# OC Root	2nd	3rd	PC	Gene/Definition
OC.252500	Archaea.51278	Euryarchaeota.16584	mka.1420	mka:MK1537   hisI_2; Phosphoribosyl-AMP cyclohydrolase; K01496 phosphoribosyl-AMP cyclohydrolase [EC:3.5.4.19]