proteiniphilum proteiniphilum proteiniphilum is a gram-negative, obligately anaerobic, proteolytic and chemoorganotrophic genus from the family of dysgonomonadaceae. proteiniphilum scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: dysgonomonadaceae genus: proteiniphilumchen and dong 2005 species p. acetatigenes p. saccharofermentans synonyms peptophilum