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Biology-Related Homework Help Biochemistry Topic started by: firestorm on Sep 26, 2012



Title: What happens during protein catabolism? How is this related to nitrogen balance?
Post by: firestorm on Sep 26, 2012
What happens during protein catabolism? How is this related to nitrogen balance?


Title: What happens during protein catabolism? How is this related to nitrogen balance?
Post by: firetruckboom on Sep 26, 2012
During protein catabolism, the proteins are first broken down into amino acids by the various proteases.  The amino acids are then absorbed by the small intestine, from which they are sent to the liver via the hepatic portal vein.  In the liver, the amino acids are deaminated, and the amino groups are combined into urea, CO(H2N)2.  Nitrogen balance is important,  since most nitrogenous compounds are cytotoxic.