# OC Root 2nd 3rd 4th PC Gene/Definition OC.82038 Archaea.49709 Euryarchaeota.1559 Methanococcoides.2081 mbu.1789 mbu:Mbur_2003 bacterial Ig-like domain (group 1) containing protein OC.82038 Archaea.49709 Euryarchaeota.1559 - mpy.701 mpy:Mpsy_0721 Ig-like protein