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	SHIFTCOR: Protein Chemical Shift Re-referencing SHIFTCOR website SHIFTCOR is an automated shift correction program that uses statistical methods to compare and correct SHIFTX-predicted shifts relative to an input set of observed chemical shifts. SHIFTCOR uses several simple statistical approaches and pre-determined cutoff values to identify and correct potential referencing, assignment and typographical errors. SHIFTCOR identifies potential chemical shift referencing problems by comparing the difference between the average value of each set (1Hα, 13Cα, 13Cβ, 13CO, 15N and 1HN) of observed and predicted chemical shifts. The difference... gwnmr	01-10-2012 06:46 PM by gwnmr	0	2,051	NMR software
	RefDB: Re-referenced Protein Chemical Shift Database RefDB website In case of the BMRB, it is known that a significant portion of depositions use different or non-IUPAC chemical shift reference standards. This lack of uniformity makes it difficult to extract sequence/structure relationships from chemical shifts. Nearly 40% of protein entries deposited in the BioMagResBank appear to have at least one assignment error. In addition, it evident that protein NMR spectroscopists are increasingly adhering to recommended IUPAC (13)C and (15)N chemical shift referencing conventions, however, approximately 20% of newly deposited protein entries in the... gwnmr	01-10-2012 06:28 PM by gwnmr	0	2,060	NMR software
	SHIFTX2: Chemical Shift Prediction SHIFTX2 website SHIFTX2 is capable of rapidly and accurately calculating diamagnetic 1H, 13C and 15N chemical shifts from protein coordinate data. Compared to its predecessor (SHIFTX) and to other existing protein chemical shift prediction programs, SHIFTX2 is substantially more accurate (up to 26% better by correlation coefficient with an RMS error that is up to 3.3× smaller) than the next best performing program. It also provides significantly more coverage (up to 10% more), is significantly faster (up to 8.5×) and capable of calculating a wider variety of backbone and side chain... gwnmr	01-10-2012 06:13 PM by gwnmr	0	2,298	NMR software
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