8CEW

Crystal structure of human DNA cross-link repair 1A in complex with N-hydroxyimide inhibitor H1

8CEW の概要

• エントリーDOI: 10.2210/pdb8cew/pdb
• 分子名称: DNA cross-link repair 1A protein, DIMETHYL SULFOXIDE, NICKEL (II) ION, ... (6 entities in total)
• 機能のキーワード: snm1a, nuclease inhibition, icl, hydrolase
• 由来する生物種: Homo sapiens (human)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 39829.00

構造登録者

Newman, J.A.,Yosaatmadja, Y.,Baddock, H.T.,Bielinski, M.,von Delft, F.,Bountra, C.,McHugh, P.J.,Schofield, C.J.,Gileadi, O. (登録日: 2023-02-02, 公開日: 2024-02-21, 最終更新日: 2024-09-11)

主引用文献

Bielinski, M.,Henderson, L.R.,Yosaatmadja, Y.,Swift, L.P.,Baddock, H.T.,Bowen, M.J.,Brem, J.,Jones, P.S.,McElroy, S.P.,Morrison, A.,Speake, M.,van Boeckel, S.,van Doornmalen, E.,van Groningen, J.,van den Hurk, H.,Gileadi, O.,Newman, J.A.,McHugh, P.J.,Schofield, C.J.
Cell-active small molecule inhibitors validate the SNM1A DNA repair nuclease as a cancer target.
Chem Sci, 15:8227-8241, 2024

PubMed Abstract: The three human SNM1 metallo-β-lactamase fold nucleases (SNM1A-C) play key roles in DNA damage repair and in maintaining telomere integrity. Genetic studies indicate that they are attractive targets for cancer treatment and to potentiate chemo- and radiation-therapy. A high-throughput screen for SNM1A inhibitors identified diverse pharmacophores, some of which were shown by crystallography to coordinate to the di-metal ion centre at the SNM1A active site. Structure and turnover assay-guided optimization enabled the identification of potent quinazoline-hydroxamic acid containing inhibitors, which bind in a manner where the hydroxamic acid displaces the hydrolytic water and the quinazoline ring occupies a substrate nucleobase binding site. Cellular assays reveal that SNM1A inhibitors cause sensitisation to, and defects in the resolution of, cisplatin-induced DNA damage, validating the tractability of MBL fold nucleases as cancer drug targets.

PubMed: 38817593
DOI: 10.1039/d4sc00367e

実験手法

X-RAY DIFFRACTION (1.53 Å)