Nucleotide sequence of a cDNA for canine amylin

Canine amylin cDNA was cloned and sequenced from a dog pancreas library using oligonucleotide probes corresponding to portions of human amylin. The sequence reported here is significantly different from an incomplete sequence previously reported. The non-amyloidogenic canine mature peptide is 89% and 95% identical to its amyloidogenic human and cat homologues, respectively. Both the dog and cat peptides are identical over the proposed amyloidogenic region, amino acids 20-29. Hydropathy plots comparing these three peptides are nearly identical suggesting that the primary sequence of amylin is in itself insufficient to explain pancreatic amyloid formation.