含氮化合物代谢
1.蛋白酶(Proteinase)
2.肽酶(Peptidase)
3.氮平衡(Nitrogen balance)
4.生物固氮(Biological nitrogen fixation)
5.硝酸还原作用(Nitrate reduction)
6.氨的同化(Incorporation of ammonium ions into organic molecules)
7.转氨作用(Transamination)
8.尿素循环(Urea cycle)
9.生糖氨基酸(Glucogenic amino acid)
10.生酮氨基酸(Ketogenic amino acid)
11.核酸酶(Nuclease)
12.限制性核酸内切酶(Restriction endonuclease)
13.氨基蝶呤(Aminopterin)
14.一碳单位(One carbon unit)