Update README.md

README.md

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 license: mit
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+This dataset is obtained from a [UniProt search](https://www.uniprot.org/uniprotkb?facets=proteins_with%3A9%2Cannotation_score%3A4&fields=accession%2Cprotein_families%2Cft_binding%2Cft_act_site%2Csequence%2Ccc_similarity&query=%28ft_binding%3A*%29+AND+%28family%3A*%29&view=table)
+for protein sequences with family and binding site annotations. The dataset includes unreviewed (TrEMBL) protein sequences as well as 
+reviewed sequences. We refined the dataset by only including sequences with an annotation score of 4. We sorted and split by family, where 
+random families were selected for the test dataset until approximately 20% of the protein sequences were separated out for test data. 
+We excluded any sequences with `<`, `>`, or `?` in the binding site annotations. We furthermore included any active sites that were not 
+listed as binding sites in the labels. We split any sequence longer than 1000 residues into non-overlapping sections of 1000 amino acids or 
+less after the train test split.