Update README.md

README.md

@@ -10,7 +10,13 @@ valid: 2569
 test: 2634
 
 ### Related paper 
-The dataset is from [Deep mutational scans of XBB.1.5 and BQ.1.1 reveal ongoing epistatic drift during SARSCoV-2 evolution](https://doi.org/10.1371/journal.ppat.1011901).
+The dataset is from [SignalP 6.0 predicts all five types of signal
+peptides using protein language models](https://www.nature.com/articles/s41587-021-01156-3).
 
 
-### Label
+
+### Label
+Each amino acid has 7 classes:
+
+S (0): Sec/SPI signal peptide | T (1): Tat/SPI or Tat/SPII signal peptide | L (2): Sec/SPII signal peptide |
+P (3): Sec/SPIII signal peptide | I (4): cytoplasm | M (5): transmembrane | O (6): extracellular