TSHZ1 and cystic fibrosis: In this study we identified a total of six operons coding for terminal oxidases in the genome of the opportunistic CF pathogen B. cenocepacia H111 and out of these six, three were heme-copper oxidases (cta, caa, cyo) and three bd-type oxidases (cyd, cio-1, cio-2) (Fig. 7a).