- PDB-4nzt: Crystal structure of the antibody-binding region of Protein M (Pr... -
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データベース: PDB / ID: 4nzt
タイトル
Crystal structure of the antibody-binding region of Protein M (Protein M TD) in complex with anti-infleunza hemagglutinin antibody CR9114 Fab
要素
CR9114 heavy chain
CR9114 light chain
Protein M TD
キーワード
PROTEIN BINDING/IMMUNE SYSTEM / Leucine-rich repeat / broad antibody-binding / block antibody-antigen union / variable region / PROTEIN BINDING-IMMUNE SYSTEM complex
ジャーナル: Science / 年: 2014 タイトル: A structurally distinct human mycoplasma protein that generically blocks antigen-antibody union. 著者: Rajesh K Grover / Xueyong Zhu / Travis Nieusma / Teresa Jones / Isabel Boreo / Amanda S MacLeod / Adam Mark / Sherry Niessen / Helen J Kim / Leopold Kong / Nacyra Assad-Garcia / Keehwan Kwon ...著者: Rajesh K Grover / Xueyong Zhu / Travis Nieusma / Teresa Jones / Isabel Boreo / Amanda S MacLeod / Adam Mark / Sherry Niessen / Helen J Kim / Leopold Kong / Nacyra Assad-Garcia / Keehwan Kwon / Marta Chesi / Vaughn V Smider / Daniel R Salomon / Diane F Jelinek / Robert A Kyle / Richard B Pyles / John I Glass / Andrew B Ward / Ian A Wilson / Richard A Lerner / 要旨: We report the discovery of a broadly reactive antibody-binding protein (Protein M) from human mycoplasma. The crystal structure of the ectodomain of transmembrane Protein M differs from other known ...We report the discovery of a broadly reactive antibody-binding protein (Protein M) from human mycoplasma. The crystal structure of the ectodomain of transmembrane Protein M differs from other known protein structures, as does its mechanism of antibody binding. Protein M binds with high affinity to all types of human and nonhuman immunoglobulin G, predominantly through attachment to the conserved portions of the variable region of the κ and λ light chains. Protein M blocks antibody-antigen union, likely because of its large C-terminal domain extending over the antibody-combining site, blocking entry to large antigens. Similar to the other immunoglobulin-binding proteins such as Protein A, Protein M as well as its orthologs in other Mycoplasma species could become invaluable reagents in the antibody field.
モノクロメーター: Side scattering bent cube-root I-beam single crystal, asymmetric cut 4.965 degrees プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray
放射波長
波長: 0.97945 Å / 相対比: 1
反射
解像度: 2.497→50 Å / Num. obs: 27816 / % possible obs: 98 % / Observed criterion σ(I): -3 / 冗長度: 5 % / Rsym value: 0.13 / Net I/σ(I): 15.3
反射 シェル
解像度: 2.497→2.54 Å / 冗長度: 2.8 % / Mean I/σ(I) obs: 1.5 / Rsym value: 0.44 / % possible all: 84.5