Education
Specific Activity Calculator (U/mg protein)
Specific activity = U ÷ mg protein (or U/mL ÷ mg/mL): the purity metric of every purification table, with nkat/mg conversion and the kcat/MW purity ceiling. Educational use only.
json· JSON resultOpen tool
Quick start
Call this tool from your code in three languages.
cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/specific-activity-calculator' \
-H 'Content-Type: application/json' \
-d '{"mode":"mass","activityU":40,"proteinMg":5,"activityPerMl":250,"proteinMgPerMl":10,"decimalPlaces":2}'API reference
Send a POST request with your inputs as JSON. File parameters require a separate upload first.
Endpoint
HTTP
POST https://api.elysiatools.com/en/api/tools/specific-activity-calculatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| mode | select | Yes | Enter totals (U and mg) or concentrations (U/mL and mg/mL) — the ratio is the same. |
| activityU | number | Yes | Total activity in the sample (mass mode). |
| proteinMg | number | Yes | Total protein mass in the same sample (mass mode). |
| activityPerMl | number | Yes | Activity per mL of sample (concentration mode). |
| proteinMgPerMl | number | Yes |
MCP integration
Add this tool to your Model Context Protocol server so AI agents can list and call it.
Server configuration
Add this block to your MCP client configuration:
mcp.json
{
"mcpServers": {
"elysiatools-specific-activity-calculator": {
"name": "specific-activity-calculator",
"description": "Specific activity = U ÷ mg protein (or U/mL ÷ mg/mL): the purity metric of every purification table, with nkat/mg conversion and the kcat/MW purity ceiling. Educational use only.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=specific-activity-calculator",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}List available tools
After connecting to the SSE endpoint, list the exposed tools:
tools/list
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Call this tool
Invoke the tool by its id, passing arguments built from its parameters:
tools/call
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "specific-activity-calculator",
"arguments": {
"mode": "mass",
"activityU": 40,
"proteinMg": 5,
"activityPerMl": 250,
"proteinMgPerMl": 10,
"decimalPlaces": 2
}
}
}Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).
Questions or issues? Contact [email protected]