Table I

Efficiency of transformation of deletions into TIGR4

Target gene
homology upstream*
homology downstream
size of inserted marker
size of deletion
trans-forming DNA (ng/ml)
trans-formants (CFU/ ml)
selected trans-formant

SP0071 – zmpC
757 (including 27 bp of zmpC)
807 (including 1 bp of zmpC)
1184 (cat)
5543
500
100
FP122
SP0664 – zmpB
715 (including 25 bp of zmpB)
838 (from 7 bp after zmpB)
894 (ermB)
5628
1500
10
FP173
SP1154 – iga
801 (including 11 bp of iga)
828 (including 27 bp of iga)
850 (spe)
6004
1500
120
FP174

* all sizes are expressed in base pairs. The total number of transformants obtained transforming 1 μg/ml were 5.2 × 102 CFU/ml using a chromosomal DNA carrying a point mutation conferring novobiocin resistance (positive control).

Chiavolini et al. BMC Microbiology 2003 3:14   doi:10.1186/1471-2180-3-14