Results 41 to 50 of about 280,610 (209)

Ostracode-based aminostratigraphy and aminochronology of a tufa system in central Spain [PDF]

open access: yes, 2005
In the Priego area, central Spain, extensive tufa deposits are located in three small tributaries located at the head of the 1000 kmlong Tagus River. The deposits are originated after karst-origin running waters emerged from the confines of the canyons ...
Andrews   +46 more
core   +2 more sources

Attenuation of cadmium induced oxidative stress in cucumber seedlings by modulating the photosynthesis and antioxidant machinery through foliar applied glutamic acid

open access: yesHorticultural Science, 2022
In recent decades, adverse effects of unexpected contaminants on the quality of crops have threatened both the food security and human health. Vegetable production in heavy metal contaminated soils is a serious concern regarding the quality of food ...
Summeya Munawar   +13 more
doaj   +1 more source

Glutamate biosynthesis in Bacillus azotofixans. 15N NMR and enzymatic studies [PDF]

open access: yes, 1988
Pathways of ammonia assimilation into glutamic acid in Bacillus azotofixans, a recently characterized nitrogen-fixing species of Bacillus, were investigated through observation by NMR spectroscopy of in vivo incorporation of 15N into glutamine and ...
Kanamori, Keiko   +2 more
core  

Crowding effect on helix-coil transition: beyond entropic stabilization

open access: yes, 2012
We report circular dichroism measurements on the helix-coil transition of poly(L-glutamic acid) in solution with polyethylene glycol (PEG) as a crowding agent.
A. Koutsioubas   +7 more
core   +1 more source

Binding of Glutamic Acid to Silver and Gold Nanoparticles Investigated by Surface-Enhanced Raman Spectroscopy

open access: yesBiosensors
Glutamate is the most important excitatory neurotransmitter, which is relevant for the study of several diseases such as amyotrophic lateral sclerosis and Alzheimer. It is the form L-glutamic acid (Glu) takes at physiologically relevant pHs.
Vlasta Mohaček-Grošev   +6 more
doaj   +1 more source

Nitrogen isotopes provide clues to amino acid metabolism in human colorectal cancer cells

open access: yesScientific Reports, 2017
Glutamic acid and alanine make up more than 60 per cent of the total amino acids in the human body. Glutamine is a significant source of energy for cells and also a prime donor of nitrogen in the biosynthesis of many amino acids.
R. V. Krishnamurthy   +2 more
doaj   +1 more source

Quantification of Glutamate and Aspartate by Ultra-High Performance Liquid Chromatography

open access: yesMolecules, 2018
Glutamic and aspartic acid fulfil numerous functions in organisms. They are proteinogenic amino acids, they function as neurotransmitters, and glutamic acid links the citrate cycle with amino acid metabolism. In addition, glutamic acid is a precursor for
Carlos Agius   +3 more
doaj   +1 more source

Effect of the nitrogen source on glutamine and alanine biosynthesis in Neurospora crassa. An in vivo 15N nuclear magnetic resonance study [PDF]

open access: yes, 1982
The influences of different nitrogen sources on the relative rates of biosynthesis of glutamine and alanine have been studied by 15N nuclear magnetic resonance spectroscopy of intact Neurospora crassa mycelia suspensions.
Kanamori, Keiko   +3 more
core  

Change of Indices of the Amino Acid Composition of Rats' Hearts at Artificial Hypobiosis [PDF]

open access: yes, 2019
A series of unsolved questions in such sciences as: medicine, veterinary, biology still exist in the modern world. One of them is a search for new promising ways of anaesthetization, at which it would be unnecessary to use apparatuses as an “artificial ...
Umanska, A. (Anna)
core   +3 more sources

A reappraisal of nitrogen-to-protein conversion factors in cassava roots. [S10-05] [PDF]

open access: yes, 2012
A study was conducted comparing the amino acid profiles of 10 commercial varieties (COL) and 15 clones with the highest levels of nitrogen (HIN) over two years of harvests. The highest nitrogen values detected in roots to date are close to 1.30%.
Ceballos, Hernan   +7 more
core  

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