# OC Root	2nd	3rd	PC	Gene/Definition
OC.255360	Archaea.36256	Thaumarchaeota.1342	csy.1780	csy:CENSYa_2043   phosphoribosyl-AMP cyclohydrolase/phosphoribosyl-ATP pyrophosphohydrolase; K01496 phosphoribosyl-AMP cyclohydrolase [EC:3.5.4.19]