8S79

Lotus japonicus NFR5 intracellular domain in complex with Nanobody 200

Summary for 8S79

• Entry DOI: 10.2210/pdb8s79/pdb
• Descriptor: Nod-factor receptor 5, Nanobody 200, DI(HYDROXYETHYL)ETHER, ... (6 entities in total)
• Functional Keywords: receptor kinase, protein kinase, pseudokinase, nanobody, complex, plant protein
• Biological source: Lotus japonicus; More
• Total number of polymer chains: 4
• Total formula weight: 93035.11

Authors

Hansen, S.B.,Gysel, K.,Andersen, K.R. (deposition date: 2024-02-29, release date: 2024-11-06, Last modification date: 2024-11-13)

Primary citation

Hansen, S.B.,Luu, T.B.,Gysel, K.,Lironi, D.,Kronauer, C.,Rubsam, H.,Jensen, I.B.,Tsitsikli, M.,Birkefeldt, T.G.,Trgovcevic, A.,Stougaard, J.,Radutoiu, S.,Andersen, K.R.
A conserved juxtamembrane motif in plant NFR5 receptors is essential for root nodule symbiosis.
Proc.Natl.Acad.Sci.USA, 121:e2405671121-e2405671121, 2024

PubMed Abstract: Establishment of root nodule symbiosis is initiated by the perception of bacterial Nod factor ligands by the plant LysM receptor kinases NFR1 and NFR5. Receptor signaling initiating the symbiotic pathway depends on the kinase activity of NFR1, while the signaling mechanism of the catalytically inactive NFR5 pseudokinase is unknown. Here, we present the crystal structure of the signaling-competent NFR5 intracellular domain, comprising the juxtamembrane region and pseudokinase domain. The juxtamembrane region is structurally well defined and forms two α-helices, αA and αA', which contain an exposed hydrophobic motif. We demonstrate that this "juxtamembrane motif" promotes NFR5-NFR5 and NFR1-NFR5 interactions and is essential for symbiotic signaling. Conservation analysis reveals that the juxtamembrane motif is present throughout NFR5-type receptors and is required for symbiosis signaling from barley RLK10, suggesting a conserved and broader function for this motif in plant-microbe symbioses.

PubMed: 39495923
DOI: 10.1073/pnas.2405671121

Experimental method

X-RAY DIFFRACTION (2.29 Å)