NADH-ubiquinone oxidoreductase-related. Identical to NADH dehydrogenase [ubiquinone] iron-sulfur protein 6 [Arabidopsis Thaliana] (GB:Q9M9B4); similar to NADH-ubiquinone oxidoreductase-related [Arabidopsis thaliana] (TAIR:AT1G49140.1); similar to unknown [Populus trichocarpa] (GB:ABK93904.1)