Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Engineers · Michaelis–Menten

Michaelis–Menten for a photosynthesis rate

Built for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed. Simulate a photosynthesis rate live below — adjust the inputs and watch it respond, right in your browser.

Michaelis–Menten Enzyme KineticsLive

how enzymes saturate

Controls

Presets

Vmax (µmol/min)

Km (mM)

Substrate [S] (mM)

Enzymes speed reactions but saturate: as substrate rises, the rate approaches a ceiling Vmax. Km — the substrate level giving half Vmax — measures how tightly the enzyme binds. Low Km means high affinity. Educational tool.

▶ Run in Python

Data Inspector

Reaction rate v50.0 µmol/min

Fraction of Vmax50%

Km (half-Vmax [S])5 mM

Governing equation

v = \frac{V _{ma x} [ S ]}{K _{m} + [ S ]} = \frac{100 \cdot 5}{5 + 5} = 50.0 μ mol/min

Reading this result: At [S] near Km (5 mM) the enzyme works at about half speed (50% of Vmax) — this is the steepest, most substrate-sensitive part of the curve.

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Frequently asked questions

Is this good for engineers?: Yes — this version of "Michaelis–Menten for a photosynthesis rate" is framed for engineers using it for real design work. Go from concept to a running model in the browser, then scale to the cloud when needed.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.