1DZ1:
reference: The structure of mouse HP1 suggests a unique mode of single peptide recognition by the shadow chromo domain dimer., Brasher SV, Smith BO, Fogh RH, Nietlispach D, Thiru A, Nielsen PR, Broadhurst RW, Ball LJ, Murzina NV, Laue ED, EMBO J 2000 Apr 3;19(7):1587-97. PMID: 10747027

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