# OC Root	2nd	3rd	PC	Gene/Definition
OC.20900	Archaea.1513	Euryarchaeota.38363	marc.1426	marc:AR505_1479   CoB--CoM heterodisulfide reductase subunit A HdrA; K03388 heterodisulfide reductase subunit A2 [EC:1.8.7.3 1.8.98.4 1.8.98.5 1.8.98.6]