Results 161 to 170 of about 20,836 (204)

Glycine betaine as a cryoprotectant for prokaryotes

Journal of Microbiological Methods, 2004
Osmoprotectants are low molecular weight, hydrophilic, nontoxic molecules that assist a cell under osmotic stress to stabilize its concentration of internal solutes. These properties are similar to compounds used as cryoprotectants for the preservation of prokaryotic cells during freezing.
David, Cleland, Paul, Krader, Coral, McCree, Jane, Tang, David, Emerson   +4 more
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Glycine betaine and proline betaine in human blood and urine

Biochimica et Biophysica Acta (BBA) - General Subjects, 1994
In healthy human subjects, glycine betaine concentrations in the blood plasma are normally between 20 and 60 mumol/l, adult males tending to have higher concentrations than females. Proline betaine concentrations are more variable, ranging from undetectable to about 50 mumol/l. Both betaines are present in urine.
M, Lever, P C, Sizeland, L M, Bason, C M, Hayman, S T, Chambers   +4 more
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Transport of glycine-betaine by Listeria monocytogenes

Archives of Microbiology, 1994
Uptake of [14C]glycine-betaine by Listeria monocytogenes was stimulated by NaCl with optimal stimulation at 0.4-0.5 M. The glycine-betaine transport system had a Km of 22 microM and a Vmax of 11.7 nmol-1 min-1 mg-1 protein when grown in the absence of NaCl. When grown in the presence of 0.8 M NaCl the Vmax increased to 27.0 nmol-1 min-1 mg-1 protein in
R A, Patchett, A F, Kelly, R G, Kroll
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Can glycine betaine denature proteins?

Physical Chemistry Chemical Physics, 2020
Glycine betaine (GB) is a naturally occurring osmolyte that has been widely recognized as a protein protectant.
Arusha Acharyya, Dayoung Shin, Thomas Troxler, Feng Gai   +3 more
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Freezing of Stallion Semen with Addition of Glycine Betaine

Journal of Veterinary Medicine Series A, 1999
The effect of addition of glycine betaine to a lactose‐EDTA freezing medium on the post‐thaw motility of stallion semen was determined. The first three semen‐rich fractions of nine stallions were collected with an open‐end Krakow artificial vagina on consecutive weekdays. Semen was frozen using the Hannover method with freezing media containing glycine
Lindeberg, H., Kurten, A., Koskinen, Erkki, Katila, T.   +3 more
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Photoionization of glycine-betaine: A permanent zwitterion

Journal of Molecular Liquids, 2021
Abstract The electronic structure of permanent zwitterion, glycine-betaine (GBZW) has been studied using high-level ab initio method: equation-of-motion couple-cluster (EOM-CCSD) method. The photoelectron spectra of GBZW have been simulated in the valence and core ionization regions. The zwitterion shows remarkable stability with standard enthalpy of
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Glycine betaine aldehyde dehydrogenase from Bacillus subtilis : characterization of an enzyme required for the synthesis of the osmoprotectant glycine betaine

Archives of Microbiology, 1997
Production of the compatible solute glycine betaine from its precursors choline or glycine betaine aldehyde confers a considerable level of tolerance against high osmolarity stress to the soil bacterium Bacillus subtilis. The glycine betaine aldehyde dehydrogenase GbsA is an integral part of the osmoregulatory glycine betaine synthesis pathway.
J, Boch, G, Nau-Wagner, S, Kneip, E, Bremer   +3 more
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The Exclusion of Glycine Betaine from Anionic Biopolymer Surface:  Why Glycine Betaine Is an Effective Osmoprotectant but Also a Compatible Solute

Biochemistry, 2004
Paradoxically, glycine betaine (N,N,N-trimethyl glycine; GB) in vivo is both an effective osmoprotectant (efficient at increasing cytoplasmic osmolality and growth rate) and a compatible solute (without deleterious effects on biopolymer function, including stability and activity).
Daniel J, Felitsky, Jonathan G, Cannon, Michael W, Capp, Jiang, Hong, Adam W, Van Wynsberghe, Charles F, Anderson, M Thomas, Record   +6 more
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Effects of glycine betaine and glycerophosphocholine on thermal stability of ribonuclease

American Journal of Physiology-Renal Physiology, 1998
Urea in renal medullas is sufficiently high to perturb macromolecules, yet the cells survive and function. The counteracting osmolytes hypothesis holds that methylamines, such as glycine betaine (betaine) and glycerophosphocholine (GPC) in renal medullas, stabilize macromolecules and oppose the effects of urea.
M B, Burg, E M, Peters
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Antibacterial activity of glycine betaine analogues: involvement of osmoporters

Bioorganic & Medicinal Chemistry Letters, 2004
Glycine betaine (GB) analogues were obtained using solid phase organic synthesis and assayed for their toxic activity against 15 Gram positive and Gram negative bacteria. Four benzyl derivatives of GB were selected to determine their effect on bacterial growth. Bacteriostatic and lethal effects were observed for compound 1 and compound 2, respectively.
Cosquer, Anne, Ficamos, Morgane, Jebbar, Mohamed, Corbel, Jean-Charles, Choquet, Gwénaëlle, Fontenelle, Catherine, Uriac, Philippe, Bernard, Théophile   +7 more
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