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An NMR-based scoring function improves the accuracy of binding pose predictions by docking by two orders of magnitude
An NMR-based scoring function improves the accuracy of binding pose predictions by docking by two orders of magnitude
Abstract Low-affinity ligands can be efficiently optimized into high-affinity drug leads by structure based drug design when atomic-resolution structural information on the protein/ligand complexes is available. In this work we show that the use of a few, easily obtainable, experimental restraints improves the accuracy of the docking experiments by two orders of magnitude. The experimental data are measured in nuclear magnetic resonance spectra and consist of...
nmrlearner
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12-17-2011 04:44 AM
‘q-titration’ of long-chain and short-chain lipids differentiates between structured and mobile residues of membrane proteins studied in bicelles by solution NMR spectroscopy
‘q-titration’ of long-chain and short-chain lipids differentiates between structured and mobile residues of membrane proteins studied in bicelles by solution NMR spectroscopy
Publication year: 2011
Source: Journal of Magnetic Resonance, Available online 25 October 2011</br>
Woo Sung*Son, Sang Ho*Park, Henry J.*Nothnagel, George J.*Lu, Yan*Wang, ...</br>
‘q-titration’ refers to the systematic comparison of signal intensities in solution NMR spectra of uniformlyN labeled membrane proteins solubilized in micelles and isotropic bicelles as a function of the molar ratios (q) of the...
nmrlearner
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10-26-2011 11:25 AM
[NMR analysis blog] Alignment of NMR spectra – Part IV: Advanced Alignment
Alignment of NMR spectra – Part IV: Advanced Alignment
Previous posts on this series:
Alignment of NMR spectra – Part I: The problem
Alignment of NMR spectra – Part II: Binning / Bucketing
Alignment of NMR spectra – Part III: Global Alignment
As I mentioned in my previous post, simple alignment based on shifting or referencing the whole spectrum is not enough in cases where there are different local chemical shift fluctuations.
Resorting back to the synthetic data set used in the previous posts, let me introduce a semi-automatic method designed specifically to align spectra having...
nmrlearner
News from NMR blogs
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02-07-2011 07:53 PM
[NMR analysis blog] Alignment of NMR spectra – Part III: Global Alignment
Alignment of NMR spectra – Part III: Global Alignment
Previous posts on this series:
Alignment of NMR spectra – Part I: The problem
Alignment of NMR spectra – Part II: Binning / Bucketing
We have seen that binning helps in minimizing, for example, the effect of pH-induced fluctuations in chemical shift so that, in the field of NMR-based metabonomics studies, ensuring that signals for a given metabolite appear at the same location in all spectra. One evident disadvantage of binning is that it greatly reduces the spectral resolution (e.g. in a 500 MHz instrument, a typical 64 Kb...
nmrlearner
News from NMR blogs
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02-03-2011 06:51 PM
alignment in a magnetic field
hi all,
I have a general question about alignment in a magnetic field.
For me, alignment in alignment media is easier to grasp because of interactions that I am familiar with as a chemist.
But, whats the principle behind molecules that align in a magnetic field?
There are a lot of examples like cyanometmyoglobin (from the Prestegard paper) where paramagnetic susceptibility plays a role. Thats understandable from my side.
But what about for instance short DNA dimers (helices), collagen gels or bacteriophages?
I could not really find a nice (clear to me) explanation, why these...
Hydrazin
NMR Questions and Answers
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09-23-2010 06:13 PM
[NMR paper] Short chain phospholipids in membrane protein crystallization: a 31P-NMR study of col
Short chain phospholipids in membrane protein crystallization: a 31P-NMR study of colloidal properties of dihexanoyl phosphatidylcholine.
Related Articles Short chain phospholipids in membrane protein crystallization: a 31P-NMR study of colloidal properties of dihexanoyl phosphatidylcholine.
Chem Phys Lipids. 1990 Sep;55(3):351-4
Authors: Eisele JL, Neumann JM, Chachaty C
The colloidal features of short chain phospholipids can be deduced from 31P-NMR analysis by comparison with available data on phospholipid aqueous dispersion. In this study...
nmrlearner
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08-21-2010 11:04 PM
[NMR paper] Identification of trapped and boundary lipid binding sites in M13 coat protein/lipid
Identification of trapped and boundary lipid binding sites in M13 coat protein/lipid complexes by deuterium NMR spectroscopy.
Related Articles Identification of trapped and boundary lipid binding sites in M13 coat protein/lipid complexes by deuterium NMR spectroscopy.
Biochemistry. 1990 Apr 24;29(16):3828-34
Authors: Van Gorkom LC, Horváth LI, Hemminga MA, Sternberg B, Watts A
The major coat protein of M13 bacteriophage has been incorporated into bilayers of 1,2-dimyristoyl-sn-glycero-3-phosphocholine, deuterated in the trimethyl segments of...