# OC Root 2nd 3rd 4th PC Gene/Definition OC.642759 Archaea.13618 Euryarchaeota.10287 Methanohalophilus.252 mmh.1411 mmh:Mmah_1459 porphobilinogen synthase; K01698 porphobilinogen synthase [EC:4.2.1.24] OC.642759 Archaea.13618 Euryarchaeota.10287 Methanohalophilus.252 mhaz.1234 mhaz:BHR79_06385 delta-aminolevulinic acid dehydratase; K01698 porphobilinogen synthase [EC:4.2.1.24]