Table 1.

Bacterial strains and plasmids used in this work.

Name	Description	Source
MC1000	araD139, Δ(ara, leu)7697, ΔlacX74, galU, galK, strA	[45]
MC1000 (ΔdsbA)	MC1000 ΔdsbA::kan	Lab stock
MC1000 (ΔdsbD)	MC1000 ΔdsbD	[46]
MC1000 (ΔdsbA/ΔdsbD)	MC1000 ΔdsbA::kan, ΔdsbD	Lab stock
pEC86	E. coli ccmABCDEFGH, CamR	[29]
pRZ001	P. denitrificans cytochrome cd1, GentR	Lab stock
pKPD1	P. denitrificans c550, AmpR	[47]