Urea occurs in liver of the coelacanth Latimeria chalumnae to the extent of about 1.7 percent by weight. It was determined quantitative- ly by reaction with 1-phenyl-1,2-pro- panedione-2-oxime (Archibald reagent) and by measurement of ammonia re- leased upon treatment with grease. Ar- ...
Urea is a relatively non-toxic organic compound that aids in the breakdown of nitrogen-containing compounds and potentially toxic metabolic byproducts. Urea is produced in the liver through the Urea Cycle, which occurs in both themitochondriaand cytoplasm of liver cells. Our bodies are incredible m...
The urea cycle In mammalian organisms, the ammonia produced by amino acid degradation is detoxified by conversion to urea in the liver. The metabolic pathway by which this occurs was elucidated by Krebs in 1935. Each molecule of urea contains the equivalent of two molecules of ammonia, one of...
Urea is the chief nitrogenous end product of the metabolic breakdown of proteins in all mammals and some fishes. The material occurs not only in the urine of all mammals but also in their blood, bile, milk, and perspiration. In the course of the breakdown of proteins, amino groups (NH2)...
TheUreaCycle：尿素循环 The Urea Cycle April 11, 2003 Bryant Miles I. Ammonia Toxicity Every amino acid contains at least one amino group. Therefore every amino acid degradation pathway has a key step where the amino group is removed. In short amino acid catabolism generates ammonia. Brain ...
The resulting activity of the isocyanic acid ions do result in carbamylation (formation of long-chain carbamides, liberating ammonia molecule as byproduct) of proteins if proteins are present in the solution too. The carbamylation reaction may occurs at elevated temperatures even without catalysts. ...
urea cycle 點擊卡片即可翻轉 👆 primary mechanism for clearing waste nitrogen and converting ammonia to urea, ammonia is toxic, primarily occurs in liver 點擊卡片即可翻轉 👆 建立者 fergussonm 5個月前建立 學生們也學習了 單詞卡學習集 學習指南 ...
Urea-cycle disorders (UCDs) are a group of inborn errors of hepatocyte metabolism that are caused by the loss of enzymes involved in the process of transferring nitrogen from ammonia to urea, via the urea cycle (UC). From: Trends in Molecular Medicine, 2002 ...
Regulation of enzymes of the urea cycle and arginine metabolism present in the urea cycle occurs also in many other tissues, where these enzymes are involved in synthesis of nitric oxide, polyamines, proline and ... SM Morris - 《Annual Review of Nutrition》 被引量: 1272发表: 2002年 ...
The urea cycle is a series of biochemical reactions which occurs in many animals that produce urea ((NH2)2CO) from ammonia (NH3) and, in mammals, takes place only in the liver. Specifically, the urea cycle consists of a series of five biochemical reactions and serves two primary functions...