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2N2E

NMR solution structure of the C-terminal domain of NisI, a lipoprotein from Lactococcus lactis which confers immunity against nisin

2N2E の概要
エントリーDOI10.2210/pdb2n2e/pdb
NMR情報BMRB: 25194
分子名称Nisin immunity protein (1 entity in total)
機能のキーワードlantibiotic self-immunity protein, antibiotic, lantibiotic-binding protein
由来する生物種Lactococcus lactis subsp. lactis (firmicutes)
細胞内の位置Cell membrane ; Lipid-anchor : P42708
タンパク質・核酸の鎖数1
化学式量合計14493.79
構造登録者
Hacker, C.,Christ, N.A.,Korn, S.,Duchardt-Ferner, E.,Hellmich, U.A.,Duesterhus, S.,Koetter, P.,Entian, K.,Woehnert, J. (登録日: 2015-05-08, 公開日: 2015-10-21, 最終更新日: 2024-05-15)
主引用文献Hacker, C.,Christ, N.A.,Duchardt-Ferner, E.,Korn, S.,Gobl, C.,Berninger, L.,Dusterhus, S.,Hellmich, U.A.,Madl, T.,Kotter, P.,Entian, K.D.,Wohnert, J.
The Solution Structure of the Lantibiotic Immunity Protein NisI and Its Interactions with Nisin.
J.Biol.Chem., 290:28869-28886, 2015
Cited by
PubMed Abstract: Many Gram-positive bacteria produce lantibiotics, genetically encoded and posttranslationally modified peptide antibiotics, which inhibit the growth of other Gram-positive bacteria. To protect themselves against their own lantibiotics these bacteria express a variety of immunity proteins including the LanI lipoproteins. The structural and mechanistic basis for LanI-mediated lantibiotic immunity is not yet understood. Lactococcus lactis produces the lantibiotic nisin, which is widely used as a food preservative. Its LanI protein NisI provides immunity against nisin but not against structurally very similar lantibiotics from other species such as subtilin from Bacillus subtilis. To understand the structural basis for LanI-mediated immunity and their specificity we investigated the structure of NisI. We found that NisI is a two-domain protein. Surprisingly, each of the two NisI domains has the same structure as the LanI protein from B. subtilis, SpaI, despite the lack of significant sequence homology. The two NisI domains and SpaI differ strongly in their surface properties and function. Additionally, SpaI-mediated lantibiotic immunity depends on the presence of a basic unstructured N-terminal region that tethers SpaI to the membrane. Such a region is absent from NisI. Instead, the N-terminal domain of NisI interacts with membranes but not with nisin. In contrast, the C-terminal domain specifically binds nisin and modulates the membrane affinity of the N-terminal domain. Thus, our results reveal an unexpected structural relationship between NisI and SpaI and shed light on the structural basis for LanI mediated lantibiotic immunity.
PubMed: 26459561
DOI: 10.1074/jbc.M115.679969
主引用文献が同じPDBエントリー
実験手法
SOLUTION NMR
構造検証レポート
Validation report summary of 2n2e
検証レポート(詳細版)ダウンロードをダウンロード

227561

件を2024-11-20に公開中

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