[NMR paper] Decoupling Protein Concentration and Aggregate Content Using Diffusion and Water NMR
Decoupling Protein Concentration and Aggregate Content Using Diffusion and Water NMR
Protein-based biopharmaceutical drugs, such as monoclonal antibodies, account for the majority of the best-selling drugs globally in recent years. For bioprocesses, key performance indicators are the concentration and aggregate level for the product being produced. In water NMR (wNMR), the use of the water transverse relaxation rate has been previously used to determine protein concentration and aggregate level; however, it cannot be used to separate between them without using an...
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PFG-NMR self-diffusion in casein dispersions: Effects of probe size and protein aggregate size
PFG-NMR self-diffusion in casein dispersions: Effects of probe size and protein aggregate size
June 2013
Publication year: 2013
Source:Food Hydrocolloids, Volume 31, Issue 2</br>
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The self-diffusion coefficients of different molecular weight PEGs (Polyethylene glycol) and casein particles were measured, using a pulsed-gradient nuclear magnetic resonance technique (PFG-NMR), in native phosphocaseinate (NPC) and sodium caseinate (SC) dispersions where caseins are not structured into micelles. The dependence of the PEG self-diffusion coefficient on the PEG size, casein...
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02-03-2013 10:05 AM
[NMR paper] Quantitative evaluation of water content in a solid protein by deuterium NMR.
Quantitative evaluation of water content in a solid protein by deuterium NMR.
Related Articles Quantitative evaluation of water content in a solid protein by deuterium NMR.
Biochim Biophys Acta. 1992 Feb 26;1119(2):178-84
Authors: Tamura A, Akasaka K
A method for evaluating absolute water content in a solid protein based on deuterium NMR measurements in solution is described. By dissolving the hydrated solid protein, which has been specifically deuterium-labeled, into deuterium-depleted water and by comparing the deuterium NMR signal intensity...