4GW4

Crystal structure of 3BNC60 Fab with P61A mutation

4GW4 の概要

• エントリーDOI: 10.2210/pdb4gw4/pdb
• 分子名称: 3BNC60 Fab Light-chain, 3BNC60 Fab Heavy-chain, 2-acetamido-2-deoxy-beta-D-glucopyranose, ... (4 entities in total)
• 機能のキーワード: fwr, igg, anti hiv, gp120, hiv, immune system
• 由来する生物種: Homo sapiens (human); 詳細
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 96325.27

構造登録者

Diskin, R.,Fu, B.Z.,Bjorkman, P.J. (登録日: 2012-08-31, 公開日: 2013-04-17, 最終更新日: 2024-11-20)

主引用文献

Klein, F.,Diskin, R.,Scheid, J.F.,Gaebler, C.,Mouquet, H.,Georgiev, I.S.,Pancera, M.,Zhou, T.,Incesu, R.B.,Fu, B.Z.,Gnanapragasam, P.N.,Oliveira, T.Y.,Seaman, M.S.,Kwong, P.D.,Bjorkman, P.J.,Nussenzweig, M.C.
Somatic Mutations of the Immunoglobulin Framework Are Generally Required for Broad and Potent HIV-1 Neutralization.
Cell(Cambridge,Mass.), 153:126-138, 2013

PubMed Abstract: Broadly neutralizing antibodies (bNAbs) to HIV-1 can prevent infection and are therefore of great importance for HIV-1 vaccine design. Notably, bNAbs are highly somatically mutated and generated by a fraction of HIV-1-infected individuals several years after infection. Antibodies typically accumulate mutations in the complementarity determining region (CDR) loops, which usually contact the antigen. The CDR loops are scaffolded by canonical framework regions (FWRs) that are both resistant to and less tolerant of mutations. Here, we report that in contrast to most antibodies, including those with limited HIV-1 neutralizing activity, most bNAbs require somatic mutations in their FWRs. Structural and functional analyses reveal that somatic mutations in FWR residues enhance breadth and potency by providing increased flexibility and/or direct antigen contact. Thus, in bNAbs, FWRs play an essential role beyond scaffolding the CDR loops and their unusual contribution to potency and breadth should be considered in HIV-1 vaccine design.

PubMed: 23540694
DOI: 10.1016/j.cell.2013.03.018

実験手法

X-RAY DIFFRACTION (2.65 Å)