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. 2008 Nov 25;9:555. doi: 10.1186/1471-2164-9-555

Table 1.

Conserved Coding (SPA gene) and Non-coding Sequences (CNS) identified between SPA-gA-gB-gD-gS at the 'SPA orthologous region'

Non coding 'SPA orthologous loci' sequences Coding 'SPA orthologous loci' sequences
B D S B D S

A A

CNS size (bp) 11 152 10 838 10 597 Nb of transitions 33 20 38

% Identity 85,9 87,9 86,8 Nb of transversions 22 10 23

Ks 0,874+- 0,036 1,037+-0,036 0,716+-0,024 Ratio 1,5 2 1,65

Ka 0,664+- 0,014 0,848+-0,015 0,57+-0,01 Ks 0,055+-0,015 0,042+-0,013 0,065+-0,016

Ks/Ka 1,3 1,2 1,3 Ka 0,042+-0,007 0,021+-0,005 0,049+-0,007

B MYA 6,2–10,8 4,5–8,5 7,5–12,5

CNS size (bp) 10 666 11 976 B

% Identity 85,8 89,9 Nb de transitions 35 25

Ks 0,991+-0,034 0,617+-0,026 Nb de transversions 20 19

Ka 0,797+-0,015 0,492+-0,012 Ratio 1,75 1,32

Ks/Ka 1,2 1,3 Ks 0,071+-0,017 0,035+-0,012

D Ka 0,039+-0,007 0,035+-0,006

CNS size (bp) 10 039 MYA 8,3–13,5 3,5–7,2

% Identity 85,3 D

Ks 0,902+-0,031 Nb de transitions 39

Ka 0,791+-0,014 Nb de transversions 23

Ks/Ka 1,1 Ratio 1,7

Ks 0,089+-0,019

Ka 0,043+-0,007

MYA 10,8–16,6

Non-coding 'SPA orthologous loci' sequences. Detailed features obtained for the 6 pairwised alignments of the 4 SPA orthologous regions excluding the SPA gene itself are mentioned with the CNS length, percentage of sequence identity, Ks and Ka values and rate. As an example, alignment of the gA and gB SPA orthologous regions of respectively 31 498 bp and 18 589 bp correspond to a cumulative CNS length of 11 152 bp with 85.9% of sequence identity and 0.874, 0.664, 1.3 values for respectively Ks, Ka and Ks/Ka.

Coding 'SPA orthologous loci' sequences. 6 pairwised comparisons of the SPA gene between A/B B/D D/A A/S B/S D/S sequences are associated with the number of substitutions, the number of transition, the number of transversion, the transition/transversion ratio, the Ks value, the Ka value and speciation date (MYA).