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Structures of Ly49/MHC class I complexes. Domains are labeled. The α1, α2 and α3 domains of the MHC class I heavy chain are rose; β2m is orange; the peptide in ball-and-stick representation is grey; the Ly49 molecules are green. (A) Ribbon diagram of Ly49A bound to H-2Dd (PDB accession code 1QO3). (B) Structure of Ly49C in complex with H-2Kb (Deng L, Dam J, Schuck P, Mariuzza RA, unpublished data).
