6IRO:
reference: Structures of the ISWI-nucleosome complex reveal a conserved mechanism of chromatin remodeling., Yan L, Wu H, Li X, Gao N, Chen Z, Nat Struct Mol Biol. 2019 Mar 13. pii: 10.1038/s41594-019-0199-9. doi:, 10.1038/s41594-019-0199-9. PMID: 30872815

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