Antibody — Free Biology Illustration

Biology

Antibody

Classic soluble antibody (immunoglobulin) depicted as a small, smooth, symmetrical Y-shaped protein molecule with two identical upward-curving antigen-binding arms and one downward central stem. The structure has softly rounded contours in a clean scientific cartoon or molecular icon style, sometimes slightly ribbon-like rather than atomically detailed. A small central hinge region joins the arms and stem, implying two heavy chains and two light chains linked by disulfide bonds. The ends of the two upper arms have slightly thickened, bulbous, tapered, or otherwise highlighted rounded tips to indicate the variable antigen-binding sites, while the lower stem may be somewhat narrow or slightly thicker. Typically colored pale blue, light blue, lavender, light purple, or white, with subtle shading and no transmembrane anchor.

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