National Health and Medical Research Council (NHMRC, Australia)
2026635
オーストラリア
National Health and Medical Research Council (NHMRC, Australia)
2016827
オーストラリア
引用
ジャーナル: Nat Commun / 年: 2025 タイトル: MORC2 is a phosphorylation-dependent DNA compaction machine. 著者: Winnie Tan / Jeongveen Park / Hariprasad Venugopal / Jieqiong Lou / Prabavi Shayana Dias / Pedro L Baldoni / Kyoung-Wook Moon / Toby A Dite / Christine R Keenan / Alexandra D Gurzau / ...著者: Winnie Tan / Jeongveen Park / Hariprasad Venugopal / Jieqiong Lou / Prabavi Shayana Dias / Pedro L Baldoni / Kyoung-Wook Moon / Toby A Dite / Christine R Keenan / Alexandra D Gurzau / Joonyoung Lee / Timothy M Johanson / Andrew Leis / Jumana Yousef / Vineet Vaibhav / Laura F Dagley / Ching-Seng Ang / Laura D Corso / Chen Davidovich / Stephin J Vervoort / Gordon K Smyth / Marnie E Blewitt / Rhys S Allan / Elizabeth Hinde / Sheena D'Arcy / Je-Kyung Ryu / Shabih Shakeel / 要旨: The Microrchidia (MORC) family of chromatin-remodelling ATPases is pivotal in forming higher-order chromatin structures that suppress transcription. The exact mechanisms of MORC-induced chromatin ...The Microrchidia (MORC) family of chromatin-remodelling ATPases is pivotal in forming higher-order chromatin structures that suppress transcription. The exact mechanisms of MORC-induced chromatin remodelling have been elusive. Here, we report an in vitro reconstitution of full-length MORC2, the most commonly mutated MORC member, linked to various cancers and neurological disorders. MORC2 possesses multiple DNA-binding sites that undergo structural rearrangement upon DNA binding. MORC2 locks onto the DNA using its C-terminal domain (CTD) and acts as a clamp. A conserved phosphate-interacting motif within the CTD was found to regulate ATP hydrolysis and cooperative DNA binding. Importantly, MORC2 mediates chromatin remodelling via ATP hydrolysis-dependent DNA compaction in vitro, regulated by the phosphorylation state of its CTD. These findings position MORC2 CTD phosphorylation as a critical regulator of chromatin remodelling and a promising therapeutic target.