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基本情報
登録情報 | データベース: PDB / ID: 8tox | |||||||||||||||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of BG505 Env mutant A517E in complex with antibody ACS202 Fab | |||||||||||||||||||||||||||||||||||||||
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![]() | VIRAL PROTEIN/ANTIVIRAL PROTEIN / IMMUNE SYSTEM / complex / viral antigen / antibody / VIRAL PROTEIN / VIRAL PROTEIN-ANTIVIRAL PROTEIN / IMMUNE SYSTEM complex | |||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / identical protein binding / membrane 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||||||||
生物種 | ![]() ![]() ![]() | |||||||||||||||||||||||||||||||||||||||
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: 2.3 Å | |||||||||||||||||||||||||||||||||||||||
![]() | Wang, S. / Kwong, P.D. | |||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Vaccine-elicited and naturally elicited antibodies differ in their recognition of the HIV-1 fusion peptide. 著者: Mateo Reveiz / Kai Xu / Myungjin Lee / Shuishu Wang / Adam S Olia / Darcy R Harris / Kevin Liu / Tracy Liu / Andrew J Schaub / Tyler Stephens / Yiran Wang / Baoshan Zhang / Rick Huang / ...著者: Mateo Reveiz / Kai Xu / Myungjin Lee / Shuishu Wang / Adam S Olia / Darcy R Harris / Kevin Liu / Tracy Liu / Andrew J Schaub / Tyler Stephens / Yiran Wang / Baoshan Zhang / Rick Huang / Yaroslav Tsybovsky / Peter D Kwong / Reda Rawi / ![]() 要旨: Broadly neutralizing antibodies have been proposed as templates for HIV-1 vaccine design, but it has been unclear how similar vaccine-elicited antibodies are to their naturally elicited templates. To ...Broadly neutralizing antibodies have been proposed as templates for HIV-1 vaccine design, but it has been unclear how similar vaccine-elicited antibodies are to their naturally elicited templates. To provide insight, here we compare the recognition of naturally elicited and vaccine-elicited antibodies targeting the HIV-1 fusion peptide, which comprises envelope (Env) residues 512-526, with the most common sequence being AVGIGAVFLGFLGAA. Naturally elicited antibodies bound peptides with substitutions to negatively charged amino acids at residue positions 517-520 substantially better than the most common sequence, despite these substitutions rarely appearing in HIV-1; by contrast, vaccine-elicited antibodies were less tolerant of sequence variation, with no substitution of residues 512-516 showing increased binding. Molecular dynamics analysis and cryo-EM structural analysis of the naturally elicited ACS202 antibody in complex with the HIV-1 Env trimer with an alanine 517 to glutamine substitution suggested enhanced binding to result from electrostatic interactions with positively charged antibody residues. Overall, vaccine-elicited antibodies appeared to be more fully optimized to bind the most common fusion peptide sequence, perhaps reflecting the immunization with fusion peptide of the vaccine-elicited antibodies. | |||||||||||||||||||||||||||||||||||||||
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