SAM (sterile alpha motif) domain repeat 1 of kazrin proteins is a protein-protein interaction domain. The long isoform of kazrin contains three copies (repeats) of SAM domain. Kazrin can interact with periplakin. It is involved into interplay between desmosomes and in adheren junctions. Additionally kazrins play a role in regulation of intercellular differentiation, junction assembly, and cytoskeletal organization.
Jiyao W et al.(2023). "The conserved domain database in 2023.",