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2.2 KiB
2.2 KiB
BRENDA Enzyme Database (SOAP API)
Important: BRENDA uses SOAP, not REST. Requires Python with zeep library.
SOAP Endpoint
https://www.brenda-enzymes.org/soap/brenda_zeep.wsdl
Auth
Free registration required at https://www.brenda-enzymes.org/register.php Credentials (email + SHA-256 hashed password) passed with every call.
Key SOAP Methods
All methods take email, password (SHA-256), and ecNumber as base parameters.
| Method | Description |
|---|---|
getKmValue |
Michaelis constant (Km) |
getTurnoverNumber |
Turnover number (kcat) |
getKcatKmValue |
Catalytic efficiency (kcat/Km) |
getKiValue |
Inhibition constant (Ki) |
getIc50Value |
IC50 values |
getSpecificActivity |
Specific activity |
getPhOptimum |
pH optimum |
getTemperatureOptimum |
Temperature optimum |
getSubstrate |
Substrates |
getProduct |
Products |
getInhibitors |
Inhibitors |
getCofactor |
Cofactors |
getOrganism |
Source organisms |
getReaction |
Reaction equations |
getSequence |
Protein sequences |
getDisease |
Associated diseases |
Parameter Syntax
fieldName*value format. Empty value = return all.
ecNumber*1.1.1.1 # Required: EC number
organism*Homo sapiens # Optional: filter by organism
substrate*ethanol # Optional: filter by substrate
kmValue* # Return field (empty = all)
Python Example
import hashlib
from zeep import Client
client = Client("https://www.brenda-enzymes.org/soap/brenda_zeep.wsdl")
email = "your@email.com"
password = hashlib.sha256("your_password".encode()).hexdigest()
# Get Km values for alcohol dehydrogenase
result = client.service.getKmValue(
email, password,
"ecNumber*1.1.1.1", "organism*Homo sapiens",
"kmValue*", "substrate*", "literature*"
)
Response Format
Returns string parsed with ! (record separator) and #/* (field separators). Must be parsed manually.
Rate Limits
No published limits. SOAP responses can take 1-5 seconds. Be respectful — free academic service.
Note for this skill
Since BRENDA uses SOAP (not REST), making calls requires writing and executing a Python script with zeep. Use Bash to run the script rather than WebFetch.