FIG. 1.

Linear presentation of pOR1. In the upper panel, the pOR1 sequence of 14,787 bp is indicated by the solid line. The ORFs of pOR1 are indicated by boxes. The ORFs on the direct strand are positioned above the sequence line, and those on the reverse strand are positioned below the sequence line. Dashed ORFs have orthologs in the EMBL/GenBank database. In the lower panel, the replication region of pOR1 is enlarged. Indicated are the four direct repeats of the iteron and their nucleotide sequences (a to d).