ID   7.1.1.5
DE   menaquinol oxidase (H(+)-transporting).
AN   cytochrome aa3-600 oxidase.
AN   cytochrome bd oxidase.
CA   2 a menaquinol + n H(+)(in) + O2 = 2 a menaquinone + n H(+)(out) +
CA   2 H2O(in).
CC   -!- Cytochrome aa3-600, one of the principal respiratory oxidases from
CC       Bacillus subtilis, is a member of the heme-copper superfamily of
CC       oxygen reductases, and is a close homolog of the cytochrome bo3
CC       ubiquinol oxidase from Escherichia coli, but uses menaquinol instead
CC       of ubiquinol as a substrate.
CC   -!- The enzyme also pumps protons across the membrane bilayer, generating
CC       a proton motive force.
CC   -!- Formerly EC 1.10.3.12.
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