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Representative MHC IgSF domains with the structurally important residues iC25-iC80 cysteine pair, iW39, iL68, and iW95, or their replacements. Highlighted residues are shown with individual colors per position and with spheres format presentation for sidechains. (A, B) Are from different angles. Residue coloring in (B) is as in (A), but In (A) the i95 residues are not highlighted.
