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Table 1 Parametric sensitivity analysis of the complete model for GLUT4 membrane translocation

From: A rule-based model of insulin signalling pathway

Parameter

Complete model

wo_feedback p70S6K

wo_feedback

ERK1/2

Process

k_13

−84.89 %

−83.59 %

−84.89 %

GLUT4 translocation

k13p

66.02 %

66.76 %

66.02 %

GLUT4 translocation

k13

19.03 %

17.01 %

19.03 %

GLUT4 translocation

n_p70

−15.21 %

-

−15.21 %

p70 mediated IRS1 phosphorylation at Ser

k9a

8.25 %

13.87 %

8.25 %

lipids PI(3,4,5)P3 formation

k9s

−8.25 %

−13.86 %

−8.25 %

lipids PI(3,4,5)P3 formation

k8

7.36 %

10.88 %

7.36 %

IRS1_PI3K complex formation

k_8

−7.36 %

−10.87 %

−7.35 %

IRS1_PI3K complex formation

k_14

−5.25 %

−5.19 %

−5.25 %

GLUT4 degradation

k_7

−5.05 %

−2.68 %

−5.05 %

IRS1 dephosphorylation at Tyr

k7

5.05 %

2.68 %

5.05 %

IRS1 phosphorylation at Tyr

k_7p

4.45 %

0.53 %

4.45 %

IRS1 dephosphorylation at Ser

k15

−4.30 %

-

−4.30 %

IRS1 phosphorylation by P70S6K

Kd_p70

0.72 %

-

0.72 %

p70 mediated IRS1 phosphorylation at Ser

Vmax

0.65 %

2.18 %

0.65 %

PKC and p70 mediated IRS1 phosphorylation at Ser

k4p

−0.51 %

−0.27 %

−0.52 %

Phosphorylated receptor internalization

k_21

−0.18 %

-

−0.18 %

TSC1-TSC2 T1462_phosphorylation_by_Akt_pT309

k7p

−0.15 %

−0.54 %

−0.15 %

IRS1 phosphorylation at Ser

k41

0.14 %

0.46 %

0.14 %

IRS1-GS and IRS1-SHP2 complex disruption

  1. Sensitivity coefficients are ranked accordingly to their absolute values and their corresponding values upon P70S6K-IRS1 and ERK1/2-GRB2/SOS negative feedback loop removal are also shown. Only coefficient greater than 0.1 % (absolute value) either in the original or modified model are reported. The column “Process” describes the biological process to which the parameter takes place