# OC Root	2nd	3rd	4th	PC	Gene/Definition
OC.508379	Archaea.46627	Crenarchaeota.18550	Thermofilum.2248	thf.515	thf:MA03_02875   hypothetical protein; K07464 CRISPR-associated exonuclease Cas4 [EC:3.1.12.1]