Brazilian National Council for Scientific and Technological Development (CNPq)
440379/2016-4
ブラジル
Sao Paulo Research Foundation (FAPESP)
2018/03917-6
ブラジル
引用
ジャーナル: Nat Commun / 年: 2021 タイトル: Cryo-EM structure of the mature and infective Mayaro virus at 4.4 Å resolution reveals features of arthritogenic alphaviruses. 著者: Helder V Ribeiro-Filho / Lais D Coimbra / Alexandre Cassago / Rebeca P F Rocha / João Victor da Silva Guerra / Rafael de Felicio / Carolina Moretto Carnieli / Luiza Leme / Antonio Cláudio ...著者: Helder V Ribeiro-Filho / Lais D Coimbra / Alexandre Cassago / Rebeca P F Rocha / João Victor da Silva Guerra / Rafael de Felicio / Carolina Moretto Carnieli / Luiza Leme / Antonio Cláudio Padilha / Adriana F Paes Leme / Daniela B B Trivella / Rodrigo Villares Portugal / Paulo Sérgio Lopes-de-Oliveira / Rafael Elias Marques / 要旨: Mayaro virus (MAYV) is an emerging arbovirus of the Americas that may cause a debilitating arthritogenic disease. The biology of MAYV is not fully understood and largely inferred from related ...Mayaro virus (MAYV) is an emerging arbovirus of the Americas that may cause a debilitating arthritogenic disease. The biology of MAYV is not fully understood and largely inferred from related arthritogenic alphaviruses. Here, we present the structure of MAYV at 4.4 Å resolution, obtained from a preparation of mature, infective virions. MAYV presents typical alphavirus features and organization. Interactions between viral proteins that lead to particle formation are described together with a hydrophobic pocket formed between E1 and E2 spike proteins and conformational epitopes specific of MAYV. We also describe MAYV glycosylation residues in E1 and E2 that may affect MXRA8 host receptor binding, and a molecular "handshake" between MAYV spikes formed by N262 glycosylation in adjacent E2 proteins. The structure of MAYV is suggestive of structural and functional complexity among alphaviruses, which may be targeted for specificity or antiviral activity.
ソフトウェア - 名称: IMAGIC (ver. 2019) / ソフトウェア - 詳細: Full data set CTF correction 詳細: Per particle CTF correction based on IMAGIC movie spectra of all images simultaneously (Full data set CTF correction).
初期モデル
モデルのタイプ: OTHER / 詳細: Angular Reconstitution random startup
最終 再構成
想定した対称性 - 点群: I (正20面体型対称) / アルゴリズム: EXACT BACK PROJECTION / 解像度のタイプ: BY AUTHOR / 解像度: 4.4 Å / 解像度の算出法: FSC 1/2 BIT CUT-OFF / ソフトウェア - 名称: IMAGIC (ver. 2019) / ソフトウェア - 詳細: with software extensions 詳細: Random assignment of 3D membership to multiple 3D reconstructions during refinements, based on angular reconstitution. 使用した粒子像数: 40179
初期 角度割当
タイプ: ANGULAR RECONSTITUTION / ソフトウェア - 名称: IMAGIC (ver. 2019) 詳細: Angular reconstitution used originally in random startup mode, later in refinement mode using anchor sets
最終 角度割当
タイプ: ANGULAR RECONSTITUTION / ソフトウェア - 名称: IMAGIC (ver. 2019) 詳細: Angular reconstitution in refinement mode using anchor sets and local alignments