7UOI

Crystallographic structure of DapE from Enterococcus faecium

7UOI の概要

• エントリーDOI: 10.2210/pdb7uoi/pdb
• 関連するPDBエントリー: 5VO3 7T1Q
• 分子名称: succinyl-diaminopimelate desuccinylase, ZINC ION, GLYCEROL, ... (4 entities in total)
• 機能のキーワード: dape, desuccinylase, metalloenzymes, hydrolase
• 由来する生物種: Enterococcus faecium 1,231,410
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 44230.99

構造登録者

Gonzalez-Segura, L.,Diaz-Vilchis, A.,Terrazas-Lopez, M.,Diaz-Sanchez, A.G. (登録日: 2022-04-12, 公開日: 2023-04-12, 最終更新日: 2024-06-12)

主引用文献

Terrazas-Lopez, M.,Gonzalez-Segura, L.,Diaz-Vilchis, A.,Aguirre-Mendez, K.A.,Lobo-Galo, N.,Martinez-Martinez, A.,Diaz-Sanchez, A.G.
The three-dimensional structure of DapE from Enterococcus faecium reveals new insights into DapE/ArgE subfamily ligand specificity.
Int.J.Biol.Macromol., 270:132281-132281, 2024

PubMed Abstract: DapE is a Zn-metallohydrolase recognized as a drug target for bacterial control. It is a homodimer that requires the exchange of interface strands by an induced fit essential for catalysis. Identifying novel anti-DapE agents requires greater structural details. Most of the characterized DapEs are from the Gram-negative group. Here, two high-resolution DapE crystal structures from Enterococcus faecium are presented for the first time with novel aspects. A loosened enzyme intermediate between the open and closed conformations is observed. Substrates may bind to loose state, subsequently it closes, where hydrolysis occurs, and finally, the change to the open state leads to the release of the products. Mutation of His352 suggests a role, along with His194, in the oxyanion stabilization in the mono-metalated Zn isoform, while in the di-metalated isoform, the metal center 2 complements it function. An aromatic-π box potentially involved in the interaction of DapE with other proteins, and a peptide flip could determine the specificity in the Gram-positive ArgE/DapE group. Finally, details of two extra-catalytic cavities whose geometry changes depending on the conformational state of the enzyme are presented. These cavities could be a target for developing non-competitive agents that trap the enzyme in an inactive state.

PubMed: 38740150
DOI: 10.1016/j.ijbiomac.2024.132281

実験手法

X-RAY DIFFRACTION (1.6 Å)