[NMR paper] Chiral discrimination of ?-hydroxy acids and N-Ts-?-amino acids induced by tetraaza macrocyclic chiral solvating agents by using (1)H NMR spectroscopy.
Chiral discrimination of ?-hydroxy acids and N-Ts-?-amino acids induced by tetraaza macrocyclic chiral solvating agents by using (1)H NMR spectroscopy.
Related Articles Chiral discrimination of ?-hydroxy acids and N-Ts-?-amino acids induced by tetraaza macrocyclic chiral solvating agents by using (1)H NMR spectroscopy.
Org Biomol Chem. 2017 Jan 27;:
Authors: Lv C, Feng L, Zhao H, Wang G, Stavropoulos P, Ai L
Abstract
In the field of chiral recognition, reported chiral discrimination by (1)H NMR spectroscopy has mainly focused on...
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01-28-2017 08:29 PM
[NMR paper] Analysis of Proteinogenic Amino Acid and Starch Labeling by 2D NMR.
Analysis of Proteinogenic Amino Acid and Starch Labeling by 2D NMR.
Analysis of Proteinogenic Amino Acid and Starch Labeling by 2D NMR.
Methods Mol Biol. 2014;1090:87-105
Authors: Truong Q, Shanks JV
Abstract
Comprehensive analysis of isotopic labeling patterns of metabolites in proteinogenic amino acids and starch for plant systems lay in the powerful tool of 2-Dimensional Nuclear Magnetic Resonance (2D NMR) spectroscopy. From (13)C-labeling experiments, 2D NMR provides information on the labeling of particular carbon positions, which...
[Question from NMRWiki Q&A forum] 13C quaternary centers in amino acids
13C quaternary centers in amino acids
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 time that the carboxylic and the alpha C we only got a 200 varian Mercury instrument and we're unable to obtain those signals. I was wondering if an APT is better than DEPT, because we're only interested in this signals and i've heard the overall pulse sequence is shorter than the DEPT, increasing the number of scans in the same period of time.
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09-01-2011 07:20 AM
[Question from NMRWiki Q&A forum] 13C cuaternary centers in amino acids
13C cuaternary centers in amino acids
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 time that the carboxilic and the alpha C we only got a 200 varian Mercury instrument and we're unable to obtain those signals. I was wondering if an APT is better than DEPT, because we're only interested in this signals and i've heart the overall pulse sequence is shorter than the DEPT, increasing the number of scans in the same period of time
Check if somebody has answered this question on NMRWiki QA forum
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08-31-2011 07:12 PM
[KPWU blog] Names of Atoms of Amino acids
Names of Atoms of Amino acids
I really hate the inconsistent nomenclature of atoms of amino acids between different programs/database. I finished all NOESY assignment on Sparky using PDB nomenclature and the Sparky XPLOR constraint plugin (shortcut xf) doesn’t take care of the differences between XPLOR and PDB. Thus I have to find a table showing me the differences of names http://stats.wordpress.com/b.gif?host=kpwu.wordpress.com&blog=76132&post=262&subd=kpwu&ref=&feed=1
Go to KPWU blog to read complete post.
[NMR paper] Comparison between the phi distribution of the amino acids in the protein database an
Comparison between the phi distribution of the amino acids in the protein database and NMR data indicates that amino acids have various phi propensities in the random coil conformation.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Comparison between the phi distribution of the amino acids in the protein database and NMR data indicates that amino acids have various phi propensities in the random coil conformation.
J Mol Biol. 1995 Nov 24;254(2):322-33
Authors: Serrano L
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Engineering of a Peptide ?-N-Methyltransferase to Methylate Non-Proteinogenic Amino Acids
Linear Mode
