Utilfcation
1. synthesis of glutaminę (GOH)
2. synthesis of glutaminę (glutaminę synlhetasc)
3. synthesis of urea
Sourccs
1. transamination coupled with GDH
2. amino acid oxidases (peroxisomal) senne and threonine dehydratases
4. aminę oxidases (mitochondria)
5. glutaminę hydrolysis (glutaminases} intestinai and renal
6. glycine cleavage to NH*. C0> and
N!0-methylene tetrahydrofołate
7. purine and pyrimidine deamination
Ammonia metabolism