Description
Return competitive apparent Km.
Enzyme and binding models relate supplied rates, concentrations and active-site conventions under specific assumptions. A local apparent parameter, turnover or occupancy term does not identify an inhibition mechanism, fit a kinetic model or establish a validated assay.
Return competitive apparent Km.
When to use this tool
Use Enzyme Inhibition Competitive Apparent Km when evaluating the stated enzyme, binding, dilution or rate-basis term.
How to use the tool and how it works
- Enter km, inhibitor, ki. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read alpha, apparentKm. Use the output convention below.
Return competitive apparent Km. Require km/inhibitor >= 0 and ki > 0; alpha = 1+inhibitor/ki, apparentKm = km*alpha.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| km | Km | Required. Finite number; minimum 0. |
| inhibitor | Inhibitor | Required. Finite number; minimum 0. |
| ki | Ki | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| alpha | Alpha | Required. Finite number. |
| apparentKm | Apparent Km | Required. Finite number. |
{
"input": {
"km": 2,
"inhibitor": 3,
"ki": 1
},
"output": {
"alpha": 4,
"apparentKm": 8
}
}Limitations and assumptions
- This is a supplied ideal competitive-inhibition model; no mechanism verification, Vmax estimate or parameter fitting is performed.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated observations and a complete suitable kinetic/assay model, including substrate, active-site and stoichiometric conventions, for biochemical inference.
References
Similar or alternative tools
- Enzyme Dilution Rate Basis Factor
Return dilution-corrected rate and a reference-volume equivalent.
- Enzyme Turnover Molar Enzyme Basis
Return turnover frequency on an active-enzyme mole basis.