+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7vlx | |||||||||
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タイトル | Cryo-EM structures of Listeria monocytogenes man-PTS | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN (膜タンパク質) / antimicrobial peptides (抗微生物ペプチド) / bacteriocins / pediocin PA-1 / pediocin-like/class IIa bacteriocins / antibiotic resistance (抗微生物薬耐性) / mannose phosphotransferase / man-PTS | |||||||||
機能・相同性 | 機能・相同性情報 phosphoenolpyruvate-dependent sugar phosphotransferase system / membrane => GO:0016020 / 細胞膜 類似検索 - 分子機能 | |||||||||
生物種 | Listeria monocytogenes (リステリア・モノサイトゲネス) | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.12 Å | |||||||||
データ登録者 | Wang, J.W. | |||||||||
資金援助 | 中国, 2件
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引用 | ジャーナル: Appl Environ Microbiol / 年: 2022 タイトル: Structural Basis of Pore Formation in the Mannose Phosphotransferase System by Pediocin PA-1. 著者: Liyan Zhu / Jianwei Zeng / Chang Wang / Jiawei Wang / 要旨: Bacteriocins are ribosomally synthesized bacterial antimicrobial peptides that have a narrow spectrum of antibacterial activity against species closely related to the producers. Pediocin-like (or ...Bacteriocins are ribosomally synthesized bacterial antimicrobial peptides that have a narrow spectrum of antibacterial activity against species closely related to the producers. Pediocin-like (or class IIa) bacteriocins (PLBs) exhibit antibacterial activity against several Gram-positive bacterial strains by forming pores in the cytoplasmic membrane of target cells with a specific receptor, the mannose phosphotransferase system (man-PTS). In this study, we report the cryo-electron microscopy structures of man-PTS from Listeria monocytogenes alone and its complex with pediocin PA-1, the first and most extensively studied representative PLB, at resolutions of 3.12 and 2.45 Å, respectively. The structures revealed that the binding of pediocin PA-1 opens the Core domain of man-PTS away from its Vmotif domain, creating a pore through the cytoplasmic membranes of target cells. During this process, the N-terminal β-sheet region of pediocin PA-1 can specifically attach to the extracellular surface of the man-PTS Core domain, whereas the C-terminal half penetrates the membrane and cracks the man-PTS like a wedge. Thus, our findings shed light on a design of novel PLBs that can kill the target pathogenic bacteria. Listeria monocytogenes is a ubiquitous microorganism responsible for listeriosis, a rare but severe disease in humans, who become infected by ingesting contaminated food products (i.e., dairy, meat, fish, and vegetables): the disease has a fatality rate of 33%. Pediocin PA-1 is an important commercial additive used in food production to inhibit species. The mannose phosphotransferase system (man-PTS) is responsible for the sensitivity of Listeria monocytogenes to pediocin PA-1. In this study, we report the cryo-EM structures of man-PTS from Listeria monocytogenes alone and its complex with pediocin PA-1 at resolutions of 3.12 and 2.45 Å, respectively. Our results facilitate the understanding of the mode of action of class IIa bacteriocins as an alternative to antibiotics. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7vlx.cif.gz | 268.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7vlx.ent.gz | 225.9 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7vlx.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/vl/7vlx ftp://data.pdbj.org/pub/pdb/validation_reports/vl/7vlx | HTTPS FTP |
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-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
#1: タンパク質 | 分子量: 27377.561 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) Listeria monocytogenes (リステリア・モノサイトゲネス) 遺伝子: A7N75_11070, A8L61_14515, A8N58_12480, A9809_10565, AB938_12885, ACY06_13095, AF066_07245, AF314_13905, AFT97_02015, AMC55_01930, APE37_07920, ARJ20_12560, ARS65_09750, ART25_13030, B1821_ ...遺伝子: A7N75_11070, A8L61_14515, A8N58_12480, A9809_10565, AB938_12885, ACY06_13095, AF066_07245, AF314_13905, AFT97_02015, AMC55_01930, APE37_07920, ARJ20_12560, ARS65_09750, ART25_13030, B1821_09270, B1N06_07640, B1N45_09425, B1N52_06240, B1N70_07565, B1O25_12365, B2H17_07955, B4960_11450, B4P04_12550, B4P23_04745, B4X79_07140, B4X80_09510, B4X87_09590, B4X92_08295, B4Y29_05710, B4Y36_09590, B4Y40_06900, B4Y49_08220, B4Y57_09590, B5K59_14490, BBW72_13535, BLH28_04840, C6R69_10580, C7H49_10125, D4920_07280, D9T24_08210, DCT16_05775, DU018_08255, E3W32_13300, E5F58_14000, E5H26_12030, EDX87_01965, EK719_12800, EPI21_11885, EXZ73_03360, F4W64_09720, F6515_08315, FA835_09550, FDP75_01900, FL871_04025, FLQ84_02200, FLQ91_10935, FLQ96_08830, FLR03_08660, FZX01_09955, G3O21_000383, GEH47_13560, GEJ92_13635, GEK33_09035, GER99_09730, GF172_05545, GGA51_12050, GHD27_05540, GIH49_05190, GIQ23_05220, GJA60_00910, GJB11_12355, GJW51_04690, GUM51_00345, GYS09_07230, GYS13_03425, GYS23_07920, GYU49_14700, GYZ23_07710, GYZ34_05285, GZI09_02550, GZI83_01895, GZP37_07990, GZS65_10905, HOY96_00900, HRK24_07015, HXD42_11005, HXF15_12125, KW30_01930, LH97_05170, LmNIHS28_00099, QU69_12075 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: S5LAD9 #2: タンパク質 | 分子量: 33402.164 Da / 分子数: 3 / 由来タイプ: 組換発現 由来: (組換発現) Listeria monocytogenes (リステリア・モノサイトゲネス) 遺伝子: ARV28_12335, B4960_11455, CX098_00810, E3W32_13305, E5H26_12035, EDX87_01970, EK719_12795, EYY39_04480, F4W64_09725, FL871_04030, FZX01_09960, GEK33_09040, GH165_06065, GIH49_05195, HRK24_07020 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: A0A1E8EBU8 #3: 糖 | 研究の焦点であるリガンドがあるか | Y | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: mannose-specific PTS system from Listeria monocytogenes タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Listeria monocytogenes (リステリア・モノサイトゲネス) |
由来(組換発現) | 生物種: Escherichia coli (大腸菌) |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: NITROGEN |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: LAB6 / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELDBright-field microscopy |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.12 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 136729 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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