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Microbiology Immunology Pa 2 ( Hybridoma Technology, Complement Pathways, Interferon, Structure and Functions of Immune Cells ) 83c53c2b

All are true regarding superantigens except?

A
Activate very large numbers of B cells
B
Bind outside the antibody binding groove
C
Are medium sized proteins
D
Cause release of cytokines
High-Yield Explanation
Superantigens activate very large number of T cells. NON -MHC restricted They are medium sized proteins which Attach to TCR on lateral side on Vb (Variable) domain, outside the antibody binding groove. They cause release of cytokines that induce >20% of T lymphocytes activation resulting in massive proliferation of T lymphocytes. They have high resistance to proteases.

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