Schematic representation of the Tuc2009 genome showing putative ORFs, depicted as arrows, to which functions have been assigned. The direction of the arrow is the same as the direction of the ORF. cI, repressor; mp1 and mp2, major structural proteins. The enlarged section represents all identified ORFs contained within the pSK220 subclone. SSB, putative single-stranded-DNA-binding protein; Rep, putative replisome organizer (Rep2009); Meth′, putative methylase; Topo′, putative topoisomerase I.