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. 1999 Jul;43(7):1657–1661. doi: 10.1128/aac.43.7.1657

TABLE 4.

Nucleotide differences between bla genes

Nucleotide no.^a	Nucleotide (amino acid)^b
Nucleotide no.^a	bla_TEM-1A^c	bla_TEM-1B^c	bla_TEM-2^c	bla_{TEM-59/IRT-17}
226	C	T	C	C
317	C (Gln-39)	C	A (Lys-39)	A
346	A	A	G	G
436	C	T	T	T
590	A (Ser-130)	A	A	G (Gly-130)
604	G	T	G	G
682	T	T	C	C
925	G	G	A	A

^a

Nucleotide numbering is according to Sutcliffe (41).

^b

Amino acid numbering is according to Ambler et al. (1).

^c

Per reference 18.