TABLE I.

Model parameters.

Parameter	Variable	Value	Source
Average run duration in the absence of a chemoeffector gradient	${\tau }_0$	0.86 s	63
Average tumble duration	${\tau }_T$	0.14 s	63
Chemotactic sensitivity for l-aspartic acid	${\sigma }_{\mathit{chemo}}{C}_T$	35 s	Estimated
Dissociation constant for l-aspartic acid	$K_d$	18 μM	Estimated
Bacteria swimming speed	$‖\Vert |{\overrightarrow{V}}_b\Vert ‖$	34 μm/s	Measured
Mean change in bacteria bearing between successive run phases	${\theta }_{\mu }$	68°	63
Standard deviation of bacteria bearing change between run phases	${\theta }_{\sigma }$	36°	63
Basal QS signal (AHL) generation rate	$A_1$	3.19 molecules/s	Fitted
Upregulated QS signal (AHL) generation rate	$A_2$	234 molecules /s	Fitted
Hill constant	$H$	2.5	65
QS signal (AHL) upregulation threshold	$Q_0$	1.87 nM	Fitted
Rate of GFP translation	$k_{tr}$	4.0 × 10−1 molecules/s	Fitted
Rate of GFP maturation	$k_{G_m}$	3.02 × 10−3 s−1	Estimated69
Maximum rate of GFP degradation	$k_{\mathrm{deg}}$	5.54 molecules/s	Estimated70,71
Half-maximum concentration for GFP degradation	$K_m$	6650 molecules/cell	Estimated70
Diffusion coefficient of the QS signaling molecule (AHL) in water	$D_{\mathit{signal}}$	490 μm2/s	72
Rate of QS signal (AHL) degradation	$R_d$	10.8% h−1	73