Category Archives: Pathways

How do I plot phase plots using Tellurium?

Phase plots are a common way to visualize the dynamics of models where time courses are generated and one variable is plotted against the other. For example consider the following model that can show oscillations:

In this model S2 … Continue reading

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How to get the Stoichiometry Matrix using Tellurium

Here is a simple need, given a reaction model how do we get hold of the stoichiometry matrix? Consider the following simple model:

Running this script by clicking on the green arrow in the tool bar will yield:

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How to do a simple simulation using Tellurium

The most common requirement is the ability to carry out a simple time course simulation of a model. Consider the model:     Two reactions and three metabolites, S1, S2 and S3. We can describe this system using an Antimony … Continue reading

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How do I run a stochastic simulation using Tellurium/libRoadRunner?

In this post I will show you how to run a stochastic simulation using our Tellurium application. Tellurium is a set of libraries that can be used via Python. One of those libraries is libRoadRunner which is our very fast … Continue reading

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Computing the steady state using Tellurium

If you’re building a model and you want to quickly find the model’s steady state, you can call the command steadyState. Let’s illustrate this with an example:

Running this script by clicking in the green arrow in the tool … Continue reading

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Bifurcation Analysis with Tellurium

I thought I’d try and write a series of HowTos on Tellurium, our python based tool for the construction, simulation and analysis of biochemical models. Details on this tool can be found here. One the unique features of Tellurium is … Continue reading

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Tikz Code for Drawing Metabolic Feedback Loops

I needed some figures that displayed a variety of different negative feedback loops so I created these using Tikz. Nothing particularly special. There are some absolute distances in the code which perhaps could be removed to make it more generic. … Continue reading

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New Modeling Book Published

I am happy to announce the publication of my new book this March: Essentials of Biochemical Modeling. Computer models of biochemical systems are starting to play an increasingly important role in modern systems and synthetic biology. This monograph introduces students to … Continue reading

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Reversibility and Product Inhibition

It is common in biochemistry to categorize reactions as either reversible or irreversible. What do we mean by these terms? Let’s look at a simple reaction such as:     where A is transformed to B. The rate of reaction … Continue reading

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Announce: release of libRoadRunner 1.0.0

After a lot of work I am pleased to announce the first official release of libRoadRunner, 1.0.0. This represents a complete rewrite of the original C# RoadRunner developed by Frank Bergmann and Herbert Sauro. libRoadRunner is a high-performance cross-platform C/C++ library that supports … Continue reading

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