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ChEMBLdb Connector

Node which fetches and tabulates information from the ChEMBL RESTful web services.

Users can look-up ChEMBL IDs representing compounds, assays or targets and retrieve tabulated information on them, in addition to the relevant bioactivity data. If a UNIPROT protein accession number is provided, this takes priority over ChEMBL IDs for doing target searches.

Alternatively an InChiKey can be provided to perform an exact structure search, or canonical SMILES to perform substructure or similarity searches against ChEMBL molecules (retrieves same information as a compound search).

NOTE: The tab clicked on determines the search used (so if the user closes the configuration dialog with the look-up tab in focus, a look-up search will be performed, and vice versa for compound searching).

Author: Edmund Duesbury (EBI Summer 2012).

Acknowledgements:

George Papadatos
Stephan Beisken

Options

Look-up Tab:

Specify a ChEMBL ID.
Choose whether to search for compounds, assays or (protein) targets. Note that the ChEMBL ID must be relevant to the search type (e.g. a ChEMBL ID that corresponds to a compound will throw an error on assay or target searches).
If a protein accession number is specified, this can only be used with target searches, and takes priority over a ChEMBL ID.
Tick the bioactivities checkbox to retrieve all the bioactivities for a ChEMBL ID.

Compound Search Tab:

Specify an InChIKey for an exact structure search.
Alternatively, canonical SMILES for substructure or similarity searches.
The Tanimoto coefficient threshold (%) for similarity searching must be between 70 and 100.

Input Ports

This node has no input ports

Output Ports

: Tabulated information from the ChEMBL database.

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Installation

To use this node in KNIME, install the extension EMBL-EBI Nodes for KNIME from the below update site following our NodePit Product and Node Installation Guide:

v3.6

Plugin provider: EMBL-EBI

Plugin version: 1.1.0.v201712111223

On NodePit since: 2019-06-25

Last update: 2026-01-08

KNIME versions: From v3.6 to v3.7

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