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Structure description. (a) Cartoon representation of the TCR/pMHC/CD8 system: MHC (grey), β 2-microglobulin (ochre), peptide (black), TCR α-chain (red), TCR β-chain (blue), and CD8 α 1 and CD8 α 2 (cyan). (b, c) Cartoon representation of the pMHC/CD8 complex: α-helix Gα 1 (yellow), α-helix Gα 2 (orange), α 3-domain (purple), β-sheet (lime), and CD8 α 1 and CD8 α 2 (cyan).
