[NMR paper] Monitoring Binding of HIV-1 Capsid Assembly Inhibitors Using (19) F Ligand-and (15) N Protein-Based NMR and X-ray Crystallography: Early Hit Validation of a Benzodiazepine Series.
Monitoring Binding of HIV-1 Capsid Assembly Inhibitors Using (19) F Ligand-and (15) N Protein-Based NMR and X-ray Crystallography: Early Hit Validation of a Benzodiazepine Series.
Related ArticlesMonitoring Binding of HIV-1 Capsid Assembly Inhibitors Using (19) F Ligand-and (15) N Protein-Based NMR and X-ray Crystallography: Early Hit Validation of a Benzodiazepine Series.
ChemMedChem. 2013 Feb 10;
Authors: Goudreau N, Coulombe R, Faucher AM, Grand-Maître C, Lacoste JE, Lemke CT, Malenfant E, Bousquet Y, Fader L, Simoneau B, Mercier JF, Titolo S, Mason SW
Abstract
The emergence of resistance to existing classes of antiretroviral drugs underlines the need to find novel human immunodeficiency virus (HIV)-1 targets for drug discovery. The viral capsid protein (CA) represents one such potential target. Recently, a series of benzodiazepine inhibitors was identified via high-throughput screening using an in vitro capsid assembly assay (CAA). Here, we demonstrate how a combination of NMR and X-ray co-crystallography allowed for the rapid characterization of the early hits from this inhibitor series. Ligand-based (19) F NMR was used to confirm inhibitor binding specificity and reversibility as well as to identify the N-terminal domain of the capsid (CA(NTD) ) as its molecular target. Protein-based NMR ((1) H and (15) N chemical shift perturbation analysis) identified key residues within the CA(NTD) involved in inhibitor binding, while X-ray co-crystallography confirmed the inhibitor binding site and its binding mode. Based on these results, two conformationally restricted cyclic inhibitors were designed to further validate the possible binding modes. These studies were crucial to early hit confirmation and subsequent lead optimization.
PMID: 23401268 [PubMed - as supplied by publisher]
Combination of NMR spectroscopy and X-ray crystallography offers unique advantages for elucidation of the structural basis of protein complex assembly.
Combination of NMR spectroscopy and X-ray crystallography offers unique advantages for elucidation of the structural basis of protein complex assembly.
Combination of NMR spectroscopy and X-ray crystallography offers unique advantages for elucidation of the structural basis of protein complex assembly.
Sci China Life Sci. 2011 Feb;54(2):101-11
Authors: Feng W, Pan L, Zhang M
NMR spectroscopy and X-ray crystallography are two premium methods for determining the atomic structures of macro-biomolecular complexes. Each method has unique strengths and...
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02-15-2011 07:17 PM
An NMR-Based Structural Rationale for Contrasting Stoichiometry and Ligand Binding Site(s) in Fatty Acid-binding Proteins.
An NMR-Based Structural Rationale for Contrasting Stoichiometry and Ligand Binding Site(s) in Fatty Acid-binding Proteins.
An NMR-Based Structural Rationale for Contrasting Stoichiometry and Ligand Binding Site(s) in Fatty Acid-binding Proteins.
Biochemistry. 2011 Jan 12;
Authors: He Y, Estephan R, Yang X, Vela A, Wang H, Bernard C, Stark RE
Liver fatty acid-binding protein (LFABP) is a 14-kDa cytosolic polypeptide, differing from other family members in number of ligand binding sites, diversity of bound ligands, and transfer of fatty acid(s) to...
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01-14-2011 12:05 PM
[NMR paper] Strategies for the NMR-based identification and optimization of allosteric protein kinase inhibitors.
Strategies for the NMR-based identification and optimization of allosteric protein kinase inhibitors.
Related Articles Strategies for the NMR-based identification and optimization of allosteric protein kinase inhibitors.
Chembiochem. 2005 Sep;6(9):1607-10
Authors: Jahnke W, Blommers MJ, Fernández C, Zwingelstein C, Amstutz R
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[NMR paper] Validation of the binding site structure of the cellular retinol-binding protein (CRB
Validation of the binding site structure of the cellular retinol-binding protein (CRBP) by ligand NMR chemical shift perturbations.
Related Articles Validation of the binding site structure of the cellular retinol-binding protein (CRBP) by ligand NMR chemical shift perturbations.
J Am Chem Soc. 2005 Apr 20;127(15):5310-1
Authors: Wang B, Merz KM
We have calculated proton chemical shift perturbations (CSPs) of retinol in the cellular retinol-binding protein (CRBP) through the use of a recently developed computational approach (Wang et al. J....
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11-25-2010 08:21 PM
[NMR paper] Low 13C-background for NMR-based studies of ligand binding using 13C-depleted glucose
Low 13C-background for NMR-based studies of ligand binding using 13C-depleted glucose as carbon source for microbial growth: 13C-labeled glucose and 13C-forskolin binding to the galactose-H+ symport protein GalP in Escherichia coli.
Related Articles Low 13C-background for NMR-based studies of ligand binding using 13C-depleted glucose as carbon source for microbial growth: 13C-labeled glucose and 13C-forskolin binding to the galactose-H+ symport protein GalP in Escherichia coli.
J Am Chem Soc. 2004 Jan 14;126(1):86-7
Authors: Patching SG, Herbert RB,...
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11-24-2010 09:25 PM
NMR in a crystallography-based high-throughput protein structure-determination enviro
NMR in a crystallography-based high-throughput protein structure-determination environment.
Related Articles NMR in a crystallography-based high-throughput protein structure-determination environment.
Acta Crystallogr Sect F Struct Biol Cryst Commun. 2010 Oct 1;66(Pt 10):1365-6
Authors: Wüthrich K
An introduction is provided to three papers which compare corresponding protein crystal and NMR solution structures determined by the Joint Center for Structural Genomics (JCSG). Special mention is made of the JCSG strategy for combined use of the two...
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10-16-2010 03:56 PM
[NMR paper] NMR-based discovery of lead inhibitors that block DNA binding of the human papillomav
NMR-based discovery of lead inhibitors that block DNA binding of the human papillomavirus E2 protein.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-acspubs.jpg Related Articles NMR-based discovery of lead inhibitors that block DNA binding of the human papillomavirus E2 protein.
J Med Chem. 1997 Sep 26;40(20):3144-50
Authors: Hajduk PJ, Dinges J, Miknis GF, Merlock M, Middleton T, Kempf DJ, Egan DA, Walter KA, Robins TS, Shuker SB, Holzman TF, Fesik SW
The E2 protein is required for the replication of human...