免疫球蛋白超家族（IgSF）：

What is Immunoglobulins superfamily (IgSF)?

The immunoglobulin superfamily (IgSF) is a class of proteins that are associated with the adhesion, binding and recognition processes of cells. The term "immunoglobulin superfamily" (IgSF) initially referred to Igs and other proteins involved in the immune response and sharing the same 3D topology. The subsequent discovery of the Ig fold in proteins not functionally related to Igs led to the definition of new functional families, structurally similar to the Igs, such as that of the cytokine receptors or of the bacterial proteins containing the fibronectin type III module.

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