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HMG CoA reductase
HMG CoA reductase

... of the steroid hormones, bile acids & Vitamin D3 Both dietary cholesterol and that synthesized de novo are transported through the circulation in lipoprotein particles. ...
Biochemical and Molecular Characterization of a
Biochemical and Molecular Characterization of a

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Marine Biotechnology
Marine Biotechnology

... enzyme synthesis in crustaceans. Several species of lobster from the west coast of the Baja California Peninsula have both ecological and economic interest. Panulirus interruptus is one of the most important fisheries of the regional economy. This study describes the first known work on the protease ...
Fatty Acid Oxid - Univerzita Karlova v Praze
Fatty Acid Oxid - Univerzita Karlova v Praze

... Elongation beyond the 16-C length of the palmitate product of Fatty Acid Synthase occurs in mitochondria and endoplasmic reticulum (ER).  Fatty acid elongation within mitochondria involves the b-oxidation pathway running in reverse, but NADPH serves as electron donor for the final reduction step. ...
Chapter 4 - Open Science Online
Chapter 4 - Open Science Online

... phosphorylation of glucose. This leads to hyperglycemia and metabolic syndrome X. The glucose that accumulates gets converted to fructose producing the syndrome of fructositis. Fructose has got two metabolic fates. The fructose can get phosphorylated to fructose phosphate and enter the pentose phosp ...
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Review of Analytical Methods Part 1: Spectrophotometry

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The expression of a chromoplast-specific lycopene beta cyclase
The expression of a chromoplast-specific lycopene beta cyclase

... 106 | Ahrazem et al. Solanum lycopersicum (Giuliano et al., 1993; Fraser et al., 1994; Ronen et al., 1999; Isaacson et al., 2002), Capsicum annuum (Romer et al., 1993), Nicotiana tabacum (Busch et al., 2002), and in an alga (Steinbrenner and Linden, 2001). These studies have demonstrated that carot ...
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March 1972 EFFECTS OF VOLATILE FA`M`Y ACIDS, KETONE

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Structural and Biochemical Characterization of a Bifunctional

... ABSTRACT: Unusual N-acetylated sugars have been observed on the O-antigens of some Gram-negative bacteria and on the S-layers of both Gram-positive and Gram-negative bacteria. One such sugar is 3-acetamido-3,6-dideoxy-α-D-galactose or Fuc3NAc. The pathway for its production requires five enzymes with ...
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Computational Studies on Conformations and Properties of Peptide

... Na+, Rb+ and Mg2+ coordinated dipeptide arginylglycine (ArgGly). Our results show that the salt-bridge (SB) form is more stable for the sodium-cationized and rubidium-cationized dipeptides, but the charge-solvated (CS) form is more stable for magnesium-cationized dipeptide. The metal ion affinities ...
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Protease Inhibitors - laboratornichemikalie.cz

... Proteases (also termed proteinase or peptidase) catalyze the hydrolysis of peptide bonds. Exopeptidases remove amino acids from the C- or N-terminus, whereas endopeptidases are capable of cleaving peptides within the molecule. Proteolytic enzyme activity largely depends on the active center of the e ...
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Chapter 1: An Introduction to Chemistry

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PBI 6 Features on Teacher`s Map 2-08.qxp

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Enzymes - Exercise 3 - Science Learning Center

... control; do not add enzyme to this tube. • 13. Using a fresh tip, add 100uL of enzyme to each of the remaining tubes, letting the tip touch the side of the rest tube as your dispense. • 14. Collect DNS reagent from your instructor if you have not done so. Set to appropriate 1,000uL (1mL), and add a ...
The risks and benefits of feeding intact male swine in the United
The risks and benefits of feeding intact male swine in the United

... that each gender needs daily to allow it to fully express this capacity; assess average daily feed intake on the farm; and then formulate the optimal ration for each age and gender of pig to ensure they achieve their biological capacity for lean growth. ...
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Fatty acid productivity of Scenedesmus obliquus under nitrogen

... Time (days) 4th ...
Lipase Specificity and Selectivity
Lipase Specificity and Selectivity

... the reaction specificity could be shown by the following example: three different enzymes,  ...
Carbohydrate Metabolism in Rhizobium trifolii
Carbohydrate Metabolism in Rhizobium trifolii

... Galactose may be catabolized via a different pathway, possibly involving an NADP+-linked galactose dehydrogenase. Pyruvate carboxylase was an important anaplerotic enzyme in R. trifolii required for growth on all carbon sources tested, except succinate. All the mutants, including a glk fup double mu ...
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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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