What holds the small peptide fragment of an antigen at the surface of an antigen presenting cell?
A)phosphotyrosine motifs
B)MHC proteins
C)T-cell receptors
D)phosphatidylinositol
E)B-cell receptors

Question

Quizplus · Accepted Answer

MHC (major histocompatibility complex) proteins hold and present the small peptide fragment of an antigen at the surface of an antigen presenting cell. This allows T-cell receptors to recognize and interact with the antigen peptide-MHC complex.

What Holds the Small Peptide Fragment of an Antigen at the Surface