Figure 1. Most metagenomic reads from a Lost City carbonate chimney have moderate sequence similarity with Thiomicrospira crunogena XCL-2.

Shotgun reads with >500 bp BLASTN alignments with the T. crunogena genome are binned according to the nucleotide sequence similarity (x-axis) of the BLASTN alignments. The y-axis represents the T. crunogena coverage for the reads in each bin where coverage corresponds to the ratio of the total number of aligned base pairs in each bin to the total number of base pairs in the T. crunogena genome, as in Figure 2 of [31].