1. Yeast surface display platform for rapid discovery of conformationally selective nanobodies
- Author
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McMahon, Conor, Baier, Alexander S, Pascolutti, Roberta, Wegrecki, Marcin, Zheng, Sanduo, Ong, Janice X, Erlandson, Sarah C, Hilger, Daniel, Rasmussen, Søren GF, Ring, Aaron M, Manglik, Aashish, and Kruse, Andrew C
- Subjects
Biochemistry and Cell Biology ,Biological Sciences ,Vaccine Related ,Immunization ,Generic health relevance ,Antibody Specificity ,Antigens ,Cell Separation ,Cell Surface Display Techniques ,Flow Cytometry ,Humans ,Protein Conformation ,Receptors ,G-Protein-Coupled ,Single-Domain Antibodies ,Yeasts ,Chemical Sciences ,Medical and Health Sciences ,Biophysics ,Developmental Biology ,Biological sciences ,Biomedical and clinical sciences ,Chemical sciences - Abstract
Camelid single-domain antibody fragments ('nanobodies') provide the remarkable specificity of antibodies within a single 15-kDa immunoglobulin VHH domain. This unique feature has enabled applications ranging from use as biochemical tools to therapeutic agents. Nanobodies have emerged as especially useful tools in protein structural biology, facilitating studies of conformationally dynamic proteins such as G-protein-coupled receptors (GPCRs). Nearly all nanobodies available to date have been obtained by animal immunization, a bottleneck restricting many applications of this technology. To solve this problem, we report a fully in vitro platform for nanobody discovery based on yeast surface display. We provide a blueprint for identifying nanobodies, demonstrate the utility of the library by crystallizing a nanobody with its antigen, and most importantly, we utilize the platform to discover conformationally selective nanobodies to two distinct human GPCRs. To facilitate broad deployment of this platform, the library and associated protocols are freely available for nonprofit research.
- Published
- 2018