Description
Return turnover frequency on an active-enzyme mole basis.
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 turnover frequency on an active-enzyme mole basis.
When to use this tool
Use Enzyme Turnover Molar Enzyme Basis when evaluating the stated enzyme, binding, dilution or rate-basis term.
How to use the tool and how it works
- Enter vmaxMolesPerSecond, enzymeMoles, activeFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read activeEnzymeMoles, turnoverPerSecond. Use the output convention below.
Return turnover frequency on an active-enzyme mole basis. Require vmaxMolesPerSecond >= 0, enzymeMoles > 0 and activeFraction in (0,1]; activeEnzyme = enzyme*activeFraction, turnover = vmax/activeEnzyme.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| vmaxMolesPerSecond | Vmax Moles Per Second | Required. Finite number; minimum 0. |
| enzymeMoles | Positive supplied total catalytic-enzyme/site amount in moles under the caller’s explicit convention. | Required. Finite number; strictly above 0. |
| activeFraction | Active Fraction | Required. Finite number; maximum 1; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| activeEnzymeMoles | Active Enzyme Moles | Required. Finite number. |
| turnoverPerSecond | Turnover Per Second | Required. Finite number. |
{
"input": {
"vmaxMolesPerSecond": 0.000002,
"enzymeMoles": 1e-8,
"activeFraction": 0.5
},
"output": {
"activeEnzymeMoles": 5e-9,
"turnoverPerSecond": 400
}
}Limitations and assumptions
- Enzyme moles must represent the intended catalytic-site convention; active fraction and actual saturation are supplied, not measured.
- 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 Inhibition Competitive Apparent Km
Return competitive apparent Km.