sp|B7GQ76|MURD_BIFLS UDP-N-acetylmuramoylalanine--D-glutamate ligase OS=Bifidobacterium longum subsp. infantis (strain ATCC 15697 / DSM 20088 / JCM 1222 / NCTC 11817 / S12) OX=391904 GN=murD PE=3 SV=1