Hello all, In some interleaved relaxation experiments, we've noticed that one of our spectrometers is having trouble locking and the signals (FIDs) shift ever
[NMRpipe Yahoo group] Correct for a shifting lock
Correct for a shifting lock
Hello all, In some interleaved relaxation experiments, we've noticed that one of our spectrometers is having trouble locking and the signals (FIDs) shift ever
More...
NMRpipe Yahoo group news
News from other NMR forums
0
02-06-2012 03:54 PM
[Question from NMRWiki Q&A forum] NMR Lock signal
NMR Lock signal
THis is my lock signal....what is up with it, and what do I do?https://picasaweb.google.com/113100759436397078363/LockSignal02#slideshow/5631842657786659330
Check if somebody has answered this question on NMRWiki QA forum
nmrlearner
News from other NMR forums
0
07-21-2011 10:31 PM
[Question from NMRWiki Q&A forum] Can correct TAUc be a sufficient evidence of the absence of aggregation?
Can correct TAUc be a sufficient evidence of the absence of aggregation?
Hello!
I am studying the protein backbone dynamics using the standard set of NMR relaxation parameters (R1, R2, NOE). I would like to be sure that there is no aggregation in the sample, and I have doubts about it so far. The best evidence I have is that overall rotational correlation time TAUc, predicted by HYDRONMR, matches exactly the one calculated from averaged R2/R1 values. Can anyone tell me for sure it is enough and I can be sure that protein doesn't form dimers/oligomers?
Thanks!
nmrlearner
News from other NMR forums
0
06-10-2011 01:50 PM
[Question from NMRWiki Q&A forum] NMR resonance Lock
NMR resonance Lock
I am running a varian gemini 300 on SUN microsystems with UNIX. I am trying to lock on my sample, and my lock is not showing up as a "step" as usual. Instead, it has troughs in it. What are some options in fixing this, or is this acceptable?
-Jon K.
Check if somebody has answered this question on NMRWiki QA forum
nmrlearner
News from other NMR forums
0
06-07-2011 01:01 AM
[Question from NMRWiki Q&A forum] Correct mathematical formulas of the important window functions
Correct mathematical formulas of the important window functions
Hi,
regarding my C++/Qt NMR processing application (see http://qa.nmrwiki.org/question/149/problem-reading-and-transforming-vendor-data-using-cqt or http://cutenmr.sourceforge.net/) I have a question concerning the window functions.
I did research in the literature but could not find the "correct" mathematical formulas of the important window functions (exponential, gaussian, sine, sine squared, TRAF). For the gaussian function I found:
exp(-(t*LB)^2)
nmrlearner
News from other NMR forums
0
09-19-2010 06:03 PM
[NMR software blog] Can Zero-Filling Correct the Baseline?
Can Zero-Filling Correct the Baseline?
I want to show you a proton spectrum that has puzzled me during the last weeks. It contains something that's quite typical and something that I can't explain. I have processed the spectrum in two different ways, with zero-filling and without it. The spectrum without zero-filling is black, the spectrum with zero-filling is green (the number of points is doubled).
http://2.bp.blogspot.com/_ROkYShLRKqA/TGu61b5bG7I/AAAAAAAAAUQ/9AbsXlWbKUY/s400/TMS.pngThis detail is the bottom part of the TMS signal (magnified to show the ringing effect). Where does the...
nmrlearner
News from NMR blogs
0
08-21-2010 06:29 PM
Correct mis-referenced NMR shifts with MANI-LACS
MANI-LACS Server v. 0.1 (Beta)
MANI-LACS offers a new approach to NMR reference correction and outlier identification that achieves excellent results using only residue specific chemical shift assignment.
http://bija.nmrfam.wisc.edu/MANI-LACS/seeds.jpg
Instructions for preparing input files
Database of chemical shift corrections
nmrlearner
General
0
08-14-2005 09:11 PM
New way to correct misreferenced chemical shifts
A simple method to adjust inconsistently referenced 13C and 15N chemical shift assignments of proteins.
Wang Y, Wishart DS.
J Biomol NMR. 2005 Feb;31(2):143-8.
http://pronmr.com/yunjunwang_files/yjw_pssi.jpg
Abstract:
Correct for a shifting lock
Linear Mode
