Automatic Ligand parameterization tutorial using BioExcel Building Blocks (biobb)
This tutorial aims to illustrate the process of ligand parameterization for a small molecule, step by step, using the BioExcel Building Blocks library (biobb). The particular example used is the Sulfasalazine protein (3-letter code SAS), used to treat rheumatoid arthritis, ulcerative colitis, and Crohn's disease.
OpenBabel and ACPype packages are used to add hydrogens, energetically minimize the structure, and generate parameters for the GROMACS package. With Generalized Amber Force Field (GAFF) forcefield and AM1-BCC charges.
Copyright & Licensing
This software has been developed in the MMB group at the BSC & IRB for the European BioExcel, funded by the European Commission (EU H2020 823830, EU H2020 675728).
- (c) 2015-2025 Barcelona Supercomputing Center
- (c) 2015-2025 Institute for Research in Biomedicine
Licensed under the Apache License 2.0, see the file LICENSE for details.

Version History
Version 7 (latest) Created 6th Aug 2025 at 08:51 by Genís Bayarri
Update to BioBB 5.1.*
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 Version-7
Version-7264d24f
    Version 6 Created 4th Mar 2024 at 14:20 by Genís Bayarri
Update to BioBB 4.1.*
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 Version-6
Version-6f2526d7
    Version 5 Created 26th Jul 2023 at 10:20 by Genís Bayarri
Fixed importlib_metadata bug
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 Version-5
Version-562173bf
    Version 4 Created 14th Apr 2023 at 08:51 by Genís Bayarri
Update to BioBB 4.0.*
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 Version-4
Version-4a3814ff
    Version 3 Created 15th Sep 2022 at 11:59 by Genís Bayarri
Update to BioBB 3.8.*. taken from Git commit 2a351bf
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 Version-3
Version-30e1ae08
    Version 2 Created 29th Jun 2021 at 08:40 by Robin Long
Updated to BioBB 3.6.0. Taken from Git commit 461262dae
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 Version-2
Version-2461262d
    Version 1 (earliest) Created 14th Sep 2020 at 11:01 by Robin Long
Initial Commit. Taken from Git commit c6cb736
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Created: 14th Sep 2020 at 11:01
Last updated: 6th Aug 2025 at 08:54
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