7TCL

Crystal structure of P.IsnB complexed with tyrosine isonitrile

7TCL の概要

• エントリーDOI: 10.2210/pdb7tcl/pdb
• 分子名称: TauD/TfdA family dioxygenase, MANGANESE (II) ION, SULFATE ION, ... (5 entities in total)
• 機能のキーワード: taud/tfda family dioxygenase, vinyl isonitrile biosynthesis, oxidoreductase
• 由来する生物種: Photorhabdus
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 33573.33

構造登録者

Kim, W.,Zhang, Y. (登録日: 2021-12-26, 公開日: 2022-08-31, 最終更新日: 2023-10-18)

主引用文献

Kim, W.,Chen, T.Y.,Cha, L.,Zhou, G.,Xing, K.,Canty, N.K.,Zhang, Y.,Chang, W.C.
Elucidation of divergent desaturation pathways in the formation of vinyl isonitrile and isocyanoacrylate.
Nat Commun, 13:5343-5343, 2022

PubMed Abstract: Two different types of desaturations are employed by iron- and 2-oxoglutarate-dependent (Fe/2OG) enzymes to construct vinyl isonitrile and isocyanoacrylate moieties found in isonitrile-containing natural products. A substrate-bound protein structure reveals a plausible strategy to affect desaturation and hints at substrate promiscuity of these enzymes. Analogs are synthesized and used as mechanistic probes to validate structural observations. Instead of proceeding through hydroxylated intermediate as previously proposed, a plausible carbocation species is utilized to trigger C=C bond installation. These Fe/2OG enzymes can also accommodate analogs with opposite chirality and different functional groups including isonitrile-(D)-tyrosine, N-formyl tyrosine, and phloretic acid, while maintaining the reaction selectivity.

PubMed: 36097268
DOI: 10.1038/s41467-022-32870-4

実験手法

X-RAY DIFFRACTION (1.97 Å)