CEBP Beta: Proteins and Enzymes

CCAAT/enhancer-binding proteins (C/EBP) consist of a family of transcription factors that play an important role in regulating the balance between cell growth and differentiation. The various isoforms of C/EBP (alpha, beta, gamma, delta, epsilon, zeta) exhibit similar DNA-binding specificities and contain a leucine zipper dimerization domain (1). A number of serine targets of PKA have been identified in C/EBP, suggesting its activities are post-translationally regulated by cAMP (2). Even though, it has been show that C/EBP beta occurs predominantly as a heterodimer (3). C/EBP beta gamma readily heterodimerize with each other as well as with C/EBP alpha (4). Additionally, 3 isoforms of C/EBP beta can be detected (LAP, LAP,LIP)