Id |
Subject |
Object |
Predicate |
Lexical cue |
T907 |
0-40 |
Sentence |
denotes |
NMR Technique Advantages Disadvantages |
T908 |
41-198 |
Sentence |
denotes |
1D-NMR Ability to identify simple chemical compounds.High quality resolution and sensitivity for many 1D experiments.Less time consuming compared to 2D NMR. |
T909 |
200-393 |
Sentence |
denotes |
Compared to 2D NMR less details can be obtained for more complex molecules.For nuclei other than 1H and 19F, relative sensitivity is fairly low—requires extra labeling to obtain better spectra. |
T910 |
394-574 |
Sentence |
denotes |
2D NMR Ability to identify complex molecules and observe different interactions between the nuclei, e.g., correlations between all spins in one spin system using TOCSY experiment. |
T911 |
576-636 |
Sentence |
denotes |
Requires long times to obtain a proper spectra (up to days). |
T912 |
637-697 |
Sentence |
denotes |
Ultrafast 2D NMR Greatly reduces time to obtain 2D spectra. |
T913 |
699-719 |
Sentence |
denotes |
Reduced sensitivity. |
T914 |
720-775 |
Sentence |
denotes |
SOFAST Significantly reduces acquisition time of HMQC. |
T915 |
777-802 |
Sentence |
denotes |
Relatively low resolution |
T916 |
803-882 |
Sentence |
denotes |
NUS Lowers the time of measurement while keeping the same level of resolution. |
T917 |
884-985 |
Sentence |
denotes |
Requires use of reconstruction algorithms since missing data points can lead to artifacts in spectra. |
T918 |
986-1116 |
Sentence |
denotes |
MDD Multidimensional data are “broken” to one dimensional, which are easier to analyze.Ability to resolve overlapping resonances. |
T919 |
1119-1202 |
Sentence |
denotes |
Data must be (approximately) symmetrical (Lorentzian shape) to obtain good spectra. |
T920 |
1203-1243 |
Sentence |
denotes |
CS Good reconstruction of weaker peaks. |
T921 |
1245-1302 |
Sentence |
denotes |
Large computational costs, low performance on noisy data. |
T922 |
1303-1354 |
Sentence |
denotes |
MAX ENT Significant reduction in acquisition time. |
T923 |
1356-1443 |
Sentence |
denotes |
Nominally Lorentzian peak shapes may be distorted, and peak intensities may be altered. |
T924 |
1444-1492 |
Sentence |
denotes |
IST Greatly reduced time to obtain NMR spectra. |
T925 |
1494-1543 |
Sentence |
denotes |
Requires a grid of uniformly sampled data points. |
T926 |
1544-1650 |
Sentence |
denotes |
FBDD Often makes stronger binding ligands from weakly binding fragments.Less time and resource intensive. |
T927 |
1652-1713 |
Sentence |
denotes |
Can be used only for small fragments of compound of interest. |
T928 |
1714-1766 |
Sentence |
denotes |
SAR Direct observation of target binding to ligand. |
T929 |
1767-1813 |
Sentence |
denotes |
Several types of NMR experiments are possible. |
T930 |
1815-1918 |
Sentence |
denotes |
Inability to distinguish binding modes, difficult to gage the “true” binding site of ligand to protein. |
T931 |
1919-2028 |
Sentence |
denotes |
STD Only requires a small amount of sample.Highly reproducible.Allows direct observations of ligand binding. |
T932 |
2030-2104 |
Sentence |
denotes |
Only works for ligands with low binding affinity (fast chemical exchange). |
T933 |
2105-2144 |
Sentence |
denotes |
Inability to distinguish binding modes. |
T934 |
2145-2221 |
Sentence |
denotes |
In cell NMR In vivo studies are possible, can focus on specific cell parts. |
T935 |
2223-2267 |
Sentence |
denotes |
Special labeling techniques may be required. |
T936 |
2268-2313 |
Sentence |
denotes |
Spectra may be more challenging to interpret. |
T937 |
2314-2483 |
Sentence |
denotes |
In silico + NMR Can model protein drug interactions, helps speed up and reduce cost of drug delivery Protein models need to be validated through experimental approach. |
T938 |
2484-2627 |
Sentence |
denotes |
PNMR Can observe proteins interacting with metal ions, long observation distance (10-25 angstroms) between paramagnetic left and nearby atoms. |
T939 |
2629-2670 |
Sentence |
denotes |
Paramagnetic left required in the system. |
T940 |
2671-2781 |
Sentence |
denotes |
ALARM NMR Elimination of false positives from HTS methods It requires synthesis of human La antigen protein. |
T941 |
2782-2945 |
Sentence |
denotes |
ssNMR Enables the characterization of a chemical compound in a solid-state form such as a tablet/pill.Provides insight into the physical properties of a compound. |
T942 |
2947-3034 |
Sentence |
denotes |
Significant broadening of the spectral lineshapes due to anisotropic spin interactions. |
T943 |
3035-3123 |
Sentence |
denotes |
Relaxation editing Noticeable difference in spectra of binding and non-binding ligands. |
T944 |
3125-3193 |
Sentence |
denotes |
Sets the lower limit of time for which experiments can be performed. |