2LJB

Structure of the influenza AM2-BM2 chimeric channel

2LJB の概要

• エントリーDOI: 10.2210/pdb2ljb/pdb
• 関連するPDBエントリー: 2KIH 2KIX 2KWX 2LJC 2RLF
• NMR情報: BMRB: 17928
• 分子名称: M2 protein, BM2 protein chimera (1 entity in total)
• 機能のキーワード: m2 channel, transport protein
• 由来する生物種: Influenza A virus, Influenza B virus
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 15221.48

構造登録者

Pielak, R.M.,Oxenoid, K.,Chou, J.J. (登録日: 2011-09-10, 公開日: 2011-11-16, 最終更新日: 2024-05-15)

主引用文献

Pielak, R.M.,Oxenoid, K.,Chou, J.J.
Structural investigation of rimantadine inhibition of the AM2-BM2 chimera channel of influenza viruses.
Structure, 19:1655-1663, 2011

PubMed Abstract: The M2 channel of influenza A is a target of the adamantane family antiviral drugs. Two different drug-binding sites have been reported: one inside the pore, and the other is a lipid-facing pocket. A previous study showed that a chimera of M2 variants from influenza A and B that contains only the pore-binding site is sensitive to amantadine inhibition, suggesting that the primary site of inhibition is inside the pore. To obtain atomic details of channel-drug interaction, we determined the structures of the chimeric channel with and without rimantadine. Inside the channel and near the N-terminal end, methyl groups of Val27 and Ala30 from four subunits form a hydrophobic pocket around the adamantane, and the drug amino group appears to be in polar contact with the backbone oxygen of Ala30. The structures also reveal differences between the drug-bound and -unbound states of the channel that can explain drug resistance.

PubMed: 22078564
DOI: 10.1016/j.str.2011.09.003

実験手法

SOLUTION NMR