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. Author manuscript; available in PMC: 2009 Jan 1.
Published in final edited form as: Microb Pathog. 2007 Aug 12;44(1):52–60. doi: 10.1016/j.micpath.2007.08.004

Fig. 4.

Fig. 4

Genetic maps of the pgaABCD gene clusters in wild-type and mutant A. actinomycetemcomitans strains. (A) Map of pgaABCD in strain CU1000. Horizontal arrows indicate open reading frames and direction of transcription. Vertical arrows indicate the insertion sites of transposon IS903φkan in 13 mutant strains. All 13 transposons inserted in the same transcriptional orientation as the pga genes. (B) Map of pgaABCD and flanking genes in strain IDH781 and three deletion mutants. In each mutant, the deleted region was replaced by a 879 bp spectinomycin-resistance gene that was transcribed in the same orientation as the pga genes.