FIG. 2.

Nucleotide (nt) sequence of the promoter-regulatory region of the xylPQR operon. Open boxes, −10 and −35 elements of the promoter; boldface italic letters, putative regulatory elements (cre and xylO); stars, potential ribosome binding site; open vertical arrow, +1 transcription start; horizontal arrow, sequence complementary to the primer xylp5 used in the primer extension experiment. The beginning of the deduced amino acid sequence of the xylP gene is depicted below the nucleotide sequence. Direct repeated or inverted repeated sequences in the promoter region are underlined with arrows.