Update README.md

README.md

@@ -21,6 +21,11 @@ ChemBL comprises of drug-like bioactive molecules, 10,261 ChEMBL ids with their
   <img src="https://raw.githubusercontent.com/IBM/otter-knowledge/main/assets/ubckg_example.jpg" alt="Example of UBC"/>
 </div>
 
+**Original datasets:**
+- Uniprot: The UniProt Consortium. UniProt: the Universal Protein Knowledgebase in 2023. Nucleic Acids Research, 51(D1):D523–D531, 11 2022. ISSN 0305-1048. doi: 10.1093/nar/gkac1052. URL https://doi.org/10.1093/nar/gkac1052
+- BindingDB: Tiqing Liu, Yuhmei Lin, Xin Wen, Robert N Jorissen, and Michael K Gilson. Bindingdb: a web-accessible database of experimentally determined protein–ligand binding affinities. Nucleic acids research, 35(suppl_1):D198–D201, 2007.
+- ChemBL: Anna Gaulton, Louisa J. Bellis, A. Patricia Bento, Jon Chambers, Mark Davies, Anne Hersey, Yvonne Light, Shaun McGlinchey, David Michalovich, Bissan Al-Lazikani, and John P. Overington. ChEMBL: a large-scale bioactivity database for drug discovery. Nucleic Acids Research, 40(D1):D1100–D1107, 09 2011. ISSN 0305-1048. doi: 10.1093/nar/gkr777. URL https://doi.org/10.1093/nar/gkr777
+
 **Paper or resources for more information:**
 - [GitHub Repo](https://github.com/IBM/otter-knowledge)