Type III secretion system, PrgH/EprH / Type III secretion system lipoprotein HrcJ/YscJ / Type III secretion system, PrgH/EprH-like / Type III secretion system protein PrgH-EprH (PrgH) / Lipoprotein YscJ/Flagellar M-ring protein / Secretory protein of YscJ/FliF family / Flagellar M-ring , N-terminal / AMP-binding enzyme, C-terminal domain superfamily / Prokaryotic membrane lipoprotein lipid attachment site profile. 類似検索 - ドメイン・相同性
ジャーナル: Science / 年: 2011 タイトル: Three-dimensional model of Salmonella's needle complex at subnanometer resolution. 著者: Oliver Schraidt / Thomas C Marlovits / 要旨: Type III secretion systems (T3SSs) are essential virulence factors used by many Gram-negative bacteria to inject proteins that make eukaryotic host cells accessible to invasion. The T3SS core ...Type III secretion systems (T3SSs) are essential virulence factors used by many Gram-negative bacteria to inject proteins that make eukaryotic host cells accessible to invasion. The T3SS core structure, the needle complex (NC), is a ~3.5 megadalton-sized, oligomeric, membrane-embedded complex. Analyzing cryo-electron microscopy images of top views of NCs or NC substructures from Salmonella typhimurium revealed a 24-fold symmetry for the inner rings and a 15-fold symmetry for the outer rings, giving an overall C3 symmetry. Local refinement and averaging showed the organization of the central core and allowed us to reconstruct a subnanometer composite structure of the NC, which together with confident docking of atomic structures reveal insights into its overall organization and structural requirements during assembly.
全体 : Needle complex of the type III secretion system from Salmonella t...
全体
名称: Needle complex of the type III secretion system from Salmonella typhimurium - periplasmic domain of the inner membrane associated ring IR1
要素
試料: Needle complex of the type III secretion system from Salmonella typhimurium - periplasmic domain of the inner membrane associated ring IR1
タンパク質・ペプチド: Protein PrgH
タンパク質・ペプチド: Protein PrgK
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超分子 #1000: Needle complex of the type III secretion system from Salmonella t...
超分子
名称: Needle complex of the type III secretion system from Salmonella typhimurium - periplasmic domain of the inner membrane associated ring IR1 タイプ: sample / ID: 1000 / 集合状態: 1 / Number unique components: 2
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分子 #1: Protein PrgH
分子
名称: Protein PrgH / タイプ: protein_or_peptide / ID: 1 / Name.synonym: Protein PrgH / 集合状態: 24mer / 組換発現: No
Protocol: Rigid Body. Based on the homolog EscJ (PDB entry above) a model was built for PrgK (Swissmodel) which was subsequently used for the fitting experiment (rigid body, Chimera), each chain was fitted separately
精密化
空間: REAL / プロトコル: RIGID BODY FIT / 当てはまり具合の基準: Correlation
得られたモデル
PDB-2y9j: THREE-DIMENSIONAL MODEL OF SALMONELLA'S NEEDLE COMPLEX AT SUBNANOMETER RESOLUTION