cobrapy

Automate constraint-based metabolic modeling analyses with the COBRApy API.

21|1|Updated Mar 19, 2026
One-click install
npx skills add https://github.com/OwnLabAI/ownlab --skill cobrapy-ownlabai
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: cobrapy
Source: https://github.com/OwnLabAI/ownlab/tree/main/mart/skills/scientific-skills/cobrapy
Command: npx skills add https://github.com/OwnLabAI/ownlab --skill cobrapy-ownlabai

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

COBRApy enables researchers to construct, simulate, and analyze genome-scale metabolic models using constraint-based methods like FBA, FVA, and gapfilling, empowering systematic exploration of metabolic networks.

Core Features & Use Cases

  • Model management: load and save models in SBML, JSON, and YAML formats; handle metabolites, reactions, and genes.
  • Core analyses: perform Flux Balance Analysis (FBA), Parsimonious FBA (pFBA), geometric FBA, and Flux Variability Analysis (FVA); run single/double gene deletions and flux sampling.
  • Workflows & Production design: design minimal media, production envelopes, gapfilling, and production-strain exploration; build models from scratch and validate with common checks.
  • Real-world use: apply to genome-scale metabolic models for growth prediction, pathway exploration, and metabolic engineering experiments.

Quick Start

Install COBRApy, load a model (e.g., ecoli), and run a basic FBA to obtain a growth prediction.

Frequently Asked Questions about cobrapy

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I perform flux balance analysis on a genome-scale metabolic model in Python?

Flux balance analysis in Python automates constraint-based metabolic modeling by loading genome-scale models and running FBA to obtain growth predictions. You load an SBML or JSON model and execute FBA to calculate optimal metabolic flux distributions.

Can I run single and double gene deletions to simulate metabolic knockouts?

Gene deletion simulations are supported natively for single and double gene knockouts in Python. The Skill automates knockout workflows by removing target genes from genome-scale metabolic models and evaluating the resulting growth phenotypes.

What formats are supported for loading and saving metabolic models?

Metabolic models can be loaded and saved in SBML, JSON, and YAML formats. This format compatibility ensures you can import standard genome-scale metabolic network files and persist modified models after performing analyses like gapfilling.

Does this approach support flux variability analysis and parsimonious FBA?

Flux variability analysis and parsimonious FBA are both supported alongside geometric FBA. These constraint-based methods evaluate the range of possible flux distributions and identify the most efficient metabolic network solutions.

How do I design minimal media and explore production strains for metabolic engineering?

Minimal media design and production envelope analysis are automated to explore production strains. You define environmental constraints on your metabolic model and generate production envelopes to identify optimal engineered strains.

What are the limitations of constraint-based metabolic modeling for pathway exploration?

Constraint-based metabolic modeling assumes steady-state conditions and does not capture kinetic parameters or dynamic regulatory effects. It is best suited for predicting growth yields and flux distributions rather than simulating time-dependent metabolic dynamics.