ID 1.6.3.4 DE NADH oxidase (H2O-forming). AN H2O-forming NADH oxidase. CA 2 H(+) + 2 NADH + O2 = 2 H2O + 2 NAD(+). CC -!- The bacterium Streptococcus mutans contains two distinct NADH CC oxidases, a H2O-forming enzyme and a H2O2-forming enzyme (cf. CC EC 1.6.3.3). DR Q97K92, FPRA1_CLOAB; Q97GC0, FPRA2_CLOAB; P37061, NAOX_ENTFA ; DR A2RIB7, NAOX_LACLM ; Q58065, NAOX_METJA ; Q49408, NAOX_MYCGE ; DR P75389, NAOX_MYCPN ; O84925, NAOX_STREE ; Q5XC60, NAOX_STRP6 ; DR A0A0H2UQZ4, NAOX_STRPN ; Q8DP70, NAOX_STRR6 ; //