Skip to main content
. Author manuscript; available in PMC: 2017 Oct 4.
Published in final edited form as: Biochemistry. 2016 Sep 19;55(39):5595–5609. doi: 10.1021/acs.biochem.6b00645

Table 4.

Autophosphorylation Rate Constants for CheY T+1 Mutants

Amino acid at T+1 kphos/KS (M−1s−1)a
PAM AcP MPI
Ser 10 ± 0.6 4.5 ± 0.8 15 ± 5
Thr 4.6 ± 0.5 4.2 ± 0.3 3.9 ± 0.9
Ala 9.2 ± 0.9 9.8 ± 2 54 ± 10
Met 3.1 ± 0.4 8.9 ± 2 26 ± 4
Val 0.34 ± 0.06 1.9 ± 0.03 3.7 ± 0.04
Ile 0.31 ± 0.06 1.6 ± 0.3 3.7 ± 0.2
a

Mean and standard deviations of the rate constants were determined from individual autophosphorylation time courses. Rate constants for wild type CheY are underlined.