Protocol to identify the ligand binding site of Mincle using NMR spectroscopy

STAR Protoc. 2024 Jun 21;5(2):102996. doi: 10.1016/j.xpro.2024.102996. Epub 2024 Apr 3.

Abstract

Mincle (macrophage-inducible C-type lectin, CLEC4E) is a C-type lectin immune-stimulatory receptor that can be targeted for inducing potent adjuvant effects. Mincle can recognize trehalose dimycolate and related glycolipids. Here, we present a protocol to identify the ligand binding mode of Mincle. We describe steps for preparing labeled Mincle ectodomain, data acquisition, and analysis of nuclear magnetic resonance experiments using non-detergent sulfobetaine-195. This protocol can be applied to other protein-ligand interactions that have aggregation problems for complex formation. For complete details on the use and execution of this protocol, please refer to Furukawa et al.1.

Keywords: NMR; Protein Biochemistry; Protein expression and purification; SPR; Surface plasmon resonance.

MeSH terms

  • Binding Sites
  • Humans
  • Lectins, C-Type* / chemistry
  • Lectins, C-Type* / metabolism
  • Ligands
  • Magnetic Resonance Spectroscopy / methods
  • Membrane Proteins / chemistry
  • Membrane Proteins / metabolism
  • Nuclear Magnetic Resonance, Biomolecular / methods
  • Protein Binding
  • Receptors, Immunologic / chemistry
  • Receptors, Immunologic / metabolism

Substances

  • Lectins, C-Type
  • Ligands
  • Receptors, Immunologic
  • Membrane Proteins