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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Bioorg Med Chem. 2014 Sep 16;22(21):5924–5934. doi: 10.1016/j.bmc.2014.09.015

Table 4.

Enzymatic Activities of Modified DHFRs Containing FRET Pairs

DHFR kD, s−1
wild type DHFR38 12
37D 11.8 ± 0.4a
37E 12.1 ± 0.4
79E 11.2 ± 0.5
17G 7.1 ± 0.5
17G37D 7.1 ± 0.4
17G37E 6.1 ± 0.4
17G79E 5.2 ± 0.2
a

Standard deviation is based on data from three experiments.