Catalysis of the reaction: 2 NO + 2 O2 + NAD(P)H + H+ = 2 nitrate + NAD(P)+.
Comment:
Note that this activity is similar to nitric oxide dioxygenase activity, heme protein ; GO:0141118, but GO:0141118 uses a heme protein as the electron donor.
Synonyms:
broad_synonym:
nitric oxide dioxygenase activity
related_synonym:
NOD activity
xref:
EC:1.14.12.17; MetaCyc:R621-RXN; reactome:R-HSA-1222723 "Nitric oxide is oxidized to nitrate"