Leduc et al. 10.1073/pnas.0401365101. |
Table 3. Plasmids and DNA oligonucleotides described in this work
Mutation(s) |
|||
Plasmids |
Modified codon |
Amino acid replacement |
Mutagenic DNA oligonucleotides* |
pGL2† |
– |
– |
– |
pHP1 |
CGG>GCG |
R74A |
TTGCAAGAATTGAGCGCGCATAGAATAGCGAGC (1) |
pHP2 |
CGG>AAG |
R74K |
TTGCAAGAATTGAGCAAGCATAGAATAGCGAGC (2) |
pHP3 |
TCA>GCT |
S84A |
GCGAGCTTGAGCGTGAAAGCTAGCCGTTACACTTTGAGG (3) |
pHP4 |
TCA>TGC |
S84C |
GCGAGCTTGAGCGTGAAATGCAGCCGTTACACTTTGAGG (4) |
pHP5 |
TCA>TAT |
S84Y |
GCGAGCTTGAGCGTGAAATATAGCCGTTACACTTTGAGG (5) |
pHP6 |
AGC>GCC |
S85A |
AGCTTGAGCGTGAAATCAGCCCGTTACACTTTGAGGG (6) |
pHP3/6 |
TCA>GCT/AGC>GCC |
S84A/S85A |
Oligos (3) and (6) were used |
pHP7 |
TAC>TTT |
Y87F |
GCGTGAAATCAAGCCGTTTTACTTTGAGGGAATTG (7) |
pHP8 |
CAT>CAA |
H48Q |
GGGAATATTTTTAGGCAATCTTCCCACTTTAGAG (8) |
pHP8/3 |
CAT>CAA/TCA>GCT |
H48Q/S84A |
Oligos (3) and (8) were used |
pHP8/4 |
CAT>CAA/TCA>TGC |
H48Q/S84C |
Oligos (4) and (8) were used |
Bold type in DNA oligonucleotides refers to the mutation introduced.
*Polarity of shown DNA sequences is from 5′ to 3′.
†
pGL2 carries a wild-type allele of H. pylori thyX that complements in an arabinose-dependent manner E. coli strain χ 2913 (thyA) to thymidine prototrophy (1). This plasmid was used as template for the site-directed mutagenesis reactions to obtain the mutant alleles described.1. Myllykallio, H., Lipowski, G., Leduc, D., Filee, J., Forterre, P. & Liebl, U. (2002) Science 297, 105–107.