Correction for Caranto and Lancaster, Nitric oxide is an obligate bacterial nitrification intermediate produced by hydroxylamine oxidoreductase

BIOCHEMISTRY Correction for “Nitric oxide is an obligate bacterial nitrification intermediate produced by hydroxylamine oxidoreductase,” by Jonathan D. Caranto and Kyle M. Lancaster, which was first published July 17, 2017; 10.1073/pnas.1704504114 (Proc Natl Acad Sci USA 114:8217–8222).

The authors note that on page 8221, left column, expression [3] should instead appear as:

$$2\hspace{0.17em}{\text{NH}}_2\text{OH}+\frac{3}{2}{\text{O}}_2\to 2\hspace{0.17em}\text{NO}+3\hspace{0.17em}{\text{H}}_2\text{O};{\mathrm{\Delta }\text{G}}^{°\prime }=-58.7\frac{\text{kcal}}{\text{mol}\hspace{0.17em}\text{N}}.$$

As a result, the preceding sentence, starting with “Furthermore,” should instead appear as, “We note that termination at NO allows for addition free energy to be withdraw via subsequent oxidation to NO₂^– by an as-yet-unidentified enzyme (vide infra).”