7EI4

Crystal structure of MasL in complex with a novel covalent inhibitor, collimonin C

Summary for 7EI4

• Entry DOI: 10.2210/pdb7ei4/pdb
• Descriptor: Acetyl-CoA C-acyltransferase, (6S,7R,9E)-6,7-bis(oxidanyl)hexadeca-9,15-dien-11,13-diynoic acid (3 entities in total)
• Functional Keywords: acetyl-coa acetyltransferase, transferase-inhibitor complex, transferase/inhibitor
• Biological source: [Empedobacter] haloabium
• Total number of polymer chains: 4
• Total formula weight: 171534.64

Authors

Lin, C.C.,Huang, K.F.,Yang, Y.L. (deposition date: 2021-03-30, release date: 2022-04-06, Last modification date: 2023-11-29)

Primary citation

Lin, C.C.,Hoo, S.Y.,Ma, L.T.,Lin, C.,Huang, K.F.,Ho, Y.N.,Sun, C.H.,Lee, H.J.,Chen, P.Y.,Shu, L.J.,Wang, B.W.,Hsu, W.C.,Ko, T.P.,Yang, Y.L.
Integrated omics approach to unveil antifungal bacterial polyynes as acetyl-CoA acetyltransferase inhibitors.
Commun Biol, 5:454-454, 2022

PubMed Abstract: Bacterial polyynes are highly active natural products with a broad spectrum of antimicrobial activities. However, their detailed mechanism of action remains unclear. By integrating comparative genomics, transcriptomics, functional genetics, and metabolomics analysis, we identified a unique polyyne resistance gene, masL (encoding acetyl-CoA acetyltransferase), in the biosynthesis gene cluster of antifungal polyynes (massilin A 1, massilin B 2, collimonin C 3, and collimonin D 4) of Massilia sp. YMA4. Crystallographic analysis indicated that bacterial polyynes serve as covalent inhibitors of acetyl-CoA acetyltransferase. Moreover, we confirmed that the bacterial polyynes disrupted cell membrane integrity and inhibited the cell viability of Candida albicans by targeting ERG10, the homolog of MasL. Thus, this study demonstrated that acetyl-CoA acetyltransferase is a potential target for developing antifungal agents.

PubMed: 35551233
DOI: 10.1038/s42003-022-03409-6

Experimental method

X-RAY DIFFRACTION (1.66 Å)