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. 2010 Jan;23(1):160–201. doi: 10.1128/CMR.00037-09

TABLE 6.

Clinically identified complex mutants of TEM (CMT) β-lactamasesa

β-Lactamase Amino acid at positionb:
39 69 104 130 164 237 238 240 244 265 275 276 284
TEM-1 Gln Met Glu Ser Arg Ala Gly Glu Arg Thr Arg Asn Ala
TEM-50 (CMT-1) Leu Lys Ser Asp
TEM-68 Ser Lys Met Leu
TEM-89 (CMT-3) Lys Lys Gly Ser
TEM-109 (CMT-5) Leu Lys His Cys
TEM-121 (CMT-4) Lys Lys Ser Thr Lys Ser
TEM-151 Val His Asp Gly
TEM-152 Val His Lys Asp
TEM-154 Leu Ser
TEM-158 (CMT-9) Leu Ser Asp
a

Based on data from www.lahey.org/studies/webt.asp.

b

Unless otherwise indicated, the amino acid is the same as in the non-IR TEM-1.