Before revision:  The specific characteristic of this approach is to give in a glance a description of the protein not lingering on the complex details of its biochemialc nature but instead privileging its activity .
After revision:  The specific characteristic of this approach is to give in a glance a description of the protein not lingering on the complex details of its biochemialc nature but instead privileging its activity. Proteotronics is here here applied to state a comparative analysis of the electrical responses coming from type-1 and type-2 opsins. In particular, the procedure is used as an early investigation of a recently discovered family of opsins, the proteorhodopsins activated by blue light, BPRs. The results reveal some interesting and unexpected similarities between proteins of the two families, suggesting the global electrical response are not strictly linked to the class identity .