J. Biol. Chem., Vol. 255, Issue 17, 8046-8049, 09, 1980
Amino acid sequence homology between rat alpha-fetoprotein and albumin at the COOH-terminal regions
WS Liao, RW Hamilton and JM Taylor
The nucleotide sequence of the 3'-terminal untranslated region and a
portion of the coding region of rat alpha-fetoprotein mRNA has been
determined from a cloned double-stranded cDNA. the amino acid sequence of
the COOH-terminal portion of alpha-fetoprotein was inferred from the
nucleotide sequence and compared to the amino acid sequence of the
corresponding portion of rat, bovine, and human albumin. A striking
homology in amino acid sequence between alpha-fetoprotein and albumin was
observed. These results confirm earlier suggestions that the two proteins
are closely related in structure and probably arose from a common ancestral
gene.