Table 1 Fitting parameters for PET-FCS

From: Bidirectional communication between nucleotide and substrate binding sites in a type IV multidrug ABC transporter

BmrA NBD construct

a1

τ1 (μs)

a2

τ2 (μs)

a3

τ3 (μs)

S516C

0.05 \(\pm\)0.01

8 \(\pm\)2

--

--

--

--

S516C-N459W

0.19 \(\pm\)0.03

80 \(\pm\)30

0.62 \(\pm\)0.06

2.5 \(\pm\)0.4

0.72 \(\pm\)0.06

0.24 \(\pm\)0.04

S516C-N459W-W413F

0.19 \(\pm\)0.01

39 \(\pm\)5

--

--

0.18 \(\pm\)0.01

0.57 \(\pm\)0.01

S516C-N459W + ADP

0.35 \(\pm\)0.03

24 \(\pm\)4

0.56 \(\pm\)0.04

1.5 \(\pm\)0.2

0.42 \(\pm\)0.04

0.13 \(\pm\)0.03

S516C-N459W + ATP

0.22 \(\pm\)0.08

253 \(\pm\)16

0.51 \(\pm\)0.06

7 \(\pm\)2

0.95 \(\pm\)0.06

0.30 \(\pm\)0.04

S516C-N459W-W413F + ADP

0.18 \(\pm\)0.01

104 \(\pm\)12

0.18 \(\pm\)0.01

2.7 \(\pm\)0.2

--

--

S516C-N459W-W413F + ATP

0.19 \(\pm\)0.02

177 \(\pm\)40

0.20 \(\pm\)0.01

5.7 \(\pm\)0.7

--

--

  1. Kinetic parameters obtained for the BmrA NBD single (S516C), double (N459W-S516C) and the triple (N459W-S516C-W413F) mutants in apo and after incubation with ADP or ATP.