NCIt definition : A protein which binds to enhancers having a conserved CCAAT sequence. CCAAT enhancer
binding proteins are a subclass of bZIP transcription factors that bind the CCAAT
DNA sequence as homo- or heterodimers with other family members, C/EBP-alpha, beta,
gamma, delta, epsilon. They include both transcriptional activators and repressors,
and some are involved in myelopoiesis.;