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The Incorporation of Glycerol and Lysine into the Lipid Fraction of
The Incorporation of Glycerol and Lysine into the Lipid Fraction of

... Using similar fractionation procedures with the same organism, Macfarlane (1962a,b) found that fraction A consisted of neutral lipid and that fractions C and D contained phosphatidylglycerol and its amino acid esters; small amounts of glycolipid were present in fractions B and C. These findings were ...
Glycolysis and Gluconeogenesis - University of San Diego Home
Glycolysis and Gluconeogenesis - University of San Diego Home

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Deficient Saccharomyces cerevisiae and on the

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Myoglobin from equine skeletal muscle (M0630)

... helical regions, joined by non-ordered or random coil regions. These 8 helices (A, B, C, D, E, F, G, H) are folded back on top of one another, and the heme is situated between helices E and F. The heme is almost totally buried. Only the edge carrying the two hydrophylic propionic acid groups is expo ...
pam&blosum
pam&blosum

... figure 3.2), there are 6 AA pairs, 4 AB pairs, 4 AC, and one BC. The probability qi,j for a pair of amino acids in the same column to be Ai and Aj is calculated, as well as the probability pi of a certain amino acid to be Ai. In the third stage the log odd ratio is calculated. As final result we con ...
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03-232 Biochemistry Exam III - S2014 Name:________________________
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... in a cell called a sideroblast. A siderocyte is a red blood cell (anucleated) with excess iron Proper globin synthesis depends on genes. The precise order of amino acids in the globin chains is critical to the structure and function of hemoglobin. (More discussion to follow in another section.)  Ch ...
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Antioxidant activity of anacardic acids Food Chemistry

... superoxide anion, generated by the enzyme, reduces yellow nitroblue tetrazolium to blue formazan. Hence, superoxide anion can be detected by measuring the absorbance of formazan produced at 560 nm. At the concentration of 30 lg/ml, anacardic acid (C15:3) (88 lM), inhibited this formazan formation by ...
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Amino acid synthesis

Amino acid synthesis is the set of biochemical processes (metabolic pathways) by which the various amino acids are produced from other compounds. The substrates for these processes are various compounds in the organism's diet or growth media. Not all organisms are able to synthesise all amino acids. Humans are excellent example of this, since humans can only synthesise 11 of the 20 standard amino acids (aka non-essential amino acid), and in time of accelerated growth, arginine, can be considered an essential amino acid.A fundamental problem for biological systems is to obtain nitrogen in an easily usable form. This problem is solved by certain microorganisms capable of reducing the inert N≡N molecule (nitrogen gas) to two molecules of ammonia in one of the most remarkable reactions in biochemistry. Ammonia is the source of nitrogen for all the amino acids. The carbon backbones come from the glycolytic pathway, the pentose phosphate pathway, or the citric acid cycle.In amino acid production, one encounters an important problem in biosynthesis, namely stereochemical control. Because all amino acids except glycine are chiral, biosynthetic pathways must generate the correct isomer with high fidelity. In each of the 19 pathways for the generation of chiral amino acids, the stereochemistry at the α-carbon atom is established by a transamination reaction that involves pyridoxal phosphate. Almost all the transaminases that catalyze these reactions descend from a common ancestor, illustrating once again that effective solutions to biochemical problems are retained throughout evolution.Biosynthetic pathways are often highly regulated such that building-blocks are synthesized only when supplies are low. Very often, a high concentration of the final product of a pathway inhibits the activity of enzymes that function early in the pathway. Often present are allosteric enzymes capable of sensing and responding to concentrations of regulatory species. These enzymes are similar in functional properties to aspartate transcarbamoylase and its regulators. Feedback and allosteric mechanisms ensure that all twenty amino acids are maintained in sufficient amounts for protein synthesis and other processes.
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