Related ArticlesHydration water molecules of nucleotide-free RNase T1 studied by NMR spectroscopy in solution.
J Biomol NMR. 1998 Jan;11(1):1-15
Authors: Pfeiffer S, Spitzner N, Löhr F, Rüterjans H
The hydration of uncomplexed RNase T1 was investigated by NMR spectroscopy at pH 5.5 and 313 K. Two-dimensional heteronuclear NOE and ROE difference experiments were employed to determine the spatial proximity and the residence times of water molecules at distinct sites of the protein. Backbone carbonyl oxygens involved in intermolecular hydrogen bonds to water molecules were identified based on 1J(NC) coupling constants. These coupling constants were determined from 2D-H(CA)CO and 15N-HSQC experiments with selective decoupling of the 13C alpha nuclei during the t1 evolution time. Our results support the existence of a chain of water molecules with increased residence times in the interior of the protein which is observed in several crystal structures with different inhibitor molecules and serves as a space filler between the alpha-helix and the central beta-sheet. The analysis of 1J(NC) coupling constants demonstrates that some of the water molecules seen in crystal structures are not involved in hydrogen bonds to backbone carbonyls as suggested by crystal structures. This is especially true for a water molecule, which is probably hydrogen bonded by the protonated carboxylate group of D76 and the hydroxyl group of T93 in solution, and for a water molecule, which was reported to connect four different amino acid residues in the core of the protein by intermolecular hydrogen bonds.
[NMR paper] Detection of dynamic water molecules in a microcrystalline sample of the SH3 domain o
Detection of dynamic water molecules in a microcrystalline sample of the SH3 domain of alpha-spectrin by MAS solid-state NMR.
Related Articles Detection of dynamic water molecules in a microcrystalline sample of the SH3 domain of alpha-spectrin by MAS solid-state NMR.
J Biomol NMR. 2005 Apr;31(4):295-310
Authors: Chevelkov V, Faelber K, Diehl A, Heinemann U, Oschkinat H, Reif B
Water molecules are a major determinant of protein stability and are important for understanding protein-protein interactions. We present two experiments which allow to...
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[NMR paper] A high-resolution NMR study of long-lived water molecules in both oxidation states of
A high-resolution NMR study of long-lived water molecules in both oxidation states of a minimal cytochrome c.
Related Articles A high-resolution NMR study of long-lived water molecules in both oxidation states of a minimal cytochrome c.
Biochemistry. 2003 Apr 1;42(12):3457-63
Authors: Bertini I, Ghosh K, Rosato A, Vasos PR
The interaction of water with oxidized and reduced cytochrome c from the Gram-positive bacterium Bacillus pasteurii (a 71-amino acid long monoheme cytochrome) is investigated through CLEANEX experiments and (15)N-edited...
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[NMR paper] Protein hydration and location of water molecules in oxidized horse heart cytochrome
Protein hydration and location of water molecules in oxidized horse heart cytochrome c by (1)H NMR.
Related Articles Protein hydration and location of water molecules in oxidized horse heart cytochrome c by (1)H NMR.
J Magn Reson. 2000 Nov;147(1):1-8
Authors: Bertini I, Huber JG, Luchinat C, Piccioli M
The hydration properties of the oxidized form of horse heart cytochrome c have been studied by (1)H NMR spectroscopy. Two-dimensional, homonuclear ePHOGSY-NOESY experiments are used to map water-protein interactions. The detected NOEs reveal...
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[NMR paper] Water molecules in DNA recognition I: hydration lifetimes of trp operator DNA in solu
Water molecules in DNA recognition I: hydration lifetimes of trp operator DNA in solution measured by NMR spectroscopy.
Related Articles Water molecules in DNA recognition I: hydration lifetimes of trp operator DNA in solution measured by NMR spectroscopy.
J Mol Biol. 1998 Oct 2;282(4):847-58
Authors: Sunnerhagen M, Denisov VP, Venu K, Bonvin AM, Carey J, Halle B, Otting G
The present NMR study investigates the residence times of the hydration water molecules associated with uncomplexed trp operator DNA in solution by measuring intermolecular...
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[NMR paper] Mapping hydration water molecules in the HIV-1 protease/DMP323 complex in solution by
Mapping hydration water molecules in the HIV-1 protease/DMP323 complex in solution by NMR spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-acspubs.jpg Related Articles Mapping hydration water molecules in the HIV-1 protease/DMP323 complex in solution by NMR spectroscopy.
Biochemistry. 1996 Oct 1;35(39):12694-704
Authors: Wang YX, Freedberg DI, Grzesiek S, Torchia DA, Wingfield PT, Kaufman JD, Stahl SJ, Chang CH, Hodge CN
A tetrahedrally hydrogen-bonded structural water molecule, water 301, is seen in...
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[NMR paper] Probing internal water molecules in proteins using two-dimensional 19F-1H NMR.
Probing internal water molecules in proteins using two-dimensional 19F-1H NMR.
Related Articles Probing internal water molecules in proteins using two-dimensional 19F-1H NMR.
J Biomol NMR. 1995 Jun;5(4):415-9
Authors: Cistola DP, Hall KB
A simple approach for detecting internal water molecules in proteins in solution is described. This approach combines 19F-detected heteronuclear Overhauser and exchange spectroscopy (HOESY) with site-specific 19F substitution. The model system employed was intestinal fatty acid-binding protein complexed with...
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[NMR paper] Protein hydration studied with homonuclear 3D 1H NMR experiments.
Protein hydration studied with homonuclear 3D 1H NMR experiments.
Related Articles Protein hydration studied with homonuclear 3D 1H NMR experiments.
J Biomol NMR. 1991 Jul;1(2):209-15
Authors: Otting G, Liepinsh E, Farmer BT, Wüthrich K
Homonuclear 3D 1H NOESY-TOCSY and 3D 1H ROESY-TOCSY experiments were used to resolve and assign nuclear Overhauser effect (NOE) cross peaks between the water signal and individual polypeptide proton resonances in H2O solutions of the basic pancreatic trypsin inhibitor. Combined with a novel, robust...
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[NMR paper] Characterisation by triple-quantum filtered 17O-NMR of water molecules buried in lyso
Characterisation by triple-quantum filtered 17O-NMR of water molecules buried in lysozyme and trapped in a lysozyme-inhibitor complex.
Related Articles Characterisation by triple-quantum filtered 17O-NMR of water molecules buried in lysozyme and trapped in a lysozyme-inhibitor complex.
Biophys Chem. 1999 Mar 29;77(2-3):111-21
Authors: Baguet E, Hennebert N
Triple-quantum filtering NMR sequences were used to study the multiexponential relaxation behaviour of H2 17O in the presence of hen egg white lysozyme. By this means, the fraction and the...