title: Tetrapyrrole biosynthesis: N-methyl-N'-nitrosoguanidine-induced mutants of Propionibacterium shermanii.
mesh_terms: D002374:Catalase / Q000378:metabolism; D005821:Genetic Techniques; D008769:Methylnitronitrosoguanidine / Q000494:pharmacology*; D009154:Mutation; D011424:Propionibacterium / Q000201:enzymology / Q000302:isolation & purification*
chemical_list: D008769:Methylnitronitrosoguanidine; D002374:Catalase