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A Chemical Probe for the Methyl Transferase PRMT5 with a Novel Binding Mode

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ACS MEDICINAL CHEMISTRY LETTERS
卷 11, 期 11, 页码 2227-2231

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AMER CHEMICAL SOC
DOI: 10.1021/acsmedchemlett.0c00355

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PRMT5; Spirodiamines; Methyltransferase; Chemical Probe; Protein flexibility

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Protein arginine methyltransferase 5 (PRMT5) is an enzyme that can symmetrically dimethylate arginine residues in histones and nonhistone proteins by using S-adenosyl methionine (SAM) as the methyl donating cofactor. We have designed a library of SAM analogues and discovered potent, cell-active, and selective Spiro diamines as inhibitors of the enzymatic function of PRMT5. Crystallographic studies confirmed a very interesting binding mode, involving protein flexibility, where both the cofactor pocket and part of substrate binding site are occupied by these inhibitors.

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