1.5.3.21	Metabolic pathways	-	01100	
1.5.3.21	Microbial metabolism in diverse environments	-	01120	
1.5.3.21	N-methylpyrrolidone degradation	-	-	
1.5.3.21	Nicotinate and nicotinamide metabolism	-	00760	
1.5.3.21	nicotine degradation I (pyridine pathway)	-	-