# OC Root 2nd 3rd 4th PC Gene/Definition OC.168855 Bacteria.52366 Proteobacteria.231326 Gammaproteobacteria.9880 rhd.3053 rhd:R2APBS1_3267 D-alanine--D-alanine ligase; K01921 D-alanine-D-alanine ligase [EC:6.3.2.4]