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. Author manuscript; available in PMC: 2016 Nov 26.
Published in final edited form as: Biochemistry. 2016 Apr 22;55(17):2479–2490. doi: 10.1021/acs.biochem.6b00056

Table 1.

Melting temperature values of serine β-lactamases and their respective serine nucleophile mutants.

β-Lactamase Tm (°C) ΔTm (°C)
TEM-1 54.2 -
TEM-1 S70G 56.3 2.1
TEM-1 S70A 54.6 0.4
CTX-M-14 58.2 -
CTX-M-14 S70G 62.2 4.0
KPC-2 63.3 -
KPC-2 S70G 76.6 13.3
P99 61.9 -
P99 S64G 71.5 9.6
OXA-48 58.9 -
OXA-48 S70G 63.5 4.6
OXA-48 S70A 59.5 0.6
OXA-163 55.2 -
OXA-163 S70G 58.6 3.4
OXA-163 S70A 55 −0.2