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-Structure paper
タイトル | Structural insights into Frizzled3 through nanobody modulators. |
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ジャーナル・号・ページ | Nat Commun, Vol. 15, Issue 1, Page 7228, Year 2024 |
掲載日 | 2024年8月22日 |
著者 | James Hillier / Yuguang Zhao / Loic Carrique / Tomas Malinauskas / Reinis R Ruza / Tao-Hsin Chang / Gangshun Yi / Helen M E Duyvesteyn / Jing Yu / Weixian Lu / Els Pardon / Jan Steyaert / Yanan Zhu / Tao Ni / E Yvonne Jones / |
PubMed 要旨 | The Wnt receptor Frizzled3 (FZD3) is important for brain axonal development and cancer progression. We report structures of FZD3 in complex with extracellular and intracellular binding nanobodies (Nb) ...The Wnt receptor Frizzled3 (FZD3) is important for brain axonal development and cancer progression. We report structures of FZD3 in complex with extracellular and intracellular binding nanobodies (Nb). The crystal structure of Nb8 in complex with the FZD3 cysteine-rich domain (CRD) reveals that the nanobody binds at the base of the lipid-binding groove and can compete with Wnt5a. Nb8 fused with the Dickkopf-1 C-terminal domain behaves as a FZD3-specific Wnt surrogate, activating β-catenin signalling. The cryo-EM structure of FZD3 in complex with Nb9 reveals partially resolved density for the CRD, which exhibits positional flexibility, and a transmembrane conformation that resembles active GPCRs. Nb9 binds to the cytoplasmic region of FZD3 at the putative Dishevelled (DVL) or G protein-binding site, competes with DVL binding, and inhibits GαS coupling. In combination, our FZD3 structures with nanobody modulators map extracellular and intracellular interaction surfaces of functional, and potentially therapeutic, relevance. |
リンク | Nat Commun / PubMed:39174501 / PubMed Central |
手法 | EM (単粒子) / X線回折 |
解像度 | 1.76 - 2.9 Å |
構造データ | EMDB-18680, PDB-8qw4: PDB-8q7o: |
化合物 | ChemComp-DMS: ChemComp-GOL: ChemComp-CIT: ChemComp-NAG: ChemComp-SO4: ChemComp-HOH: |
由来 |
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キーワード | SIGNALING PROTEIN / Frizzled / WNT / GPCR / Nanobody / Complex / CELL ADHESION / FZD3 Nanobody |