Figure 10.

A map of the C/EBPα (A) and C/EBPβ (B) mRNAs. The positions of the AUG initiation sites within each mRNA and the Kozak sequences relative to the A (+1) in each AUG are indicated. The numbers indicate the position of the As in each initiation codon. The molecular masses of isoforms that can be formed by initiation at the designated AUG sites are depicted in parentheses behind each Kozak sequence. The MPGEL is the amino acid sequence of the C/EBPα sORF and MPPAAARLL is the amino acid sequence of the C/EBPβ sORF.