GABA is metabolized by the successive action of GABA transaminase (GABA-T) and succinic semialdehyde dehydrogenase (SSADH), to succinic acid, which is a substrate for the tricarboxylic acid cycle.

• GABA的降解主要由GABA转氨酶(GABA-T)催化,脱氨基生成琥珀酸半醛,再经琥珀酸半醛脱氢酶(SSADH)催化生成琥珀酸,进入三羧酸循环。