7KCC
Crystal structure of human methionine adenosyltransferase 2A (MAT2A) in complex with SAM and allosteric inhibitor AG-270
Summary for 7KCC
| Entry DOI | 10.2210/pdb7kcc/pdb |
| Related | 7KCE 7KCF 7KDA 7KDB |
| Descriptor | S-adenosylmethionine synthase isoform type-2, CHLORIDE ION, 1,2-ETHANEDIOL, ... (6 entities in total) |
| Functional Keywords | methionine adenosyltransferase, sam, allosteric inhibitor, transferase, transferase-inhibitor complex, transferase/inhibitor |
| Biological source | Homo sapiens (Human) |
| Total number of polymer chains | 1 |
| Total formula weight | 45014.89 |
| Authors | Padyana, A.,Jin, L. (deposition date: 2020-10-05, release date: 2021-04-21, Last modification date: 2023-10-18) |
| Primary citation | Konteatis, Z.,Travins, J.,Gross, S.,Marjon, K.,Barnett, A.,Mandley, E.,Nicolay, B.,Nagaraja, R.,Chen, Y.,Sun, Y.,Liu, Z.,Yu, J.,Ye, Z.,Jiang, F.,Wei, W.,Fang, C.,Gao, Y.,Kalev, P.,Hyer, M.L.,DeLaBarre, B.,Jin, L.,Padyana, A.K.,Dang, L.,Murtie, J.,Biller, S.A.,Sui, Z.,Marks, K.M. Discovery of AG-270, a First-in-Class Oral MAT2A Inhibitor for the Treatment of Tumors with Homozygous MTAP Deletion. J.Med.Chem., 64:4430-4449, 2021 Cited by PubMed Abstract: The metabolic enzyme methionine adenosyltransferase 2A (MAT2A) was recently implicated as a synthetic lethal target in cancers with deletion of the methylthioadenosine phosphorylase () gene, which is adjacent to the tumor suppressor and codeleted with in approximately 15% of all cancers. Previous attempts to target MAT2A with small-molecule inhibitors identified cellular adaptations that blunted their efficacy. Here, we report the discovery of highly potent, selective, orally bioavailable MAT2A inhibitors that overcome these challenges. Fragment screening followed by iterative structure-guided design enabled >10 000-fold improvement in potency of a family of allosteric MAT2A inhibitors that are substrate noncompetitive and inhibit release of the product, -adenosyl methionine (SAM), from the enzyme's active site. We demonstrate that potent MAT2A inhibitors substantially reduce SAM levels in cancer cells and selectively block proliferation of -null cells both in tissue culture and xenograft tumors. These data supported progressing into current clinical studies (ClinicalTrials.gov NCT03435250). PubMed: 33829783DOI: 10.1021/acs.jmedchem.0c01895 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.32 Å) |
Structure validation
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