Figure 2 : Circular genome map comparing Vibrio cholerae non-O1 PS15 with O1 V. cholerae N16961.

BLAST was performed on the DNA sequence of the V. cholerae non-O1 PS15 (3,910,387 base pairs) with V. cholerae El Tor N16961
(4,033,460 base pairs) using CGView server to yield a structural representation of both genomes. The FASTA sequences of the genomes
were used to generate the graphical circular genome map, and the Global Blast Settings or parameters selected were as follows: query
split size=50,000, and overlap split size=0; Blast 1: non-O1 V. cholerae PS15, and blastn expect=0.1. The outermost circle in blue
represents the entire genome of non-O1 V. cholerae PS15, and PS15 gaps in the genome alignment are indicated in white. In the next
inner circle, the red and yellow color coded regions represent chromosomes 1 and 2, respectively, of V. cholerae N16961. The third inner
circle in pink shows matching nucleotide base pairs representing the BLAST analysis for V. cholerae N16961 and V. cholerae PS15. The
fourth inner circle represents the total G+C content color coded in black. In the fifth inner circle, the region in green represents the G+C
content of the forward strand, and the region in purple represents the G+C content of the reverse strand. The innermost circle represents
the base pair numbers, where kbp stands for kilo base pairs.

Varela et al.Genomics Discovery  2014 2:1DOI : 10.7243/2052-7993-2-1