Class 12 Zoology simulations · Human Health and Disease

Structure of an antibody

Rotate an antibody molecule: two heavy and two light chains form a Y with two antigen-binding sites.

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What to notice

The tips of the Y carry variable regions that fit a specific antigen.

Key relation

Antibody = H₂L₂ (two heavy + two light chains)

Try this

Switch to IgM and count the antigen-binding sites.

What you can change

• Antibody class: choose IgG, IgA, IgM, IgE

More in Human Health and Disease

• Primary and secondary immune response
• Life cycle of Plasmodium (malaria)

See all Class 12 Zoology simulations or every Physica simulation.