TABLE 1.
MTC species | PCR-targeted locus [no. in profile]b
|
||||||||
---|---|---|---|---|---|---|---|---|---|
16S rRNAc [1] | cfp32 (Rv0577) [2] | MiD3 (IS1561′) [3] | RD4 (Rv1510) [4] | RD7 (Rv1970) [5] | RD1 (Rv3877 to Rv3878) [6] | RD9d (Rv2073c) [7] | RD12 (Rv3120) [8] | General profilee | |
“M. canettii” (n = 5) | + | + | + | + | + | + | + | −f | 1234567• |
“Ancestral” M. tuberculosis [PGG1b] (n = 6) | + | + | + | + | +g | + | + | + | 12345678 |
“Modern” M. tuberculosis (PGG1b) (n = 14) | + | + | + | + | + | +h | + | + | 12345678 |
“Modern” M. tuberculosis (PGG2) (n = 19)i | + | + | +j | + | + | +k | + | + | 12345678 |
“Modern” M. tuberculosis (PGG3) (n = 5) | + | + | + | + | + | + | + | + | 12345678 |
M. africanum subtype Ib (n = 12) | + | +l | + | + | + | + | −m | + | 123456•8 |
M. africanum subtype Ia (n = 18) | + | + | + | + | − | + | − | + | 1234•6•8 |
Dassie bacillus (n = 4) | + | + | + | + | − | −n | − | + | 1234•••8 |
Oryx bacillus (n = 2) | + | + | + | + | − | + | − | + | 1234•6•8 |
M. microti (n = 10) | + | + | −o | + | − | + | − | + | 12•4•6•8 |
M. pinnipedii (n = 7) | + | + | −o | + | − | + | − | + | 12•4•6•8 |
M. caprae (n = 1) | + | + | + | + | − | + | − | − | 1234•6•• |
M. bovis (n = 14) | + | + | + | − | − | + | − | − | 123••6•• |
M. bovis BCG (n = 8) | + | + | + | − | − | −o | − | − | 123••••• |
Includes strains previously described (38) as well as strains evaluated herein for the first time.
Based upon the presence of (+) or a failure to amplify (−) a PCR fragment of the expected size; confirmatory PCR amplification of secondary targets from all strains (n = 125) was also performed as previously described for the loci MiD3, RD4, RD1, and RD9 (38), and the results were coincident with those of the primary targets (data not shown).
In addition to this gene, all MTC strains (n = 125) also amplified for the genetic elements hsp65, rpoB, IS1081, mpb70, gyrA, gyrB, katG, oxyR′, pncA, and Rv0911.
The locus introduced to expand the MTC PCR typing panel (38).
Based upon the presence or absence of a PCR fragment for each numerically assigned locus; not included are the isolates with independent overlapping strain-specific LSPs.
As a result of RDcan.
As an exception, M. tuberculosis strain CA-74 failed to amplify; resulting profile, 1234•678.
An alternate RD1 target amplicon (Rv3879c; 1,000 bp) was truncated by 57 bp (943 bp) in M. tuberculosis strains 97-803, 97-1177, and 97-1438.
Includes Uganda genotype M. tuberculosis strains (n = 4).
As exceptions, M. tuberculosis strains 94-1055, 2002-1330, 2002-1384, and Percy47 failed to amplify; resulting profile, 12•45678.
M. tuberculosis strain CA-56 failed to amplify for an alternate RD1 target amplicon (Rv3879c) because of the RD1tbA LSP (62).
As an exception, M. africanum subtype Ib strain Percy13 failed to amplify; resulting profile, 1•3456•8.
Failure to amplify from M. africanum subtype Ib strain 15082 was supported by a flanking PCR that produced a bridge amplicon of the predicted size.
As a result of RD1das; the alternate RD1 target amplicon (Rv3879c) was PCR positive.
Failure to amplify was supported by a flanking PCR that produced a bridge amplicon of the predicted size.