FIG. 2.

Relative transcription of selected cp32 genes. The solid black curve represents the relative mRNA levels for all B. burgdorferi genes plotted against the mRNA level rank of all the genes (Table 1 and supplementary Table 4). The portion of the curve delineated by the most highly expressed genes, which have expression levels up to 105 on this scale, is not shown; no cp32 genes lie in that portion of the curve. The expression levels for four different classes of cp32 genes are specifically shown: ▪,13 erp and bap genes; ○, 35 genes in the putative replication-partition region (bbp30 to bbp34 and their cp32 paralogs); □, 28 genes in the blyAB region (bbp23 to bbp26 and their cp32 paralogs); •, 168 putative virion morphogenetic region genes (bbp41, bbp42, and bbp01 through bbp22 and their cp32 paralogs). The open circles, filled squares, and open squares, which should lie on the black line, were artificially raised by values of 1, 2, and 3, respectively, on the vertical axis to enable the reader to distinguish the four categories of genes.