Well, epitopes that bind with MHC are considered antigenic. my question is what is the need to predict antigenicity or allergenicity? I mean if we have predicted epitope data and we know that an epitope with binding affinity
First, there are factors other than binding affinity that affects antigenicity. As some people already pointed out, structure, homology, etc. affect it. In that context, the answer here is it is cheaper to predict and eliminate candidates than to eliminate candidates using high throughput screening, therefore there is a demand for an accurate (as much as possible) in silico approach to predict antigenicity