Results 1 to 10 of about 201,366 (143)

Aspartic Acid in Health and Disease. [PDF]

open access: yesNutrients, 2023
Aspartic acid exists in L- and D-isoforms (L-Asp and D-Asp). Most L-Asp is synthesized by mitochondrial aspartate aminotransferase from oxaloacetate and glutamate acquired by glutamine deamidation, particularly in the liver and tumor cells, and transamination of branched-chain amino acids (BCAAs), particularly in muscles.
Holeček M.
europepmc   +3 more sources

A route to anionic hydrophilic films of copolymers of l-leucine, l-aspartic acid and l-aspartic acid esters [PDF]

open access: yes, 1975
A series of copolymers of l-leucine and β-benzyl-l-aspartate [Leu/Asp(OBz)] covering the range 30–70 mol % of l-leucine, was synthesized by the N-carboxyanhydride (NCA) method.
Bantjes, A., Feijen, J., Sederel, W.L.
core   +10 more sources

Immunohistochemical localisation of d-β-aspartic acid in pingueculae [PDF]

open access: yes, 2009
Background: D-β-Aspartic acid residues, which are biologically uncommon, have been reported to accumulate in various proteins of the living body with age.
Fujii N   +6 more
core   +1 more source

A NEW SYNTHESIS OF ASPARTIC ACID [PDF]

open access: yesJournal of Biological Chemistry, 1930
In previous syntheses of aspartic acid the following reactions have been used: The decomposition of acid ammonium malate by heat,1 the racemization of active aspartic acid2 and active asparagine,3 the reaction of maleic or fumaric acid with ammonia,4 the reduction of oxalacetic ester oxime,5 the reaction of silver fumarate or potassium acid fumarate ...
B. W. Smart, Max S. Dunn
openaire   +2 more sources

Biodegradability and tissue reaction of random copolymers of L-leucine, L-aspartic acid, and L-aspartic acid esters [PDF]

open access: yes, 1977
A series of copoly(α-amino acids) with varying percentages of hydrophilic (l-aspartic acid) and hydrophobic monomers (l-leucine, ß-methyl-l-aspartate, and ß-benzyl-l-aspartate) were implanted subcutaneously in rats and the macroscopic degradation ...
Bantjes, A.   +4 more
core   +3 more sources

Gamma Irradiation of Aqueos Solution of L-Aspartic Acid, L-Aspartic Acid in Solid State, and L-Aspartic Acid Adsorbed into Na-Montmorillonite: Its Relevance in Chemistry Prebiotic [PDF]

open access: yes, 2021
Aspartic acid is an amino acid present in the modern proteins, however, is considered a primitive amino acid hence its importance in prebiotic chemistry experiments studies.
Cruz-Castañeda, J.   +5 more
core   +2 more sources

Predicting protein decomposition: the case of aspartic-acid racemization kinetics [PDF]

open access: yes, 1999
The increase in proportion of the non-biological (D-) isomer of aspartic acid (Asp) relative to the L- isomer has been widely used in archaeology and geochemistry as a tool for dating. The method has proved controversial, particularly when used for bones.
A. C. T. van Duin   +24 more
core   +3 more sources

Differentiation Between Ripening Stages of Iberian Dry-Cured Ham According to the Free Amino Acids Content [PDF]

open access: yes, 2020
In this paper, the differentiation of three ripening stages, postsalting, drying, and cellar, of Iberian dry-cured ham has been carried out according to their free amino acids contents. Eighteen L-amino acids, alanine, 2-aminobutanoic acid, aspartic acid,
Alcázar Rueda, Ángela   +3 more
core   +1 more source

Metallkomplexe mit biologisch wichtigen Liganden, LXVIII [PDF]

open access: yes, 1993
The trischelate complexes of the dianion of aspartic acid and -methylaspartic acid (5-C5Me5) (R = H, Me) form adducts with alkali iodides MI (M = Li, Na, K).
Beck, Wolfgang   +2 more
core   +1 more source

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