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-Structure paper
| タイトル | Epitope-directed selection of GPCR nanobody ligands with evolvable function. |
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| ジャーナル・号・ページ | Proc Natl Acad Sci U S A, Vol. 122, Issue 11, Page e2423931122, Year 2025 |
| 掲載日 | 2025年3月18日 |
著者 | Meredith A Skiba / Clare Canavan / Genevieve R Nemeth / Jinghan Liu / Ali Kanso / Andrew C Kruse / ![]() |
| PubMed 要旨 | Antibodies have the potential to target G protein-coupled receptors (GPCRs) with high receptor, cellular, and tissue selectivity; however, few antibody ligands for GPCRs exist. Here, we describe a ...Antibodies have the potential to target G protein-coupled receptors (GPCRs) with high receptor, cellular, and tissue selectivity; however, few antibody ligands for GPCRs exist. Here, we describe a generalizable selection method to enrich for GPCR ligands from a synthetic camelid antibody fragment (nanobody) library. Our strategy yielded multiple nanobody ligands for the angiotensin II type I receptor (AT1R), a prototypical GPCR and important drug target. We found that nanobodies readily act as allosteric modulators, encoding selectivity for both the receptor and chemical features of GPCR ligands. We then used structure-guided design to convert two nanobodies from allosteric ligands to competitive AT1R inhibitors through simple mutations. This work demonstrates that nanobodies can encode multiple pharmacological behaviors and have great potential as evolvable scaffolds for the development of next-generation GPCR therapeutics. |
リンク | Proc Natl Acad Sci U S A / PubMed:40067891 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.1 - 3.2 Å |
| 構造データ | EMDB-47831, PDB-9eah: EMDB-47832, PDB-9eai: EMDB-47833, PDB-9eaj: |
| 化合物 | ![]() ChemComp-OLM: ![]() ChemComp-CLR: ![]() ChemComp-LSN: ![]() ChemComp-Y01: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / GPCR / AT1R / nanobody |
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homo sapiens (ヒト)
camelidae (哺乳類)
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