1.2.1.41	glutamate-5-semialdehyde dehydrogenase	L-Ndelta-acetylornithine biosynthesis	-	-	
1.5.5.2	proline dehydrogenase	L-Ndelta-acetylornithine biosynthesis	-	-	
2.6.1.13	ornithine aminotransferase	L-Ndelta-acetylornithine biosynthesis	-	-	
2.7.2.11	glutamate 5-kinase	L-Ndelta-acetylornithine biosynthesis	-	-	
3.5.3.1	arginase	L-Ndelta-acetylornithine biosynthesis	-	-