FIG. 3.

Graphic representation of the star01 sequence structure. The end and beginning of the uvrA and hprK coding regions are indicated with an arrow and an arrowhead, respectively. The portion of the sequence containing the STAR element is marked. Grey boxes, directly repeated 14-bp signature sequence; black box, extended signature/end sequence; white rectangles, two copies of a 22-bp sequence, the second of which is the beginning of the element(s). The Tn557 attachment site (att) is marked. Black bars, inverted repeats, including the uvrA transcription terminator (t).