Projects

Navigation
To browse the projects in the ontology view use either the graphical scheme below or the navigation panel on the left. The root level is displayed after clicking on the Projects button in the main menu bar at the top of the screen. For switching to model view, click on the project name in the navigation tree.

The central feature of the ontology view is the graphical scheme representing the projection of the project to respective biological structures. The graphical scheme is active, the individual model parts implemented in the project are emphasized yellow when moving the mouse over them. After clicking on any implemented part, the scheme is zoomed in. The description panel at the bottom contains all the detailed information relevant for the currently focused project level.

Annotations Tab
All the annotation terms relevant for the currently focused level of the project are displayed on the Annotation Tab below the scheme. Individual annotation data can be unfolded by clicking on the requested annotation item header.

Components Tab
The Components Tab displays all the model species (state variables) relevant for the currently focused project level. Annotation data for particular components are accessible after clicking on the requested component header.

Reactions Tab
Reactions Tab contains information regarding the modeled reactions. After clicking on the particular reaction header, the reacting components and relevant kinetic parameters are displayed.

Parameters Tab
All quantitative parameters are managed under Parameters Tab. Constants are separated from algebraically evaluated parameters.

Simulation Tab
Simulation and SBML export are available by clicking on appropriate buttons at the bottom of the tab. All relevant settings of parameters and initial conditions is listed in respective folders. Folder Options contains parameters of the simulation algorithm.

Fb

“Oxidized state of the last iron-sulfur cluster in photosystem I. It accepts electrons from the previous iron-sulfur cluster.”

Fb
Model states corresponding to the currently selected level:
Initial value: 0
Simulation type: reaction
Initial value: 1
Simulation type: reaction
“Reduced Pc (Pc) donates electron to oxidized P700 (P700+). This reaction is considered reversible with forward and backward rate constants kfR and kbR, respectively.”


Function: Mass Action (irreversible)
Reaction rate: k1*P700/Fb * Pc+
Product: Pc, P700+/Fb
Kinetic rate constant Value
k1 10
“Reduced Pc (Pc) donates electron to oxidized P700 (P700+). This reaction is considered reversible with forward and backward rate constants kfR and kbR, respectively.”


Function: Mass Action (irreversible)
Reaction rate: k1*P700+/Fb * Pc
Product: P700/Fb, Pc+
Kinetic rate constant Value
k1 100
“Reduced state of the last iron-sulfur cluster in photosystem I (Fb-) donates its electron to oxidized Fd. This reaction is considered reversible with forward and backward rate constants kfX and kbX, respectively.”


Function: Mass Action (irreversible)
Reaction rate: k1*P700+/Fb * Fd-
Product: Fd, P700+/Fb-
Kinetic rate constant Value
k1 10
“Reduced state of the last iron-sulfur cluster in photosystem I (Fb-) donates its electron to oxidized Fd. This reaction is considered reversible with forward and backward rate constants kfX and kbX, respectively.”


Function: Mass Action (irreversible)
Reaction rate: k1*P700+/Fb- * Fd
Product: Fd-, P700+/Fb
Kinetic rate constant Value
k1 100
“It occurs in the model between P700 and Fb with rate constant kL1 leading to formation of P700+ and Fb-. Value of kL1 is determined by amount of excitations coming to reaction centre of photosystem I and concentration of chlorophylls in a sample.”


Function: Mass Action (irreversible)
Reaction rate: kL1*P700/Fb
Product: P700+/Fb-
Kinetic rate constant Value
“Reduced state of the last iron-sulfur cluster in photosystem I (Fb-) donates its electron to oxidized Fd. This reaction is considered reversible with forward and backward rate constants kfX and kbX, respectively.”


Function: Mass Action (irreversible)
Reaction rate: k1*P700/Fb * Fd-
Product: Fd, P700/Fb-
Kinetic rate constant Value
k1 10
“Reduced state of the last iron-sulfur cluster in photosystem I (Fb-) donates its electron to oxidized Fd. This reaction is considered reversible with forward and backward rate constants kfX and kbX, respectively.”


Function: Mass Action (irreversible)
Reaction rate: k1*P700/Fb- * Fd
Product: Fd-, P700/Fb
Kinetic rate constant Value
k1 100

Constant quantities

Initial value: 3500
Simulation type: fixed
Initial value: 1750
Simulation type: fixed
Initial value: 175
Simulation type: fixed
Initial value: 35
Simulation type: fixed
Initial value: 10
Simulation type: fixed
Initial value: 100
Simulation type: fixed
Initial value: 200
Simulation type: fixed
Initial value: 4000
Simulation type: fixed

Assigned quantities

Initial expression: ((1-0.55)*("P680+/Qa-/Qb"+"P680+/Qa-/Qb-"+"P680+/Qa-/Qb2-"+"P680/Qa-/Qb2-"+"P680/Qa-/Qb"+"P680/Qa-/Qb-")/(1-0.55*("P680+/Qa-/Qb"+"P680+/Qa-/Qb-"+"P680+/Qa-/Qb2-"+"P680/Qa-/Qb2-"+"P680/Qa-/Qb"+"P680/Qa-/Qb-")))/(1+((1/45+(("P680+/Qa-/Qb"+"P680+/Qa-/Qb-"+"P680+/Qa-/Qb2-"+"P680/Qa-/Qb2-"+"P680/Qa-/Qb"+"P680/Qa-/Qb-")*4/36))*"PQ"))
Simulation type: assignment
Initial expression: (1-0.55)*("P680+/Qa-/Qb"+"P680+/Qa-/Qb-"+"P680+/Qa-/Qb2-"+"P680/Qa-/Qb2-"+"P680/Qa-/Qb"+"P680/Qa-/Qb-")/(1-0.55*("P680+/Qa-/Qb"+"P680+/Qa-/Qb-"+"P680+/Qa-/Qb2-"+"P680/Qa-/Qb2-"+"P680/Qa-/Qb"+"P680/Qa-/Qb-"))
Simulation type: assignment
Initial expression: 10^(-(2.16*10^(-7)*1590*"Pc+" + 2.16*10^(-7)*10300*("P700+/Fb"+"P700+/Fb-")))
Simulation type: assignment
Name Value
bL-/bH.c-/f 0
bL-/bH.c-/f- 0
bL-/bH.c/f 0
bL-/bH.c/f- 0
bL-/bH.c2-/f 0
bL-/bH.c2-/f- 0
bL/bH.c-/f 0
bL/bH.c-/f- 0
bL/bH.c/f 1
bL/bH.c/f- 0
bL/bH.c2-/f 0
bL/bH.c2-/f- 0
Fd 3
Fd- 0
FNRa 0
FNRa- 0
FNRa2- 0
FNRi 3
P680+/Qa-/N 0
P680+/Qa-/Qb 0
P680+/Qa-/Qb- 0
P680+/Qa-/Qb2- 0
P680+/Qa/Qb 0
P680+/Qa/Qb- 0
P680+/Qa/Qb2- 0
P680/Qa-/N 0
P680/Qa-/Qb 0
P680/Qa-/Qb- 0
P680/Qa-/Qb2- 0
P680/Qa/N 0
P680/Qa/Qb 1
P680/Qa/Qb- 0
P680/Qa/Qb2- 0
P700+/Fb 0
P700+/Fb- 0
P700/Fb 1
P700/Fb- 0
Pc 3
Pc+ 0
PQ 2.5
PQH 2.5
S0 0.25
S1 0.75
S2 0
S3 0

Constant quantities

Name Value
kAB1 3500
kAB2 1750
kBA1 175
kBA2 35
kbLF 10
kfLF 100
kL1 200
kL2 4000

Assigned quantities

Name Value
Fq(t)
Funq(t)
I820
Name Value
Simulation start 0.000001
Simulation end 1
Simulation tolerance 0.1
Use log time scale 1
Multiplication of time scale 1
Number of steps 200
Label x-axis time [s]