Unanswered questions

How to process DOSY data in Mnova?

2 0 6k
answers votes views
Hi we have a DOSY dataset aquired using Doneshot.c sequence on a varian instrument. Will MNOVA process the dataset? Th...
Updated: Evgeny Fadeev 5771 Sep 09 '10 at 12:07

saturation transfer method in NMR

2 1 9k
answers votes views
What is meant by saturation transfer method in NMR? How it is useful in giving the structure of blue copper proteins lik...
Posted: santhosh kumar 11 / Updated: Justin Frank 1 Jun 29 '16 at 19:26

How to run 2D ROCSA spectrum only with imaginary on Varian?

2 1 4k
answers votes views
Hi this is Veera Mohan, I have a doubt about setting an experiment, that is I need to run ROCSA solid state nmr experim...
Updated: MOHAN 11 Sep 01 '10 at 18:51

How to fix the broad antiphase artifact after SOL function in nmrPipe?

2 0 8k
answers votes views
Hi, we've tried to apply SOL function of nmrPipe to process a 3D 13C edited NOESY. and the result is a wide antiphase-lo...
Posted: Evgeny Fadeev 5771 / Updated: sekhar Talluri 621 Apr 26 '11 at 11:04

How to convert Xplor distance restraint to Amber?

2 1 5k
answers votes views
Hi I am wondering if anyone knows a way to convert Xplor distance_restraint files to Amber format (7 or 8 column). Regar...
Posted: rparkesh 11 / Updated: Raman Parkesh 1 Oct 02 '10 at 10:16

Relating 13C and 1H chemical shifts for representation of 2D CSPs

2 1 6k
answers votes views
Hi, our lab uses the following relationship for the calculation of normalized CSPs from 1H-15N HSQC spectra: CSPnorm = (...
Posted: Martin Williams 11 / Updated: eiso 31 Oct 11 '10 at 03:33

gradient shim map question

2 1 6k
answers votes views
Does anyone know for sure if a shim map is off center slightly left in a negative direction...and I assume it is a cente...
Updated: cal carpenter 11 Oct 26 '10 at 19:30

MatNMR for a 2D Spectrum

2 1 5k
answers votes views
Hi, Does anyone have experience using MatNMR to produce a 2D spectrum? Or know of any examples? I'm trying to follow t...
Updated: newToNMR 33 Nov 04 '10 at 23:03

what is different between nmrpipe and topspin softwares

2 1 7k
answers votes views
hi, i am new user to nmrpipe i want to know how this nmrpipe differs with topspin 2.1 software because when i use same p...
Posted: saship21 21 / Updated: Ganesh 21 Apr 18 '11 at 03:51

Is it possible to keep increment time as zero in 2D?

2 0 4k
answers votes views
hi,i want to run NOESYPHPR with increment time as zero (d0=0).If possible, which software is easy to stack plot(in 1D-fo...
Posted: saship21 21 / Updated: Evgeny Fadeev 5771 Nov 11 '10 at 20:35

Bruker GRPDLY Parameter

2 1 10323
answers votes views
I am new to working with Bruker-style NMR data and am experiencing confusion with regard to Bruker's digital filtering. ...
Posted: ChemMJW 99 / Updated: Kirk Marat 711 Nov 15 '10 at 09:10

two lines in acetone-d6

2 1 5k
answers votes views
We try to setup a used Bruker Avance 200 system. After frequency search we started to setup lock and shim file. Using D2...
Posted: Thomas Tr 11 / Updated: Evgeny Fadeev 5771 Nov 19 '10 at 12:23

How to check acquisition status of the NMR instrument remotely?

2 0 4k
answers votes views
Hello, does anyone know whether the instrument is busy or not by logging in remotely? How do you do that on the platfor...
Posted: Evgeny Fadeev 5771 / Updated: renee 56 Dec 16 '10 at 03:13

Inverted Spinning Sidebands

2 0 7k
answers votes views
Hello, My 1H MAS NMR spectrum comes out with the right spinning side band pointing up and the left one pointing down. ...
Updated: NMRUser61581 13 Jan 03 '11 at 10:04

converting pdb to cyana library file

2 1 6k
answers votes views
hello everyone, i work on modified amino acids. i have cartesian coordinates for these residues from crystal structure...
Posted: rajesh sonti 11 / Updated: eiso 31 Jan 13 '11 at 10:03

cs23d vs. cs-rosetta

2 1 6k
answers votes views
Does anybody have any thoughts on this ? I dont really know which is better, CS23D or CS-ROSETTA. Clearly they are ide...
Posted: j 131 / Updated: Thomas Garner 81 Jan 19 '11 at 08:05

Pureshift and Pureshift oneshot download problem

2 1 4k
answers votes views
Hi, I am interested in trying these two sequences, I amtrying to work out suitable parameters and thought the "sample da...
Updated: David Grace 11 Feb 07 '11 at 02:38

Distinguish between protonation and conformational change?

2 1 5k
answers votes views
Hi all, In a folded protein with 13C-delta labeled glutamates, how can one distinguish between chemical shift due to pr...
Posted: RCKC 11 / Updated: SankarampadiAravamudhan 91 Feb 27 '11 at 22:59

Correlations across glycosidic bonds

2 1 6k
answers votes views
I am studying carbohydrates and was wanting to know if it was possible to record correlations through the ether linkage ...
Posted: Thomas Garner 81 / Updated: SankarampadiAravamudhan 91 Apr 11 '11 at 01:04

About paragnetic impurities, inorganic salts, bad workups, etc. and their impact on small-molecule NMR spectra

2 1 20819
answers votes views
I sometimes face the challenge of explaining to my organic chemists that, even if no impurity signals are visible in the...
Posted: Sylvain Demanze 71 / Updated: djh 1 Aug 11 '11 at 03:19

same parameters but difference in phase why?

2 1 4k
answers votes views
hi, though this question seems to be easy for you but i am new for this software and to this field. Recently, i took sil...
Updated: Ganesh 21 Apr 24 '11 at 23:28

software for 1D-2D spectra assignment for small molecules

2 1 6k
answers votes views
Please advice good software for 1D and 2D spectra assignment and structure elucidation, for small organic molecules. I'm...
Posted: VVK 61 / Updated: Evgeny Fadeev 5771 May 23 '11 at 10:54

Methanol-d in chloroform-d

2 0 6k
answers votes views
Hi, This is a question related to the question I posted earlier titled "H NMR integration". I tried adding one drop of ...
Updated: Davis Chen 11 Jun 13 '11 at 20:39

NMR resonance Lock

2 1 4k
answers votes views
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 sho...
Posted: MONOJON 11 / Updated: Jerry Hirschinger 199 Jun 16 '11 at 09:46

Can correct TAUc be a sufficient evidence of the absence of aggregation?

2 0 6k
answers votes views
Hello! I am studying the protein backbone dynamics using the standard set of NMR relaxation parameters (R1, R2, NOE). ...
Posted: Andrey 1 / Updated: Yoan Monneau 136 Jul 01 '11 at 03:52

about sideband in solid-state NMR

2 1 12269
answers votes views
Hi, dear all, I've encounter a strange phenomemon. While the target speed of MAS was set to be 12kHz, the sidebands of ...
Posted: Frey 61 / Updated: Alexey Potapov 21 Jul 04 '11 at 10:17

Dimer and tetramer equilibrium identification of protein with NMR experiments

2 0 8k
answers votes views
Dear nmr wikiers could you please let me know is their any nmr experment to identification of Dimer and tetramer equil...
Posted: sri 71 / Updated: Justin Frank 1 Jun 29 '16 at 19:09

1,n-ADEQUATE setup

2 1 7k
answers votes views
I need to measure the 4-bond coupling into a group of unassigned quaternary carbons. I would like to use the 1,n-ADEQUAT...
Posted: Bowling 11 / Updated: Hessen 1 Jan 31 '15 at 13:56

Tuning probe failed after a dual probe was replaced with a BBI probe

2 0 4k
answers votes views
We generally use Dual to run 13C and BBI to run 2D. After changed the probe, the command "edhead" was used to set the pr...
Posted: Yaming Xu 1 / Updated: Paul 1 Aug 31 '11 at 14:02

13C quaternary centers in amino acids

2 0 5k
answers votes views
I've got a sample of about 5mg of an amino acid that is the final product of a a synthesis. Due to the long relaxation t...
Posted: Eneas 1 / Updated: Matthew Revington 41 Sep 06 '11 at 09:04
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