# OC Root 2nd 3rd PC Gene/Definition OC.229442 Bacteria.755306 Chloroflexi.18524 atm.2303 atm:ANT_23720 hisH; imidazole glycerol phosphate synthase subunit HisH; K02501 imidazole glycerol-phosphate synthase subunit HisH [EC:4.3.2.10]