Under the superficial dichotomy pathogen and allergen are two manifestations of same immune activation and...

Pathogens and allergens are deemed as two contrasting facets of host immune status, deficiency and exuberant. In silico domain analysis of a diverse panel of pathogen and allergen proteins has revealed the shortcoming of this notion. Both the pathogen and allergen proteins elicit immune activation, with the outcome of immune agitation depending on the pathogen strain, allergen exposure duration, and host factors. Pathogens can replicate within the host and constantly irritate the immune system, leading to blood coagulation, respiratory collapse and death. Allergens, being non-viable, can only provoke the immune system transiently; however, depending on the allergen dose and extent exposed to, inflammation and fatality can occur. In silico analysis of pathogen and allergen proteins showed the conserved domains to be AAA, WR1, VKc, Kelch, Hr1, HAMP, HELICc, Dak2, CHAD, CHASE2, Galanin, PKS_TE, Robl_LC7, Excalibur, DISIN, etc. This exciting discovery can have far-reaching effects in drug target identification approaches.