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. 2023 Aug 17;12:e80152. doi: 10.7554/eLife.80152

Table 7. NMDAr parameters.

The existing model of NMDAr (GluN2A) was adapted to obtain the NMDAr (GluN2B) model. The decay time of NMDAr (GluN2B) was fitted to match decay time in Iacobucci and Popescu, 2018 and the temperature dependence uses the EPSP decay time from Korinek et al., 2010.

Name Value Reference
NMDAr (GluN2A)
Glutamate binding ka=34μM-1s-1 Popescu et al., 2004
Glutamate binding kb=17μM-1s-1 Popescu et al., 2004
Forward rate kc=127s-1 Popescu et al., 2004
Forward rate kd=580s-1 Popescu et al., 2004
Opening rate ke=2508s-1 Popescu et al., 2004
Opening rate kf=3449s-1 Popescu et al., 2004
Closing rate k-f=662s-1 Popescu et al., 2004
Closing rate k-e=2167s-1 Popescu et al., 2004
Backward rate k-d=2610s-1 Popescu et al., 2004
Backward rate k-c=161s-1 Popescu et al., 2004
Glutamate unbinding k-b=120s-1 Popescu et al., 2004
Glutamate unbinding k-a=60s-1 Popescu et al., 2004
NMDAr (GluN2B)
Glutamate binding sb=0.25kb adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Glutamate binding sc=0.25kc adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Forward rate sc=0.25kc adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Forward rate sd=0.25kd adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Opening rate se=0.25ke adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Opening rate sf=0.25kf adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Closing rate s-f=0.23k-f adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Closing rate s-e=0.23k-e adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Backward rate s-d=0.23k-d adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Backward rate s-c=0.23k-c adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Glutamate unbinding s-b=0.23k-b adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Glutamate unbinding s-a=0.23k-a adapted from GluN2A (Popescu et al., 2004; Iacobucci and Popescu, 2018)
Other parameters
Total number of NMDAr NNMDA=15 5–30 (Spruston et al., 1995; Bartol et al., 2015; Nimchinsky et al., 2004)
Distribution of GluN2A and GluN2B defined by  rage fitted from Sinclair et al., 2016, see Figure 13b and e
NMDAr conductance depending on calcium γNMDA fitted from Maki and Popescu, 2014, see Figure 13c
NMDAr reversal potential Erev =NMDA0mV Destexhe et al., 1994
Fraction of calcium carried by NMDAr fCa=0.1 Griffith et al., 2016