# OC Root 2nd 3rd 4th PC Gene/Definition OC.20677 Archaea.26524 Euryarchaeota.29530 - mla.1087 mla:Mlab_1112 sulfide dehydrogenase (flavoprotein) subunit SudA; K00266 glutamate synthase (NADPH) small chain [EC:1.4.1.13] OC.20677 Archaea.26524 Euryarchaeota.29530 Methanoculleus.1011 mem.1257 mem:Memar_1282 sulfide dehydrogenase (flavoprotein) subunit SudA; K00266 glutamate synthase (NADPH) small chain [EC:1.4.1.13] OC.20677 Archaea.26524 Euryarchaeota.29530 Methanoculleus.1011 mbg.1915 mbg:BN140_2021 gltD; glutamate synthase (NADPH/NADH) small chain; K00266 glutamate synthase (NADPH) small chain [EC:1.4.1.13] OC.20677 Archaea.26524 Euryarchaeota.29530 - mpl.1660 mpl:Mpal_1828 glutamate synthase (NADPH), homotetrameric; K00266 glutamate synthase (NADPH) small chain [EC:1.4.1.13]