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urea cycle

   Also found in: Medical, Legal, Financial, Encyclopedia, Wikipedia 0.01 sec.
urea cycle
n
(Life Sciences & Allied Applications / Biochemistry) the sequence of metabolic reactions leading in vertebrates to the synthesis of urea


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The urea cycle consists of five reactions, and citrulline is formed in the second of these.
Researchers of the Center for Applied Medical Research (CIMA) of the University of Navarra have shown that the drug sodium phenylbutyrate, prescribed until now for patients with alterations in the urea cycle, eases the fusion of proteins responsible for neuron connections, thus increasing the learning capacity of the mice involved.
Well-known cycles in cell metabolism include the tricarboxylic acid and the urea cycle, in which a specific carrier substrate undergoes a sequence of chemical transformations and is regenerated at the end.
 
 
 
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