Skip to main content
Figure 1 | BMC Evolutionary Biology

Figure 1

From: Interference with histidyl-tRNA synthetase by a CRISPR spacer sequence as a factor in the evolution of Pelobacter carbinolicus

Figure 1

The CRISPR locus of P. carbinolicus. This locus consists of 112 repeats (black diamonds) separated by 111 nonrepetitive spacers (white rectangles). Spacer #1 is at the trailer end, farthest from the cas genes and the AT-rich leader sequence near which new spacers are typically inserted. Primers MA0326 and MA0327 are based on sequences surrounding spacer #1, and were used to detect its RNA transcript. The arrangement of the cas genes (located immediately to the left of the leader sequence) is illustrated in the lower half of the figure. The two intervening genes encode a putative toxin (Pcar_0962) and transcriptional regulator or antitoxin (Pcar_0963).

Back to article page