Perdeuterated yeast phosphoglycerate kinase (2HPGK) was prepared from yeast cells grown in 99.9% 2H2O and an acid hydrolysate from deuterated algal cells. Kinetic and binding studies suggested that perdeuterated enzyme was similar to the isotopically normal PGK. The use of 2HPGK not only eliminated the spectral overlap between the enzyme and substrate nuclear Overhauser effect (NOE) cross-peaks, but also permitted observation of weak transfer NOE cross-peaks between the substrate protons that are greater than 4 A apart. Intensity of NOE cross-peaks was used to determine the interproton distances of enzyme-bound Mg(II)dATP. These distances were then used in model building studies to determine the conformation of Mg(II)dATP. The average conformation of enzyme-bound dATP is anti with O4'/C2' endo ribose pucker and trans, gauche about the C4'-C5' bond. Although many spin diffusion pathways were eliminated by protein deuteration, spin diffusion was still observed between the protons of the substrate at mixing times longer than 25 ms.
Combined X-ray, NMR and kinetic analyses reveal uncommon binding characteristics of the HCV NS3-NS4A protease inhibitor BI 201335.
Combined X-ray, NMR and kinetic analyses reveal uncommon binding characteristics of the HCV NS3-NS4A protease inhibitor BI 201335.
Combined X-ray, NMR and kinetic analyses reveal uncommon binding characteristics of the HCV NS3-NS4A protease inhibitor BI 201335.
J Biol Chem. 2011 Jan 26;
Authors: Lemke CT, Goudreau N, Zhao S, Hucke O, Thibeault D, Llinás-Brunet M, White PW
Hepatitis C virus (HCV) infection, a major cause of liver disease world-wide, is curable but currently approved therapies have suboptimal efficacy. Supplementing these therapies...
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[NMR paper] Real-time NMR kinetic studies provide global and residue-specific information on the
Real-time NMR kinetic studies provide global and residue-specific information on the non-cooperative unfolding of the beta-trefoil protein, interleukin-1beta.
Related Articles Real-time NMR kinetic studies provide global and residue-specific information on the non-cooperative unfolding of the beta-trefoil protein, interleukin-1beta.
J Mol Biol. 2003 May 2;328(3):693-703
Authors: Roy M, Jennings PA
The interleukin-1beta (IL-1beta) structural motif is a beta-trefoil super fold created by six two-stranded beta-hairpins. Turns are thus...
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[NMR paper] Kinetic, Raman, NMR, and site-directed mutagenesis studies of the Pseudomonas sp. str
Kinetic, Raman, NMR, and site-directed mutagenesis studies of the Pseudomonas sp. strain CBS3 4-hydroxybenzoyl-CoA thioesterase active site.
Related Articles Kinetic, Raman, NMR, and site-directed mutagenesis studies of the Pseudomonas sp. strain CBS3 4-hydroxybenzoyl-CoA thioesterase active site.
Biochemistry. 2002 Sep 17;41(37):11152-60
Authors: Zhuang Z, Song F, Zhang W, Taylor K, Archambault A, Dunaway-Mariano D, Dong J, Carey PR
4-Hydroxybenzoyl-coenzyme A (4-HBA-CoA) thioesterase catalyzes the hydrolysis of 4-HBA-CoA to 4-hydroxybenzoate...
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[NMR paper] Kinetic studies of protein folding using NMR spectroscopy.
Kinetic studies of protein folding using NMR spectroscopy.
Related Articles Kinetic studies of protein folding using NMR spectroscopy.
Nat Struct Biol. 1998 Jul;5 Suppl:504-7
Authors: Dobson CM, Hore PJ
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[NMR paper] Binding of 1-methylimidazole to cytochrome c: kinetic analysis and resonance assignme
Binding of 1-methylimidazole to cytochrome c: kinetic analysis and resonance assignments by two-dimensional NMR.
Related Articles Binding of 1-methylimidazole to cytochrome c: kinetic analysis and resonance assignments by two-dimensional NMR.
Biochim Biophys Acta. 1995 Apr 27;1248(2):177-85
Authors: Shao W, Liu G, Tang W
The binding of 1-methylimidazole to the heme iron by displacing Met-80 of cytochrome c has been studied by two-dimensional (2D) exchange spectroscopy. Two components of cytochrome c ligated by 1-methylimidazole (1-MeIm-cyt c)...
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[NMR paper] Complexes of yeast adenylate kinase and nucleotides investigated by 1H NMR.
Complexes of yeast adenylate kinase and nucleotides investigated by 1H NMR.
Related Articles Complexes of yeast adenylate kinase and nucleotides investigated by 1H NMR.
Biochemistry. 1991 Apr 30;30(17):4137-42
Authors: Vetter IR, Konrad M, Rösch P
The role of one of the histidine residues present in many adenylate kinases (H36 in the porcine cytosolic enzyme) is highly disputed. We thus studied the yeast enzyme (AKye) containing this His residue. AKye is highly homologous to the Escherichia coli enzyme (AKec), a protein that is already well...
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[NMR paper] An NMR study of anion binding to yeast phosphoglycerate kinase.
An NMR study of anion binding to yeast phosphoglycerate kinase.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif Related Articles An NMR study of anion binding to yeast phosphoglycerate kinase.
Eur J Biochem. 1990 May 31;190(1):161-9
Authors: Fairbrother WJ, Graham HC, Williams RJ
Anion binding to yeast phosphoglycerate kinase has been investigated using 1H-NMR spectroscopy. The use of anionic paramagnetic probes. 3- and 3-, has enabled the...
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Cell-free protein synthesis of perdeuterated proteins for NMR studies
Cell-free protein synthesis of perdeuterated proteins for NMR studies
Touraj Etezady-Esfarjani, Sebastian Hiller, Cristina Villalba and Kurt Wüthrich
Journal of Biomolecular NMR; 2007; 39(3); pp 229-238
Abstract:
Cell-free protein synthesis protocols for uniformly deuterated proteins typically yield low, non-uniform deuteration levels. This paper introduces an E. coli cell-extract, D-S30, which enables efficient production of proteins with high deuteration levels for all non-labile hydrogen atom positions. Potential applications of the new protocol may include production of proteins...