# OC Root 2nd 3rd 4th PC Gene/Definition OC.168885 Bacteria.52377 Firmicutes.6010 Firmicutes___Clostridia.46991 hsd.527 hsd:SD1D_0541 ddl2; D-alanine-D-alanine ligase; K18856 D-alanine---D-serine ligase [EC:6.3.2.35]