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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Microbes Infect. 2011 May 12;13(10):808–817. doi: 10.1016/j.micinf.2011.04.008

Fig. 4.

Fig. 4

Genetic organization of the ybt locus and ybtD in Y. pestis. The ~29 kb ybt locus encoding 11 genes in four operons (promoters are designated by small arrows) lies within the 102-kb pgm locus. The monocystronic ybtD gene is located outside of the pgm locus. Arrows designating genes indicate the direction of transcription/translation. Red arrows indicate a biosynthetic function, green arrows are for uptake components, and the black checkered arrow denotes the potential secretion component YbtX. The transcriptional regulator YbtA is represented by a purple arrow. Protein masses and functions are indicated in the chart below the genetic maps. The processed and unprocessed masses are given for Psn which has a signal sequence.