[NMR paper] Mucoadhesivity and release properties of quaternary ammonium-chitosan conjugates and their nanoparticulate supramolecular aggregates: an NMR investigation.
Mucoadhesivity and release properties of quaternary ammonium-chitosan conjugates and their nanoparticulate supramolecular aggregates: an NMR investigation.
Related ArticlesMucoadhesivity and release properties of quaternary ammonium-chitosan conjugates and their nanoparticulate supramolecular aggregates: an NMR investigation.
Int J Pharm. 2014 Jan 30;461(1-2):489-94
Authors: Uccello-Barretta G, Balzano F, Aiello F, Senatore A, Fabiano A, Zambito Y
Abstract
Selective relaxation rate measurements effectively proved the affinity of dexamethasone 21-phosphate disodium salt for quaternary ammonium-chitosan conjugates, their thiolated derivatives and the corresponding nanostructured aggregates. Affinity was also probed by dynamic dialysis. The release profile of dexamethasone loaded nanoparticles was defined by quantitative NMR and interrupted dialysis experiments, and mucoadhesivity of empty nanoparticles was effectively probed by selective relaxation rate measurements.
[NMR paper] Using (15) N-Ammonium to Characterise and Map Potassium Binding Sites in Proteins by NMR Spectroscopy.
Using (15) N-Ammonium to Characterise and Map Potassium Binding Sites in Proteins by NMR Spectroscopy.
Related Articles Using (15) N-Ammonium to Characterise and Map Potassium Binding Sites in Proteins by NMR Spectroscopy.
Chembiochem. 2014 Feb 12;
Authors: Werbeck ND, Kirkpatrick J, Reinstein J, Hansen DF
Abstract
A variety of enzymes are activated by the binding of potassium ions. The potassium binding sites of these enzymes are very specific, but ammonium ions can often replace potassium ions in vitro because of their similar ionic...
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02-13-2014 03:35 PM
[NMR paper] A solution NMR investigation into the impaired self-assembly properties of two murine amelogenins containing the point mutations T21->I or P41->T.
A solution NMR investigation into the impaired self-assembly properties of two murine amelogenins containing the point mutations T21->I or P41->T.
A solution NMR investigation into the impaired self-assembly properties of two murine amelogenins containing the point mutations T21->I or P41->T.
Arch Biochem Biophys. 2013 Jul 26;
Authors: Buchko GW, Lin G, Tarasevich BJ, Shaw WJ
Abstract
Amelogenesis imperfecta describes a group of inherited disorders that results in defective tooth enamel. Two disorders associated with human amelogenesis...
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07-31-2013 12:00 PM
[NMR images] 14N NMR Spectrum of ammonium
http://131.104.156.23/Lectures/CHEM_207/CHM_207_Pictures_NMR/NMR_multiplets_14N_199Hg-II.gif
http://131.104.156.23/Lectures/CHEM_207/CHM_207_NMR.htm
14/01/2012 12:42:04 PM GMT
14N NMR Spectrum of ammonium
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01-14-2012 12:40 PM
[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.
Check if somebody has answered this question on NMRWiki QA forum
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09-01-2011 07:20 AM
Proton NMR Based Investigation of the Effects of Temperature and NaCl on Micellar Properties of CHAPS.
Proton NMR Based Investigation of the Effects of Temperature and NaCl on Micellar Properties of CHAPS.
Proton NMR Based Investigation of the Effects of Temperature and NaCl on Micellar Properties of CHAPS.
J Phys Chem B. 2011 Feb 15;
Authors: Qin X, Liu M, Zhang X, Yang D
The effects of temperature and NaCl on the micellization of CHAPS, a zwitterionic detergent widely used in membrane protein studies, have been investigated by NMR spectroscopy. We found that the two apparent critical micelle concentration (cmc) values of CHAPS decrease with the...
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02-17-2011 07:58 PM
Investigation of the dynamical properties of water in elastin by deuterium Double Qua
Investigation of the dynamical properties of water in elastin by deuterium Double Quantum Filtered NMR.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Investigation of the dynamical properties of water in elastin by deuterium Double Quantum Filtered NMR.
J Magn Reson. 2010 Jul;205(1):86-92
Authors: Sun C, Boutis GS
The anisotropic motion of tightly bound waters of hydration in bovine nuchal ligament elastin has been studied by deuterium Double Quantum Filtered (DQF) NMR....
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09-22-2010 05:27 AM
[NMR paper] Characterization of covalent protein conjugates using solid-state 13C NMR spectroscop
Characterization of covalent protein conjugates using solid-state 13C NMR spectroscopy.
Related Articles Characterization of covalent protein conjugates using solid-state 13C NMR spectroscopy.
Biochemistry. 1991 Jul 23;30(29):7057-62
Authors: Garbow JR, Fujiwara H, Sharp CR, Logusch EW
Cross-polarization magic-angle spinning (CPMAS) 13C NMR spectroscopy has been used to characterize covalent conjugates of alachlor, an alpha-chloroacetamide hapten, with glutathione (GSH) and bovine serum albumin (BSA). The solid-state NMR method demonstrates...
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08-21-2010 11:12 PM
[NMR paper] Characterization of covalent protein conjugates using solid-state 13C NMR spectroscop
Characterization of covalent protein conjugates using solid-state 13C NMR spectroscopy.
Related Articles Characterization of covalent protein conjugates using solid-state 13C NMR spectroscopy.
Biochemistry. 1991 Jul 23;30(29):7057-62
Authors: Garbow JR, Fujiwara H, Sharp CR, Logusch EW
Cross-polarization magic-angle spinning (CPMAS) 13C NMR spectroscopy has been used to characterize covalent conjugates of alachlor, an alpha-chloroacetamide hapten, with glutathione (GSH) and bovine serum albumin (BSA). The solid-state NMR method demonstrates...
Mucoadhesivity and release properties of quaternary ammonium-chitosan conjugates and their nanoparticulate supramolecular aggregates: an NMR investigation.
Linear Mode
