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-Structure paper
タイトル | Substrate adaptors are flexible tethering modules that enhance substrate methylation by the arginine methyltransferase PRMT5. |
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ジャーナル・号・ページ | J Biol Chem, Vol. 301, Issue 2, Page 108165, Year 2025 |
掲載日 | 2025年1月8日 |
![]() | Cyrus Y Jin / Moritz Hunkeler / Kathleen M Mulvaney / William R Sellers / Eric S Fischer / ![]() |
PubMed 要旨 | Protein arginine methyltransferase (PRMT) 5 is an essential arginine methyltransferase responsible for the majority of cellular symmetric dimethyl-arginine marks. PRMT5 uses substrate adaptors such ...Protein arginine methyltransferase (PRMT) 5 is an essential arginine methyltransferase responsible for the majority of cellular symmetric dimethyl-arginine marks. PRMT5 uses substrate adaptors such as pICln, RIOK1, and COPR5 to recruit and methylate a wide range of substrates. Although the substrate adaptors play important roles in substrate recognition, how they direct PRMT5 activity towards specific substrates remains incompletely understood. Using biochemistry and cryogenic electron microscopy, we show that these adaptors compete for the same binding site on PRMT5. We find that substrate adaptor and substrate complexes are bound to PRMT5 through two peptide motifs, enabling these adaptors to act as flexible tethering modules to enhance substrate methylation. Taken together, our results shed structural and mechanistic light on the PRMT5 substrate adaptor function and the biochemical nature of PRMT5 interactors. |
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手法 | EM (単粒子) |
解像度 | 3.06 - 3.36 Å |
構造データ | EMDB-47476, PDB-9e3a: EMDB-47477, PDB-9e3b: EMDB-47478, PDB-9e3c: |
化合物 | ![]() ChemComp-SFG: |
由来 |
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![]() | TRANSFERASE / PRMT5 / Methyl transferase / WDR77 / arginine |