PAN/APPLE-like domain; present in N-terminal (N) domains of plasminogen/ hepatocyte growth factor proteins, plasma prekallikrein/coagulation factor XI and microneme antigen proteins, plant receptor-like protein kinases, and various nematode and leech anti-platelet proteins. Common structural features include two disulfide bonds that link the alpha-helix to the central region of the protein. PAN domains have significant functional versatility, fulfilling diverse biological functions by mediating protein-protein or protein-carbohydrate interactions.
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