Table 1. Percent Conservation of Genes in Putative Nat-Containing Operon in M. tuberculosis H37Rv.

Rv3566a corresponds to a pseudogene, Rv3567c is thought to be hsaB and Rv3570c is thought to be hsaA¹. N/A = not applicable for comparison as sequence is not present. Bioinformatic resources were as follows: [http://genolist.pasteur.fr/TubercuList/] and [http://www.tigr.org] and [http://www.sanger.ac.uk/Projects/M_bovis/]

Organisms Analysed	Percent Conservation with M. tuberculosis H37Rv (%)
	Rv3566c (nat)	Rv3566a	Rv3567c	Rv3568c(hsaC)	Rv3569c (hsaD)	Rv3570c
M. tuberculosis CDC1551	100	100	100	100	100	100
M. tuberculosis Haarlem	100	100	100	100	100	100
M. tuberculosis F11	100	N/A	100	100	100	100
M. tuberculosis C	100	N/A	98	100	100	99
M. bovis BCG Pasteur	100	100	99.5	100	100	99.7
M. bovis AF2122/97	100	98.9	99	99.7	100	99.5
M. marinum M	75.4	N/A	90.5	90.7	89.9	90.9
M. ulcerans Agy99	75.8	N/A	89.9	90.7	89.5	90.6
M. avium K-10	67	N/A	88	89	89	90.6
M. avium str. 104	68	N/A	88	89	89	90.6
M. MCS	61	N/A	86	85	79	82
M. KMS	61	N/A	86	85	79	82
M. JLS	61	N/A	86	85	79	82
M. smegmatis mc2 155	60	N/A	81	82	80	81
M. vanbaalenii PYR-1	59	N/A	82	82	77	81
M. gilvum PYR-GCK	60	N/A	82	82	77	81
Rhodococcus RHA1	43	N/A	74	81	75	78

¹After [26].