The IAPP gene, encoding islet amyloid precursor protein, is transcribed and its mRNA is translated. IAPP transcription is positively regulated by PDX1 transcription factor. These events and interactions are inferred from corresponding ones studied in molecular detail in the mouse.
Amylin (islet amyloid polypeptide, diabetes associated peptide) is a 37 amino acid peptide first purified from amyloid deposits in the pancreatic islets of type 2 diabetic patients (Nishi M et al, 1989). It is a product of the islet B-cell, along with insulin and probably has a hormonal role in the regulation of nutrient intake. Amylin receptors are multimeric complexes, formed by CT receptor (Gorn AH et al, 1992) interaction with receptor activity modifying proteins (RAMPs) (McLatchie LM et al, 1998). The CT receptor interacts with the three RAMPs, generating multiple subtypes of amylin receptor (AMY1-3).