Figure 1

Partial DNA sequence alignment of (A) CTX-M type sequences E. coli CTX-M 1 (Group 1), E. coli CTX-M-9 (Group 9), E. coli CTX-M-15 (Group 1), E. coli CTX-M-25 (Group 25), E. coli CTX-M-28 (Group 2), S. typhimurium CTX-M-2 (Group 2), C. freundii CTX-M-3 (Group 1), C. amalonaticus CTX-M-8 (Group 8); (B) , K. oxytoc a CTX-M-3 (Group 1) and K. oxytoc a CTX-M-35 (Group 2), (C) chromosomally CTX-M-like sequences K. oxytoca K1, K. oxytoca OXY-1 to OXY-6, C. sedlakii Sed-1, C. amalonaticus CdiA, C. koseri CKO, P. vulgaris K1, K. vulgaris CumA, and P. penneri HugA genes and the universal degenerated CTX-M-U1.SE and CTX-M-U2. AS primers. Dashes indicate sequence homologies. The degenerated nucleotide sequence positions in the primers and its corresponding nucleotides in the aligned genes are indicated in grey. For clarity, sense and antisense DNA sequences of the universal degenerated CTX-M-U2.AS (reverse) primer are given.