1.5.1.2	pyrroline-5-carboxylate reductase	L-arginine degradation VI (arginase 2 pathway)	
2.6.1.13	ornithine aminotransferase	L-arginine degradation VI (arginase 2 pathway)	
3.5.3.1	arginase	L-arginine degradation VI (arginase 2 pathway)