ジャーナル: Science / 年: 2013 タイトル: Hepatitis C virus E2 envelope glycoprotein core structure. 著者: Leopold Kong / Erick Giang / Travis Nieusma / Rameshwar U Kadam / Kristin E Cogburn / Yuanzi Hua / Xiaoping Dai / Robyn L Stanfield / Dennis R Burton / Andrew B Ward / Ian A Wilson / Mansun Law / 要旨: Hepatitis C virus (HCV), a Hepacivirus, is a major cause of viral hepatitis, liver cirrhosis, and hepatocellular carcinoma. HCV envelope glycoproteins E1 and E2 mediate fusion and entry into host ...Hepatitis C virus (HCV), a Hepacivirus, is a major cause of viral hepatitis, liver cirrhosis, and hepatocellular carcinoma. HCV envelope glycoproteins E1 and E2 mediate fusion and entry into host cells and are the primary targets of the humoral immune response. The crystal structure of the E2 core bound to broadly neutralizing antibody AR3C at 2.65 angstroms reveals a compact architecture composed of a central immunoglobulin-fold β sandwich flanked by two additional protein layers. The CD81 receptor binding site was identified by electron microscopy and site-directed mutagenesis and overlaps with the AR3C epitope. The x-ray and electron microscopy E2 structures differ markedly from predictions of an extended, three-domain, class II fusion protein fold and therefore provide valuable information for HCV drug and vaccine design.
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モデル: Tecnai Spirit / 画像提供: FEI Company
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Particles were selected using automatic (difference-of-Gaussians) picking followed by reference-free classification to eliminate noisy picks or non-target aggregation states.
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アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 19.0 Å / 解像度の算出法: FSC 0.5 CUT-OFF ソフトウェア - 名称: Appion, Spider, Xmipp, Eman1, Eman2 使用した粒子像数: 32115