7OAP

Nanobody H3 AND C1 bound to RBD

これはPDB形式変換不可エントリーです。

7OAP の概要

• エントリーDOI: 10.2210/pdb7oap/pdb
• 分子名称: C1 nanobody, Spike protein S1, H3 nanobody, ... (7 entities in total)
• 機能のキーワード: rbd, nanobody, high affinity, antiviral protein
• 由来する生物種: Lama glama; 詳細
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 53862.21

構造登録者

Naismith, J.H.,Mikolajek, H. (登録日: 2021-04-19, 公開日: 2021-08-11, 最終更新日: 2024-10-16)

主引用文献

Huo, J.,Mikolajek, H.,Le Bas, A.,Clark, J.J.,Sharma, P.,Kipar, A.,Dormon, J.,Norman, C.,Weckener, M.,Clare, D.K.,Harrison, P.J.,Tree, J.A.,Buttigieg, K.R.,Salguero, F.J.,Watson, R.,Knott, D.,Carnell, O.,Ngabo, D.,Elmore, M.J.,Fotheringham, S.,Harding, A.,Moynie, L.,Ward, P.N.,Dumoux, M.,Prince, T.,Hall, Y.,Hiscox, J.A.,Owen, A.,James, W.,Carroll, M.W.,Stewart, J.P.,Naismith, J.H.,Owens, R.J.
A potent SARS-CoV-2 neutralising nanobody shows therapeutic efficacy in the Syrian golden hamster model of COVID-19.
Nat Commun, 12:5469-5469, 2021

PubMed Abstract: SARS-CoV-2 remains a global threat to human health particularly as escape mutants emerge. There is an unmet need for effective treatments against COVID-19 for which neutralizing single domain antibodies (nanobodies) have significant potential. Their small size and stability mean that nanobodies are compatible with respiratory administration. We report four nanobodies (C5, H3, C1, F2) engineered as homotrimers with pmolar affinity for the receptor binding domain (RBD) of the SARS-CoV-2 spike protein. Crystal structures show C5 and H3 overlap the ACE2 epitope, whilst C1 and F2 bind to a different epitope. Cryo Electron Microscopy shows C5 binding results in an all down arrangement of the Spike protein. C1, H3 and C5 all neutralize the Victoria strain, and the highly transmissible Alpha (B.1.1.7 first identified in Kent, UK) strain and C1 also neutralizes the Beta (B.1.35, first identified in South Africa). Administration of C5-trimer via the respiratory route showed potent therapeutic efficacy in the Syrian hamster model of COVID-19 and separately, effective prophylaxis. The molecule was similarly potent by intraperitoneal injection.

PubMed: 34552091
DOI: 10.1038/s41467-021-25480-z

実験手法

X-RAY DIFFRACTION (1.901 Å)