sp|A0AMA3|GSHAB_LISW6 Glutathione biosynthesis bifunctional protein GshAB OS=Listeria welshimeri serovar 6b (strain ATCC 35897 / DSM 20650 / CIP 8149 / NCTC 11857 / SLCC 5334 / V8) OX=386043 GN=gshAB PE=3 SV=1