👉 Rubrobacteridae is a family of bacteria that includes the genus Rubrobacter, which belongs to the phylum Proteobacteria and the class Firmicutes. This family primarily consists of Gram-negative, rod-shaped bacteria with a single cell wall composed of cellulose and lignin. These bacteria are commonly found in soil, water, and various environments, including aquatic ecosystems, where they can produce harmful substances like hydrochloric acid or ammonia.