- PDB-7b7j: EccD5 ubiqutin like domain from Mycobacterium xenopi -
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基本情報
登録情報
データベース: PDB / ID: 7b7j
タイトル
EccD5 ubiqutin like domain from Mycobacterium xenopi
要素
Secretion protein Snm4
キーワード
MEMBRANE PROTEIN / ubiqutin-like cytosolic ESX secretion
機能・相同性
Type VII secretion system membrane protein EccD / YukD-like / WXG100 protein secretion system (Wss), protein YukD / membrane => GO:0016020 / Secretion protein Snm4
ジャーナル: Sci Adv / 年: 2021 タイトル: Structure of the mycobacterial ESX-5 type VII secretion system pore complex. 著者: Katherine S H Beckham / Christina Ritter / Grzegorz Chojnowski / Daniel S Ziemianowicz / Edukondalu Mullapudi / Mandy Rettel / Mikhail M Savitski / Simon A Mortensen / Jan Kosinski / Matthias Wilmanns / 要旨: The ESX-5 type VII secretion system is a membrane-spanning protein complex key to the virulence of mycobacterial pathogens. However, the overall architecture of the fully assembled translocation ...The ESX-5 type VII secretion system is a membrane-spanning protein complex key to the virulence of mycobacterial pathogens. However, the overall architecture of the fully assembled translocation machinery and the composition of the central secretion pore have remained unknown. Here, we present the high-resolution structure of the 2.1-megadalton ESX-5 core complex. Our structure captured a dynamic, secretion-competent conformation of the pore within a well-defined transmembrane section, sandwiched between two flexible protein layers at the cytosolic entrance and the periplasmic exit. We propose that this flexibility endows the ESX-5 machinery with large conformational plasticity required to accommodate targeted protein secretion. Compared to known secretion systems, a highly dynamic state of the pore may represent a fundamental principle of bacterial secretion machineries.
解像度: 1.66→30.61 Å / Cor.coef. Fo:Fc: 0.972 / Cor.coef. Fo:Fc free: 0.964 / SU B: 5.382 / SU ML: 0.087 / 交差検証法: THROUGHOUT / σ(F): 0 / ESU R: 0.101 / ESU R Free: 0.101 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : WITH TLS ADDED
Rfactor
反射数
%反射
Selection details
Rfree
0.2163
521
5 %
RANDOM
Rwork
0.1812
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-
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obs
0.183
9827
98.93 %
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溶媒の処理
イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1.2 Å / 溶媒モデル: MASK