Proteus hauseri

**Semantic type:** Bacterium

**Definition:** A species of facultatively anaerobic, Gram-negative, rod shaped bacteria assigned to the phylum Proteobacteria. This species is motile, indole, methyl red, and urease positive, oxidase, citrate, and lipase negative, nonpigmented, fermentative, reduces nitrate, produces acid from galactose, maltose and sucrose, and hydrolyzes gelatin, but not esculin. P. hauseri is part of the normal human and animal intestinal flora and is widespread in the environment, but can become pathogenic.

**Synonyms:** - PROTEUS HAUSERI