3VPB

ArgX from Sulfolobus tokodaii complexed with LysW/Glu/ADP/Mg/Zn/Sulfate

3VPB の概要

• エントリーDOI: 10.2210/pdb3vpb/pdb
• 関連するPDBエントリー: 3VPC 3VPD
• 分子名称: Putative acetylornithine deacetylase, Alpha-aminoadipate carrier protein lysW, ADENOSINE-5'-DIPHOSPHATE, ... (8 entities in total)
• 機能のキーワード: atp-dependent amine/thiol ligase family, atp-dependent amine/thiol ligase, lysw, enzyme-carrier protein complex, ligase
• 由来する生物種: Sulfolobus tokodaii; 詳細
• タンパク質・核酸の鎖数: 6
• 化学式量合計: 141739.79

構造登録者

Tomita, T.,Ouchi, T.,Kuzuyama, T.,Nishiyama, M. (登録日: 2012-02-29, 公開日: 2013-02-27, 最終更新日: 2024-11-20)

主引用文献

Ouchi, T.,Tomita, T.,Horie, A.,Yoshida, A.,Takahashi, K.,Nishida, H.,Lassak, K.,Taka, H.,Mineki, R.,Fujimura, T.,Kosono, S.,Nishiyama, C.,Masui, R.,Kuramitsu, S.,Albers, S.V.,Kuzuyama, T.,Nishiyama, M.
Lysine and arginine biosyntheses mediated by a common carrier protein in Sulfolobus
Nat.Chem.Biol., 9:277-283, 2013

PubMed Abstract: LysW has been identified as a carrier protein in the lysine biosynthetic pathway that is active through the conversion of α-aminoadipate (AAA) to lysine. In this study, we found that the hyperthermophilic archaeon, Sulfolobus acidocaldarius, not only biosynthesizes lysine through LysW-mediated protection of AAA but also uses LysW to protect the amino group of glutamate in arginine biosynthesis. In this archaeon, after LysW modification, AAA and glutamate are converted to lysine and ornithine, respectively, by a single set of enzymes with dual functions. The crystal structure of ArgX, the enzyme responsible for modification and protection of the amino moiety of glutamate with LysW, was determined in complex with LysW. Structural comparison and enzymatic characterization using Sulfolobus LysX, Sulfolobus ArgX and Thermus LysX identify the amino acid motif responsible for substrate discrimination between AAA and glutamate. Phylogenetic analysis reveals that gene duplication events at different stages of evolution led to ArgX and LysX.

PubMed: 23434852
DOI: 10.1038/nchembio.1200

実験手法

X-RAY DIFFRACTION (1.8 Å)