Update README.md

README.md

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 ### Performance
 
+The antibody/nanobody-antigen data was curated from recently released PDBs, 
+specifically those released after September 30, 2021 (the snapshot date for training). 
+We also assessed the quality of the selected structures to ensure the interfaces are valid. 
+For instance, the binding sites are typically located in the complementarity-determining regions (CDRs) for 
+antibody-antigen or nanobody-antigen complexes. 
+Additionally, we examined the distance map between the heavy chain and light chain to confirm that 
+the selected chain pair constitutes a valid antibody.
+
 
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 ## License and Disclaimer  
 
 This project is under the GenBio AI Community License (also ModelGenerator's license). For commercial use, please contact us.