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. 1998 Aug;42(8):2125–2127. doi: 10.1128/aac.42.8.2125

TABLE 3.

Nucleotide differences among blaTEM genes

Nucleotide positiona Nucleotide (amino acid)b
blaTEM-1 blaTEM-21c blaTEM-21d of Mm126
317 C (Gln-39) A (Lys-39) A (Lys-39)
346 A G G
436 C T T
512 G (Glu-104) A (Lys-104) A (Lys-104)
660 A (His-153) G (Arg-153) G (Arg-153)
682 T —e C
914 G (Gly-238) A (Ser-238) A (Ser-238)
925 G A A
a

Nucleotide numbering is according to the system of Sutcliffe (19). 

b

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

c

Mutations determined by PCR-restriction fragment length polymorphism (2). 

d

Mutations determined by DNA sequencing. 

e

—, not determined.