KNIME node which launches a web browser with a molecule viewer powered by NGL.

If you are using KNIME workflows with large molecules and you want to view them in 3D then the molviewer nodes are able to handle this.

Provides cheminformatics trying to model proteins within KNIME a way to view them
Adds nodes to KNIME to visualize proteins, small molecules and pharmacophores
Adds support to KNIME to handle viewing big molecules
Used to compare pharmacophore generation tools
Used to check ligand repurposing

This project uses a web user interface based on https://github.com/3D-e-Chem/molviewer-tsx .

Installation

Requirements:

KNIME, https://www.knime.org, version 4.0 or higher

Steps to get the MolViewer KNIME node inside KNIME:

Goto Help > Install new software ... menu
Press add button
Fill text fields with https://3d-e-chem.github.io/updates
Select --all sites-- in work with pulldown
Select the node called MolViewer nodes for KNIME
Install software
Restart KNIME

Usage

Create a new KNIME workflow.
Find node in Node navigator panel under Community Nodes > 3D-e-Chem > Molviewer.
Drag node to workflow canvas.
Give molviewer nodes Proteins, Ligands and/or Pharmacophores as input.
Open the view of the molviewer node, this will launch a web browser with the molecules visualized.
In web browser you can
- Rotate/translate/zoom molecules with mouse
- Toggle which molecules are visible
- Transmit visible molecules as HiLite selection back to KNIME or do the reverse from KNIME to molviewer
- and more

See example workflow in examples/ directory.

Build

mvn verify

An Eclipse update site will be made in p2/target/repository repository. The update site can be used to perform a local installation.

Development

Steps to get development environment setup based on https://github.com/knime/knime-sdk-setup#sdk-setup:

Install Java 8
Install Eclipse for RCP and RAP developers
Configure Java 8 inside Eclipse Window > Preferences > Java > Installed JREs
Import this repo as an Existing Maven project
Activate target platform by going to Window > Preferences > Plug-in Development > Target Platform and check the KNIME Analytics Platform (4.0) - nl.esciencecenter.e3dchem.knime.molviewer.targetplatform/KNIME-AP-4.0.target target definition.
A KNIME Analytics Platform instance can be started by right clicking on the targetplatform/KNIME\ Analytics\ Platform.launch file and selecting Run As → KNIME Analytics Platform. The KNIME instance will contain the target platform together with all extensions defined in the workspace.

During import the Tycho Eclipse providers must be installed.

Web interface

The web interface in the plugin/src/main/java/js-lib/molviewer directory. Is a distribution from the https://github.com/3D-e-Chem/molviewer-tsx repository.

Tests

Tests for the node are in tests/src directory. Tests can be executed with mvn verify, they will be run in a separate KNIME environment. Test results will be written to test/target/surefire-reports directory.

Workflow tests

See https://github.com/3D-e-Chem/knime-testflow#3-add-test-workflow

New release

Update versions in pom files with mvn org.eclipse.tycho:tycho-versions-plugin:set-version -DnewVersion=<version>-SNAPSHOT command.
Commit and push changes
Create package with mvn package, will create update site in p2/target/repository
Test node by installing it from local update site
Append new release to an update site
Make clone of an update site repo
Append release to the update site with mvn install -Dtarget.update.site=<path to update site>
Add files, commit and push changes of update site repo.
Create a Github release
Update Zenodo entry, fix authors
Make nodes available to 3D-e-Chem KNIME feature by following steps at https://github.com/3D-e-Chem/knime-node-collection#new-release
Update DOI in CITATION.cff

Technical architecture

The nodes are implemented as Dynamic JavaScript nodes also known as a org.knime.dynamic.node.generation.dynamicNodes extension.

The viewer has two way binding for the molecule visibility.

This project uses Eclipse Tycho to perform build steps.

3D-e-Chem/knime-molviewer