6R1S
EthR ligand complex
Summary for 6R1S
| Entry DOI | 10.2210/pdb6r1s/pdb |
| Descriptor | HTH-type transcriptional regulator EthR, 2-(3-methylphenyl)-~{N}-[[2-(oxan-4-yl)-7-oxidanyl-pyrazolo[1,5-a]pyrimidin-5-yl]methyl]ethanamide (3 entities in total) |
| Functional Keywords | transcriptional regulator tuberculosis tetr inhibitor, dna binding protein |
| Biological source | Mycobacterium tuberculosis |
| Total number of polymer chains | 1 |
| Total formula weight | 24162.15 |
| Authors | |
| Primary citation | Tatum, N.J.,Duarte, F.,Kamerlin, S.C.L.,Pohl, E. Relative Binding Energies Predict Crystallographic Binding Modes of Ethionamide Booster Lead Compounds. J Phys Chem Lett, 10:2244-2249, 2019 Cited by PubMed Abstract: Transcriptional repressor EthR from Mycobacterium tuberculosis is a valuable target for antibiotic booster drugs. We previously reported a virtual screening campaign to identify EthR inhibitors for development. Two ligand binding orientations were often proposed, though only the top scoring pose was utilized for filtering of the large data set. We obtained biophysically validated hits, some of which yielded complex crystal structures. In some cases, the crystallized binding mode and top scoring mode agree, while for others an alternate ligand binding orientation was found. In this contribution, we combine rigid docking, molecular dynamics simulations, and the linear interaction energy method to calculate binding free energies and derive relative binding energies for a number of EthR inhibitors in both modes. This strategy allowed us to correctly predict the most favorable orientation. Therefore, this widely applicable approach will be suitable to triage multiple binding modes within EthR and other potential drug targets with similar characteristics. PubMed: 30965004DOI: 10.1021/acs.jpclett.9b00741 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.8 Å) |
Structure validation
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