Draw the catalysis reaction depicted in this figure:
+
This reaction is described in many publications. For our example, we will use the publication from Strushkevich et al.
which includes the following sentence:
"The first step in steroid hormone biosynthesis is the conversion of cholesterol to pregnenolone and isocaproic aldehyde by mitochondrial CYP11A1."
@@ -60,7 +61,7 @@
Your Mission
-
Download the starter pathway here: WP3966. This starter pathway already contains the metabolite Data Nodes, and the conversion interaction between them.
+
Download the starter pathway here: draw-catalysis-start.gpml. This starter pathway already contains the metabolite Data Nodes, and the conversion interaction between them.
Launch PathVisio and open the dowloaded file via File > Open.
Select GeneProduct from the Data Node palette in the Objects tab.
Click on the canvas to place the node.
@@ -74,7 +75,7 @@
Your Mission
(Optional) Align nodes using toolbar actions.
Done!
Save your work as a GPML file under File > Save As.
-
Drag-and-drop the GPML file below to submit.
+
Drag-and-drop the GPML file below to check if it is correct.
The conversion of one metabolite into another comprises the fundamental biological process of metabolism.
Often catalyzed by enzymes and chained together in a series, each conversion reaction involves a change in the chemical structure of a metabolite or small molecule.
- Conversion reactions are thus drawn as two metabolites and a mim-conversion interaction, pointing from the subtrate to the product. MIM
+ Conversion reactions are thus drawn as two metabolites and a mim-conversion interaction, pointing from the substrate to the product. MIM
is a diagram convention that includes specific notations for interactions, which are included in WikiPathways. Since their meaning is specific, they should be used only in specific circumstances,
as in this case, for a conversion between two metabolites.
Note that for the example below, we are only modeling part of the full reaction; we are excluding the enzyme that catalyses the reaction. The next step will show
@@ -56,22 +56,23 @@
Your Mission
Launch PathVisio and select File > New to start a new pathway. Close the Pathway attributes dialog.
In the upper left of the canvas, the Pathway Information area will be displayed, and will say "Title: New Pathway". Select this by clicking on it, and in the Properties tab select "Homo sapiens" in the Species menu.
Select Metabolite from the Data Node palette in the Objects tab.
-
Click on the canvas to place the node.
-
Double-click on the node to open its properties.
+
Click on the canvas to place the node.
+
Double-click on the node to open its properties.
Search for “glucose”; Choose any of the entries that just say “glucose”; Click OK to select the identifier, and then click OK again to close the node properties window.
-
Repeat these steps to make the “glucose 6-phosphate” metabolite node. Note that searching for exact matches of metabolite names can be tricky, as some databases
+
Repeat these steps to add the “glucose 6-phosphate” metabolite node. Note that searching for exact matches of metabolite names can be tricky, as some databases
might use the name "glucose 6-phosphate", while others use "glucose-6-phosphate".
Select the mim-conversion arrow from the MIM interactions palette in the Objects tab:
-
Click anywhere on the canvas to create the interaction.
-
Drag each end of the interaction over a target area on each node (highlighted in green on hover); Note source vs target. The video below shows how to attach the ends of the interaction to the nodes.
+
Click anywhere on the canvas to create the interaction.
+
Drag each end of the interaction over a target area on each node (highlighted in green on hover) to connect the interaction to the node, noting source vs target. The video below shows how to attach the ends of the interaction to the nodes.
-
(Optional) Align nodes using toolbar actions. To align nodes, select them both, then click the Align horizontal centers button
+
+
(Optional) Align nodes using toolbar actions. To align nodes, select them both, then click the Align horizontal centers button
from the toolbar.
Done!
-
Save your work as a GPML file under File > Save As.
-
Drag-and-drop the GPML file below to submit.
+
Save your work as a GPML file under File > Save As.
+
Drag-and-drop the GPML file below to check if it is correct.
by clicking on it, and in the Properties tab select "Homo sapiens" in the Species menu.
Select GeneProduct from the Data Node palette in the Objects tab.
Click on the canvas to place the node.
-
Double-click on the node to open its properties.
+
Double-click on the node to open the DataNode properties dialog.
Search for “ACO2”; Choose any of the entries that just say “ACO2”. In terms of choosing which identifier system to use, we recommend the following priority order: Ensembl, Entrez, other systems.
Click OK to select the identifier, and then click OK again to close the node properties window.
Done!
Save your work as a GPML file under File > Save As.
-
Drag-and-drop the GPML file below to submit.
+
Drag-and-drop the GPML file below to check if it is correct.
Launch PathVisio and select File > New to start a new pathway. Close the Pathway attributes dialog.
+
Launch PathVisio and select File > New to start a new pathway. Close the Pathway attributes dialog.
In the upper left of the canvas, the Pathway Information area will be displayed, and will say "Title: New Pathway". Select this
by clicking on it, and in the Properties tab select "Homo sapiens" in the Species menu.
Select Metabolite from the Data Node palette in the Objects tab.
@@ -58,7 +58,7 @@
Your Mission
Click OK to select the identifier, and then click OK again to close the node properties window.
Done!
Save your work as a GPML file under File > Save As.
-
Drag-and-drop the GPML file below to submit.
+
Drag-and-drop the GPML file below to check if it is correct.
Launch PathVisio and open the dowloaded file via File > Open. The two metabolites, Acetyl-CoA and HMG-CoA, and the conversion between them have already been added. You will be adding the enzyme and the catalysis interaction.
Add the enzyme
@@ -68,42 +68,8 @@
Add and connect the catalysis arrow
Done!
Save your work as a GPML file under File > Save As.
-
Drag-and-drop the GPML file below to submit.
+
Drag-and-drop the GPML file below to to check if it is correct.