locus-tag	class	description
Y_15	GO:0008745	N-acetylmuramoyl-L-alanine amidase activity
Y_15	GO:0009253	peptidoglycan catabolic process
Y_40	GO:0009279	cell outer membrane
Y_40	GO:0016837	carbon-oxygen lyase activity, acting on polysaccharides
Y_40	GO:0008933	lytic transglycosylase activity
Y_40	GO:0016998	cell wall macromolecule catabolic process
Y_40	GO:0071555	cell wall organization
Y_40	GO:0000270	peptidoglycan metabolic process