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Inter-Ligand STD NMR: An Efficient 1D NMR Approach to Probe Relative Orientation of Ligands in a Multi-Subsite Protein Binding Pocket

Pharmaceuticals, ISSN: 1424-8247, Vol: 15, Issue: 8
2022
  • 8
    Citations
  • 0
    Usage
  • 25
    Captures
  • 1
    Mentions
  • 76
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    8
  • Captures
    25
  • Mentions
    1
    • Blog Mentions
      1
      • Blog
        1
  • Social Media
    76
    • Shares, Likes & Comments
      76
      • Facebook
        76

Most Recent Blog

Pharmaceuticals, Vol. 15, Pages 1030: Inter-Ligand STD NMR: An Efficient 1D NMR Approach to Probe Relative Orientation of Ligands in a Multi-Subsite Protein Binding Pocket

Pharmaceuticals, Vol. 15, Pages 1030: Inter-Ligand STD NMR: An Efficient 1D NMR Approach to Probe Relative Orientation of Ligands in a Multi-Subsite Protein Binding Pocket

Article Description

In recent years, Saturation Transfer Difference NMR (STD NMR) has been proven to be a powerful and versatile ligand-based NMR technique to elucidate crucial aspects in the investigation of protein-ligand complexes. Novel STD NMR approaches relying on “multi-frequency” irradiation have enabled us to even elucidate specific ligand-amino acid interactions and explore the binding of fragments in previously unknown binding subsites. Exploring multi-subsite protein binding pockets is especially important in Fragment Based Drug Discovery (FBDD) to design leads of increased specificity and efficacy. We hereby propose a novel multi-frequency STD NMR approach based on direct irradiation of one of the ligands in a multi-ligand binding process, to probe the vicinity and explore the relative orientation of fragments in adjacent binding sub-sites, which we called Inter-Ligand STD NMR (IL-STD NMR). We proved its applicability on (i) a standard protein-ligand system commonly used for ligand-observed NMR benchmarking: Naproxen as bound to Bovine Serum Albumin, and (ii) the biologically relevant system of Cholera Toxin Subunit B and two inhibitors adjacently bound within the GM1 binding site. Relative to Inter-Ligand NOE (ILOE), the current state-of-the-art methodology to probe relative orientations of adjacent ligands, IL-STD NMR requires about one tenth of the experimental time and protein consumption, making it a competitive methodology with the potential to be applied in the pharmaceutical industries.

Bibliographic Details

Monaco, Serena; Ramírez-Cárdenas, Jonathan; Carmona, Ana Teresa; Robina, Inmaculada; Angulo, Jesus

MDPI AG

Biochemistry, Genetics and Molecular Biology; Pharmacology, Toxicology and Pharmaceutics

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