Protein Segment Variability Explorer is a length based variability estimator of proteins with added graphically comparable chemical and biological feature like: solvent accessibility, epitopic potential and coevolutionary properties (right-side submission zone with specific virus and protein selectors). This server also includes a pR value calculator for a single protein or protein segment (left side calculator box). pR value, (ref) which is the number representation of a protein segment and it's variability, is the theory behind this calculator.

Protein Segment Variability Plot