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Proteins enzymatic breakdown

The sinusoids transport both portal and arterial blood to the hepatocytes. The systemic blood delivered to the liver contains nutrients, drugs, and ingested toxins. The liver processes the nutrients (carbohydrates, proteins, lipids, vitamins, and minerals) for either immediate use or for storage, while the drugs and toxins are metabolized through a variety of processes known as first-pass metabolism. The liver also processes metabolic waste products for excretion. In cirrhosis, bilirubin (from the enzymatic breakdown of heme) can accumulate this causes jaundice (yellowing of the skin), scleral icterus (yellowing of the sclera), and tea-colored urine (urinary bilirubin excretion). [Pg.325]

Organophosphates are active not only against acetylcholinesterase but also serine proteases - which is obviously due to the shared catalytic mechanism. DFP is actually being used as a protease inhibitor in biotechnology. Another inhibitor that shares its mode of action but is less dangerous (because it is not volatile, and the enzyme adducts it forms are less stable) is PMSF (phenylmethylsulfone fluoride). You may have encountered it in one or the other research lab it is commonly added to crude cell extracts in order to minimize enzymatic breakdown of proteins during purification. [Pg.88]

In general, studies have shown a marked improvement in performance when extruded grains have been used in rations for young animals. This effect is a result of the somewhat undeveloped digestive tract of young animals as compared with the older animal. Improvements in gain and efficiency have also been noted for animals on high concentrated rations. The denaturization of enzyme inhibitors allows the normal enzymatic breakdown and use of proteins, fats, and carbohydrates. [Pg.2953]

The function of Jisper Uis fermentation appears to be primarily the breakdown of protein and polysaccharides by secreted proteases and amylases. Replacement oiPispergillis by chemical or enzymatic hydrolysis has no major impact on the organoleptic properties of the sauce. Likewise, inoculation with a pure culture of Ixictobacillus delbrueckii to carry out the acetic acid fermentation produces a normal product. The S. rouxii and Toru/opsis yeasts, however, are specifically required for proper flavor development. [Pg.393]

Dacarbazine is activated by photodecomposition (chemical breakdown caused by radiant energy) and by enzymatic N-demethylation. Formation of a methyl carbonium ion results in methylation of DNA and RNA and inhibition of nucleic acid and protein synthesis. Cells in all phases of the cell cycle are susceptible to dacarbazine. The drug is not appreciably protein bound, and it does not enter the central nervous system. [Pg.56]

The plant is known to contain chelerythrine chloride, which inhibits the aggregation of rabbit platelet in vitro via inhibition on thromboxane formation and phosphoinosi-tides breakdown (30). Chelerythrine, which occurs in members of the family Papaver-aceae, has been reported to inhibit the enzymatic activity of protein kinase C and to exert cell-growth inhibitory effect via the induction of apoptosis in numerous cancer cell lines (31,32). What is the topoisomerase activity of chelerythrine ... [Pg.191]


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Protein enzymatic

Proteins, breakdown

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