# OC Root 2nd 3rd 4th PC Gene/Definition OC.335310 Archaea.16437 Euryarchaeota.15589 Halodesulfurarchaeum.1276 halh.38 halh:HTSR_0034 3-hydroxy-3-methylglutaryl-coenzyme A reductase; K00054 hydroxymethylglutaryl-CoA reductase [EC:1.1.1.88] OC.335310 Archaea.16437 Euryarchaeota.15589 Halodesulfurarchaeum.1276 hhsr.40 hhsr:HSR6_0034 hmgA; 3-hydroxy-3-methylglutaryl-coenzyme A reductase; K00054 hydroxymethylglutaryl-CoA reductase [EC:1.1.1.88] OC.335310 Archaea.16437 Euryarchaeota.15589 Halanaeroarchaeum.1509 hsu.41 hsu:HLASF_0036 mvaA; 3-hydroxy-3-methylglutaryl-coenzyme A reductase; K00054 hydroxymethylglutaryl-CoA reductase [EC:1.1.1.88] OC.335310 Archaea.16437 Euryarchaeota.15589 Halanaeroarchaeum.1509 hsf.37 hsf:HLASA_0036 mvaA; 3-hydroxy-3-methylglutaryl-coenzyme A reductase; K00054 hydroxymethylglutaryl-CoA reductase [EC:1.1.1.88]