Do I need to install anything?

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

For Hobbyists & Makers · Enzyme Pathway

Enzyme Pathway for an immune response

Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate an immune response live below — adjust the inputs and watch it respond, right in your browser.

Enzyme Kinetics

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Enzyme Kinetics (Michaelis-Menten)Live

reaction rate vs substrate

Controls

Presets

Vmax

Inhibitor [I]/Ki (competitive)

Lineweaver-Burk plot

Michaelis-Menten kinetics describe how reaction rate rises with substrate and saturates at Vmax. Km is the substrate concentration giving half-maximal rate — a measure of enzyme affinity. A competitive inhibitor raises the apparent Km without changing Vmax, seen as a shift in the double-reciprocal Lineweaver-Burk line.

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Data Inspector

Vmax100

Apparent Km5.0

v at [S]=Km50.0

Governing equation

v = \frac{V _{ma x} [ S ]}{K _{m} + [ S ]} = \frac{100 [ S ]}{5.0 + [ S ]}

Reading this result: With Km 5, the rate hits half of Vmax (100) at [S]=5; pushing substrate well past Km barely raises v as the curve flattens toward saturation.

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Frequently asked questions

Is this good for hobbyists & makers?: Yes — this version of "Enzyme Pathway for an immune response" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.