# OC Root	2nd	3rd	PC	Gene/Definition
OC.252498	Archaea.33267	Euryarchaeota.38633	mear.250	mear:Mpt1_c02360   hisI; phosphoribosyl-AMP cyclohydrolase; K11755 phosphoribosyl-ATP pyrophosphohydrolase / phosphoribosyl-AMP cyclohydrolase [EC:3.6.1.31 3.5.4.19]