The Fab portion of the antibody has the complementarity-determining regions (red) providing specificity for binding an epitope of an antigen. The Fc portion (purple) directs the biological activity of the antibody. (S-S = disulfide bond; N = amino terminal of glycoprotein; C = carboxy terminal of glycoprotein; CHO = carbohydrate.)
Last updated: August, 2019
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Gary Kaiser