Table 1 Kinetic parameters for apparent sodium affinity measured from betaine uptake of WT BetP and N309A mutant.

From: Substrate-bound outward-open state of the betaine transporter BetP provides insights into Na+ coupling

 

K m

V max

 

μM

(nmol min −1  mg −1  cdw)

WT

3.8±0.9*

82.9±4.8

N309A

79.7±16.4

123.0±9.7

  1. cdw, cell dry weight; WT, wild type.
  2. *Each value corresponds to the average of at least three independent experiments. ± corresponds to s.d.
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