Diheme Cyt<sup>c</sup> BV509\_14915

This transcript (log2fold change ~6, *p* < 0.0001) encodes a cyt*<sup>c</sup>* with two heme-binding motifs. BV509\_14915 is 347 residues long and contains a Sec signal peptide. Because of this, BLASTp analysis shows all 15 marine *Rhodovulum* spp. isolates contain a homolog of this di-heme cyt*c*. Given the high log2fold change, Sec signal peptide sequence, heme-binding motifs, and the presence of homologs within the other isolates' genomes, this cytochrome could be a conserved component of the pEEU molecular pathway in the *Rhodovulum* spp. isolates.
