▁is ▁capable ▁of ▁an a er ob ic ▁resp iration ▁under ▁an ox ic ▁conditions . ▁Rec ently ▁an ▁isol ate ▁of ▁this ▁species ▁was ▁studied ▁by ▁research ers ▁at ▁University ▁of ▁California , ▁Ber keley , ▁as ▁part ▁of ▁a ▁project ▁on ▁the ▁surv ival ▁of ▁h alo arch ae a ▁on ▁Mars . ▁ ▁Gen ome ▁structure ▁ ▁The ▁gen ome ▁of ▁H . ▁vol can ii ▁consists ▁of ▁a ▁large ▁( 4 ▁M b ), ▁mult ic opy ▁chrom os ome ▁and ▁several ▁meg ap las m ids . ▁The ▁complete ▁gen ome , ▁D S 2 , ▁of ▁H . ▁vol can ii ▁consists ▁of ▁about ▁ 4 1 3 0 ▁gen es . ▁ ▁The ▁gen ome ▁has ▁been ▁completely ▁sequ enced ▁and ▁a ▁paper ▁discuss ing ▁it ▁was ▁published ▁in ▁ 2 0 1 0 . ▁The ▁mole cular ▁bi ology ▁of ▁H . ▁vol can ii ▁has ▁been ▁extens ively ▁studied ▁for ▁the ▁last ▁de cade ▁in ▁order ▁to ▁discover ▁more ▁about ▁DNA ▁rep lication , ▁DNA ▁repair ▁and ▁R NA ▁synth esis . ▁The ▁arch ae al ▁prote ins ▁used ▁in ▁these ▁processes ▁are ▁extremely ▁similar ▁to ▁E uk ary otic ▁prote ins ▁and ▁so ▁are ▁studied ▁primarily ▁as ▁a ▁model ▁system ▁for ▁these ▁organ isms . ▁H . ▁vol can ii ▁under go es ▁pro l ific ▁horizontal ▁gene ▁transfer ▁through ▁a ▁mechanism ▁of ▁" m ating " - ▁cell ▁fusion . ▁ ▁Cell ▁structure ▁and ▁met abol ism ▁ ▁Re production ▁among ▁H