. "The nucleotide sequence analysis of cloned cDNA for VIP precursor from rat cerebral cortex reveals that the precursor contains both rat VIP and PHI-27. The deduced primary structure of rat VIP is identical with human VIP. The amino acid sequence of rat PHI-27 differs by 4 amino acids from human PHM-27. When each VIP precursor is divided functionally into 6 domains, the amino acid sequence homology between rat and human precursors ranges from 69 to 100%. In contrast, any domain exhibits an essentially equal degree of nucleotide sequence homology." . . . "FEBS Lett." . "Okamoto H." . "Nishizawa M." . "Hayakawa Y." . "Yanaihara N." . "1985"^^ . "55-59" . "Nucleotide sequence divergence and functional constraint in VIP precursor mRNA evolution between human and rat." . "183" . "doi:10.1016/0014-5793(85)80953-4" .