The AQUA and PROCHECK-NMR programs provide a means of validating the geometry and restraint violations of an ensemble of protein structures solved by solution NMR. The outputs include a detailed breakdown of the restraint violations, a number of plots in PostScript format and summary statistics. These various analyses indicate both the degree of agreement of the model structures with the experimental dat, and the quality of their geometrical properties. They are intended to be of use both to support ongoing NMR structure determination and in the validation of the final results.
[Question from NMRWiki Q&A forum] Beginners question: checking probe and multinulear ability in Bruker machines
Beginners question: checking probe and multinulear ability in Bruker machines
Hi All,
This may be a daft question, but how do I go about identifying the probe in our NMR machine, and hence whether it's capable of measuring (simple 1D) 19F spectra? It is a Bruker Avance 500, and I was under the impression that it might be capable of this with a little fiddling (http://www.chem.uic.edu/nmr/downloads/Avance-19F_Guide.0201.pdf), if I'm lucky wrt to what probe we have.
Thanks
Addition (1724, 260911): I have now confirmed that it is a BBO probe. What else is needed for the linked...
nmrlearner
News from other NMR forums
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09-27-2011 07:04 AM
[NMR paper] High-quality homology models derived from NMR and X-ray structures of E. coli protein
High-quality homology models derived from NMR and X-ray structures of E. coli proteins YgdK and Suf E suggest that all members of the YgdK/Suf E protein family are enhancers of cysteine desulfurases.
Related Articles High-quality homology models derived from NMR and X-ray structures of E. coli proteins YgdK and Suf E suggest that all members of the YgdK/Suf E protein family are enhancers of cysteine desulfurases.
Protein Sci. 2005 Jun;14(6):1597-608
Authors: Liu G, Li Z, Chiang Y, Acton T, Montelione GT, Murray D, Szyperski T
The structural...
nmrlearner
Journal club
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11-25-2010 08:21 PM
[NMR paper] Improving the quality of protein structures derived by NMR spectroscopy.
Improving the quality of protein structures derived by NMR spectroscopy.
Related Articles Improving the quality of protein structures derived by NMR spectroscopy.
J Biomol NMR. 2002 Mar;22(3):281-9
Authors: Spronk CA, Linge JP, Hilbers CW, Vuister GW
Biomolecular structures provide the basis for many studies in several research areas such as homology modelling, structure-based drug design and functional genomics. It is an important prerequisite that the structure is reliable in terms of accurate description of the experimental data, and in...
nmrlearner
Journal club
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11-24-2010 08:49 PM
[Louic Vermeer blog] Compiling Aria2, CNS, procheck and aqua for NMR structure calculation
Compiling Aria2, CNS, procheck and aqua for NMR structure calculation
A quick guide to compiling ARIA 2.2, CNS 1.21, AQUA 3.2 and PROCHECK, under Ubuntu Karmic 9.10 (32-bit) If you use Gentoo linux, you can find aria under sci-chemistry (masked by ~x86). Procheck is in the science overlay (see the layman and overlays documentation). Aqua has to be installed manually at the time of writing this
Read complete story on Louic Vermeer blog
nmrlearner
News from NMR blogs
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10-18-2010 09:17 AM
[NMR paper] Improving the quality of NMR and crystallographic protein structures by means of a co
Improving the quality of NMR and crystallographic protein structures by means of a conformational database potential derived from structure databases.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Improving the quality of NMR and crystallographic protein structures by means of a conformational database potential derived from structure databases.
...
nmrlearner
Journal club
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08-22-2010 02:27 PM
[NMR paper] Application of 1H NMR chemical shifts to measure the quality of protein structures.
Application of 1H NMR chemical shifts to measure the quality of protein structures.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Application of 1H NMR chemical shifts to measure the quality of protein structures.
J Mol Biol. 1995 Apr 7;247(4):541-6
Authors: Williamson MP, Kikuchi J, Asakura T
We have developed a program that can calculate proton NMR chemical shifts for proteins, using a set of co-ordinates provided for example from an X-ray or NMR structure. When...
nmrlearner
Journal club
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08-22-2010 03:41 AM
Programs for alignment of protein NMR ensembles
If you need to align models in your NMR ensemble, you can use the following programs to do so. MolMol
- Official website
- Linux binaries from Patrick Finerty website
- BioXRay distribution
SuperPose server
Suppose
nmrlearner
Structural analysis
0
09-14-2005 07:04 PM
Got bad PROCHECK Ramachandran plot? Try MolProbity
Don't get good numbers of Ramachandran plot for your protein when you use PROCHEK-NMR? This could be because PROCHEK most favored regions of Ramachandran plot are too small, not because your model is bad. Try to check your protein using MolProbity server from Richardson's lab.