 , CDK2 [25,36], CDK4  and E2F . B, Schematic of the GFP fusions with full-length and mutant C/EBPα used in the studies reported here.
Liu et al. BMC Cell Biology 2002 3:6 doi:10.1186/1471-2121-3-6