Results 171 to 180 of about 1,315,982 (211)
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Peptides (Bound Amino Acids) and Free Amino Acids
1955The term “peptide” as distinct from “protein” has come to be reserved for compounds having molecular weight less than, at most, 10,000 or, if of higher molecular weight, having unusually simple amino acid composition. Natural compounds so far shown unequivocally to belong to this class do not exhibit denaturation in its usual sense or, particularly ...
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Extraction of free amino acids
American Potato Journal, 1988A solvent is percolated through the sample of freeze-dried potatoes in a column until no more free amino acids are extracted. The simple method can operate unattended and with other materials. NH3 and ARG are the last to be removed. Maillard intermediates survive.
Eugene A. Talley, Mary Jo Egoville
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Biochemical Systematics and Ecology, 1980
Abstract Pollens from Pinus canariensis, P. nigra, P. pinaster, P. pinea, Castanea sativa, Magnolia grandiflora, Olea sativa cv frantoio , cv itrana , cv pisciottana were examined for their free amino acid composition. A large amount of proline was found in all species; pollens of Olea also contain a large amount of serine.
DE SIMONE, FRANCESCO +3 more
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Abstract Pollens from Pinus canariensis, P. nigra, P. pinaster, P. pinea, Castanea sativa, Magnolia grandiflora, Olea sativa cv frantoio , cv itrana , cv pisciottana were examined for their free amino acid composition. A large amount of proline was found in all species; pollens of Olea also contain a large amount of serine.
DE SIMONE, FRANCESCO +3 more
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[Free amino acids in calf embryos].
Bollettino della Societa italiana di biologia sperimentale, 1979In this work have been reported the research results tending to establish the free amino acidis concentration, existing in the calf embryos. The free embryonal amino acidis composition has been determined through an analysis effected with "Amino Acid Analyzer".
GALLONE U +5 more
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Coherent manipulation of free amino acids fluorescence
Physical Chemistry Chemical Physics, 2012Coherent manipulation of molecular wavepackets in biomolecules might contribute to the quest towards label-free cellular imaging and protein identification. We report the use of optimally tailored UV laser pulses in pump-probe depletion experiments that selectively enhance or decrease fluorescence between two aromatic amino acids: tryptophan (Trp) and ...
Rondi, Ariana +4 more
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Free amino acids inLimnaea III
Experientia, 1964L'auteur a constate que les acides amines libres chez les gasteropodes du genreLimnaea, immediatement apres l'eclosion, sont les memes que chez les adultes. Il a essaye aussi d'identifier chez des sujets adultes les quatre acides-amines libres les plus caracteristiques. Deux d'entr'eux sont probablement l'acide glutamique et la serine.
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The Journal of organic chemistry, 1995
Analogues of natural amino acids, in which the α-proton is replaced by an unsubstituted epoxide ring, are potential mechanism-based inhibitors for pyridoxal phosphate dependent enzymes.1 Yet, free α-oxiranyl amino acids have remained elusive until now. The synthesis of an α-(phenyl-substituted)oxiranyl amino ester has been reported.
Berkowitz, David B. +1 more
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Analogues of natural amino acids, in which the α-proton is replaced by an unsubstituted epoxide ring, are potential mechanism-based inhibitors for pyridoxal phosphate dependent enzymes.1 Yet, free α-oxiranyl amino acids have remained elusive until now. The synthesis of an α-(phenyl-substituted)oxiranyl amino ester has been reported.
Berkowitz, David B. +1 more
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FREE AMINO ACIDS OF FETAL BRAIN
Journal of Neurochemistry, 1969Abstract— Injection of each of the branched chain amino acids into maternal rats from the 14th to 21st day of pregnancy resulted in increased levels of these compounds in fetal serum. Furthermore, these amino acids were found in high concentration in fetal brain.
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γ-Amino-butyric Acid and Other Free Amino-acids in the Coconut
Nature, 1956γ-AMINO-BUTYRIC acid has been described as present in the aqueous and alcoholic extracts of a number of plant and animal tissues1–7. In the course of studies on the nitrogenous constituents of coconut (Cocos nucifera) endosperm using paper chromatography, I have found this amino-acid to be present in amounts apparently larger than any other amino-acid ...
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