Symmetry

This node calculates the partition of heavy atoms in a CDK molecule into equivalent classes. The definition of equivalent classes is purely topological and the algorithm is derived from the algorithm by Hu, C.Y. and Xu, L., Algorithm for computer perception of topological symmetry, Analytical Chimica Acta, 1994, 295:127.

The node processes connected molecules only.

Options

Column with molecules
Select the column containing the molecular structure
Visualization only
Display the visual representation of the partitioning

Input Ports

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Table containing molecular structures

Output Ports

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As input but with new rows for each atom in the CDK molecule for which the signatures were calculated or just the visual representation of the partitioning if option selected

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Developers

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Installation

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

v5.9
Plugin provider: KNIME GmbH, Konstanz and EMBL-EBI, Cambridge
Plugin version: 1.5.700.v202511141653
On NodePit since: 2025-12-11
Last update: 2026-01-31
KNIME versions: v5.9, v5.8, v5.7, v5.6, v5.5, v5.4, v5.3, v5.2, v5.1, v4.7, v4.6, v4.5, v4.4, v4.3, v4.2, v4.1, v4.0, v3.7, v3.6

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