FIG. 1.

Graphical map of plasmid pSD15. The putative ORFs identified on pSD15 are indicated by arrows. ORFs related to agarases are red, those related to mobile elements are yellow, ORFs similar to noncharacterized proteins are purple, ORFs with no homologs in GenBank are green, and all other ORFs are dark blue. The ORFs are more fully described in Table 1. Also indicated on the map are the large inverted repeats, IR-I and IR-II, putative DnaA boxes, and the five iterons and an AT-rich region that may play a role in replication.