Results 261 to 270 of about 1,017,471 (305)

Amino Acid Composition Determination

1970
The pioneering studies of Emil Fischer [301] at the turn of the century established the role of amino acids and the peptide bond in the composition and chemistry of proteins. In the light of contemporary techniques, his methods of protein degradation and subsequent fractionation of the products appear cumbersome and of historical interest only.
J W, Eveleigh, G D, Winter
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Carp Connectin: Amino Acid Composition

The Journal of Biochemistry, 1978
An elastic protein, connectin, was prepared from carp skeletal muscle by the alkaline method with some modifications; collagen contaminations were exhaustively extracted with 1 N acetic acid and hot phenol treatment was omitted. This connectin preparation contained a considerable amount of tryptophan, but almost completely lacked hydroxyproline.
S, Kimura, Y, Akashi, M, Kubota
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Determining Amino Acid Composition

Nature Biotechnology, 1993
A New Pre-Column Derivatization Chemistry Simplifies the Production of Amino Acid ...
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Amino acid compositions of pleistocene collagens

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1975
Abstract 1. 1. Incubation studies reveal marked differences of amino acid compositions in Pleistocene deer antler. 2. 2. A decrease in the degradation rate of fossil collagen with time is apparent. After substantial degradation a remnant collagen is produced whose composition may reflect the thermal stabilities of its constituent molecules.
G, Dungworth, J A, Th Vrenken, A W, Schwartz   +2 more
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Amino acid composition of gluten fractions

Canadian Journal of Biochemistry, 1969
Gluten dispersions in 10% sodium salicylate were fractionated by precipitation with increasing concentrations of magnesium sulfate. Dialysis of the dispersion against the dispersing agent to which sodium bisulfite had been added served merely to sharpen the separation of the fractions.
H J, Yang, A G, McCalla
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Amino-acid Composition of Prekeratin

Nature, 1964
IN a previous communication1 a new isolation technique was described by which pure prekeratin can be obtained from the epidermis of the cow's nose. For the extraction of the epidermis 0.1 M citric acid–sodium citrate buffer of pH 2.6 and ionic strength of 0.6 was used and prekeratin was isolated from the epidermal extract by serial precipitations in ...
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Amino‐acid composition of maturing wheat

Journal of the Science of Food and Agriculture, 1966
AbstractAmino‐acids were determined in hydrolysates of two wheat varieties harvested at various stages of maturity, and in flours milled from the wheat samples. During maturation, the concentration in protein of lysine, aspartic acid, glycine. alanine and valine decreased; and concentrations of glutamic acid and proline increased. Milling of wheat into
Y, Pomeranz, K F, Finney, R C, Hoseney
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Amino-acid Composition of Crayfish Trypsin

Nature, 1970
THE homology in primary structure of mammalian pancreatic serine proteases is well established1,2. Progress has now been made in the elucidation of the evolutionary history of this group of proteases. Neurath and his co-workers3 studied the amino-acid composition of trypsinogen isolated from the pancreas of the spiny Pacific dogfish and presented a ...
R, Zwilling, V, Tomásek
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Amino acid composition of salmon calcitonin

Canadian Journal of Biochemistry, 1969
Calcitonin has been extracted from salmon ultimobranchial glands and purified. The amino acid composition indicates similarities to mammalian calcitonin but the salmon hormone has 25 times the biological activity of the most active mammalian material.
R K, O'Dor, C O, Parkes, D H, Copp
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Amino acid composition of bovine ‘proinsulin’

Biochemical and Biophysical Research Communications, 1967
Abstract The structure of insulin being composed of two polypeptide chains and the differentiation of the endocrine and the exocrine pancreas from the same embryonic cell type have made the existence of a ‘proinsulin’ in the endocrine pancreas an attractive hypothesis to a number of investigators Givol et al. 1965.
C C, Yip, B J, Lin
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