# OC Root 2nd 3rd 4th PC Gene/Definition OC.504714 Archaea.19797 Euryarchaeota.20336 Natrinema.3904 nat.3487 nat:NJ7G_3615 exsB protein; K06920 7-cyano-7-deazaguanine synthase [EC:6.3.4.20] OC.504714 Archaea.19797 Euryarchaeota.20336 Natrinema.5418 npe.2717 npe:Natpe_2894 queuosine biosynthesis protein QueC; K06920 7-cyano-7-deazaguanine synthase [EC:6.3.4.20]