FIG. 1.

ORF and restriction analysis of cloned DNA containing the ceo genes identified in pCJ5 and pCJ6. The black-boxed regions with arrowheads represent the ORFs of interest. The gray-boxed region with an arrowhead indicates the incomplete ORF of ceoC in pCJ6. The small arrows under each ORF indicate the positions of the initiation codons for ceo ORFs. The abbreviations for the restriction enzymes are as follows: E, EcoRI; EV, EcoRV; H, HindIII; N, NheI; Na, NarI; Nd, NdeI; P, PvuII; S, SalI; Sa, SacII; Sm, SmaI; Sp, SphI; St, StyI; and X, XhoI.