1YVG

Structural analysis of the catalytic domain of tetanus neurotoxin

1YVG の概要

• エントリーDOI: 10.2210/pdb1yvg/pdb
• 分子名称: Tetanus toxin, light chain, ZINC ION (3 entities in total)
• 機能のキーワード: clostridium neurotoxins; tetanus neurotoxin; zinc metalloprotease; dual-wavelength anomalous dispersion (dad), hydrolase
• 由来する生物種: Clostridium tetani
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 53764.94

構造登録者

Rao, K.N.,Kumaran, D.,Binz, T.,Swaminathan, S. (登録日: 2005-02-15, 公開日: 2005-03-22, 最終更新日: 2023-08-23)

主引用文献

Rao, K.N.,Kumaran, D.,Binz, T.,Swaminathan, S.
Structural analysis of the catalytic domain of tetanus neurotoxin.
Toxicon, 45:929-939, 2005

PubMed Abstract: Clostridium neurotoxins, comprising the tetanus neurotoxin and the seven antigenically distinct botulinum neurotoxins (BoNT/A-G), are among the known most potent bacterial protein toxins to humans. Although they have similar function, sequences and three-dimensional structures, the substrate specificity and the selectivity of peptide bond cleavage are different and unique. Tetanus and botulinum type B neurotoxins enzymatically cleave the same substrate, vesicle-associated membrane protein, at the same peptide bond though the optimum length of substrate peptide required for cleavage by them is different. Here, we present the first experimentally determined three-dimensional structure of the catalytic domain of tetanus neurotoxin and analyze its active site. The structure provides insight into the active site of tetanus toxin's proteolytic activity and the importance of the nucleophilic water and the role of the zinc ion. The probable reason for different modes of binding of vesicle-associated membrane protein to botulinum neurotoxin type B and the tetanus toxin is discussed. The structure provides a basis for designing a novel recombinant vaccine or structure-based drugs for tetanus.

PubMed: 15904688
DOI: 10.1016/j.toxicon.2005.02.032

実験手法

X-RAY DIFFRACTION (2.6 Å)