The role of glutamine synthetase in protein catabolism is: (iii) the reaction catalyzed by glutamine synthetase removes excess nitrogen (in the form of toxic ammonia) from protein degradation.
Glutamine synthetase is an enzyme. It condenses glutamate and ammonia to form glutamine. It controls the use of nitrogen inside cells. The location of the enzyme in the body is: brain, kidneys, and liver.
Protein degradation is carried out by a process called ubiquitination where ubiquitin tags are added to the protein destined for degradation. The ubiquitin tags are not added randomly instead they are added to the amino group of the side chain of a lysine residue.
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