FIG. 3.

Map and nucleotide sequence of ybtQ gene from P. aeruginosa strain PA14. The deduced protein sequence is shown below the coding region of ybtQ. Numbering refers to the letter of the nucleotide sequence. The 196-bp of the RDA product recovered in pJY11 is underlined. The asterisks bracket the ABC transporter domain, and the four boxed regions are conserved motifs of the ABC transporter domain (Walker A, ABC signature, Walker B, and an unnamed fourth motif), as defined by Linton and Higgins (28).