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Are dissolved free amino acids free?
Microbial Ecology, 1984Microbial assimilation of 3 amino acids (glutamic acid, alanine, and ornithine) was characterized in 3 lakes and 2 marine stations using the Michaelis-Menten kinetic approach. The calculated Kt + Sn concentrations were related to chemical concentration measurements of dissolved free amino acids (DFAA) to evaluate the biological and the chemical ...
N O, Jørgensen, M, Søndergaard
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Axoplasmic transport of free amino acids
Brain Research, 1973Abstract (1) Following the injection of l -[14C]proline into one eye in carp, the label appeared in the contralateral optic nerve via axoplasmic flow. As reported previously, protein-bound activity showed faster and slower axoplasmic transport. Labeled free proline appeared in nerve before labeled protein and thus did not originate from labeled ...
V, Csanyi, J, Gervai, A, Lajtha
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Lysosomal pool of free-amino acids
Biochemical and Biophysical Research Communications, 1981Abstract Free (non-protein) amino acids were measured in whole rat liver and in unmodified lysosomes which were prepared from rat liver by the technique of free-flow electrophoresis. Significant intralysosomal pools of threonine, serine, valine, cystine, methionine, isoleucine, leucine, tyrosine, phenylalanine, lysine and arginine were found.
E, Harms, N, Gochman, J A, Schneider
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Free amino acids in spider hemolymph
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2008We examined the free amino acid composition of hemolymph from representatives of five spider families with an interest in knowing if the amino acid profile in the hemolymph of orb-web-building spiders reflects the high demands for small organic compounds in the sticky droplets of their webs.
Tillinghast, Edward K., Townley, Mark A.
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Free Amino Acid Content of Perilymph
Archives of Otolaryngology - Head and Neck Surgery, 1971The free amino acid content of horse perilymph, cerebrospinal fluid, and blood serum was comparatively studied. The results obtained show clear-cut differences between the three fluids, and suggest that perilymph may be considered as a biological fluid with its own specific characteristics, probably correlated to the metabolism of its secreting ...
S, Crifò, C, Crifò
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Freeing of Amino-acids from Proteins
Nature, 1965THE large amount of free amino-acid which surrounds haemoglobin freshly released from red blood cells cannot be dialysed away from the protein even after vigorous washing (48 h, running water). The amino-acids still released after such washing may come from (a) metabolism of bacterial contaminants, (b) cellular enzymes, (c) amino-acids secondarily ...
L J, Hastewell, R N, Priestland
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Free Amino Acids in Mammalian Tissue
Acta Physiologica Scandinavica, 1951Summary.1. Free amino acids in tissues form different groups. Some acids are present in high relative concentrations in blood serum as well as in all tissues investigated. Other acids are absent from blood serum but present in one or more of the tissues. Some acids are present in high relative concentrations in certain organs only.2.
T, ASTRUP, G, CARLSTROM, A, STAGE
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Free Amino Acids in Human Saliva
Journal of Dental Research, 1973By the use of thin layer chromatographic techniques and exchange column chromatography, 20 free amino acids were found in human saliva. No qualitative or semiquantitative differences in the amino acid content were observed among caries-susceptible and caries-resistant individuals 20 to 30 years old.
P H, Papanayotou +2 more
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Free radical-mediated oxidation of free amino acids and amino acid residues in proteins
Amino Acids, 2003We summarize here results of studies designed to elucidate basic mechanisms of reactive oxygen (ROS)-mediated oxidation of proteins and free amino acids. These studies have shown that oxidation of proteins can lead to hydroxylation of aromatic groups and aliphatic amino acid side chains, nitration of aromatic amino acid residues, nitrosylation of ...
E R, Stadtman, R L, Levine
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Intracellular ‘Free’ Amino-Acids
Nature, 1963Amino Acid Pools Distribution, Formation and Function of Free Amino Acids: Proceedings of a Symposium on Free Amino Acids held at the City of Hope Medical Center, Duarte, California, May 1961. Pp. xi + 815. Edited by Joseph T. Holden. (Amsterdam, London, New York: Elsevier Publishing Company, 1962.) 120s.
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