1G6Z:
reference: Solution structure, domain features, and structural implications of mutants of the chromo domain from the fission yeast histone methyltransferase Clr4., Horita DA, Ivanova AV, Altieri AS, Klar AJ, Byrd RA, J Mol Biol 2001 Mar 30;307(3):861-70. PMID: 11273706

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