Properties Proteus mirabilis Proteus vulgaris Colony characteristics in MacConkey Agar With further testing by spot indole, the positive isolates may be presumptively reported as Proteus vulgaris and the negative ones as Proteus mirabilis. Organisms that swarm on 5% sheep blood agar, exhibit a characteristics odor, and are oxidase negative can be presumptively identified as Proteus spp. Stag (male deer) and Staghorn calculi ( source) Biochemical Properties of Proteus mirabilis and Proteus vulgaris Recurrent urinary tract infections with a urease-producing organism (mostly Proteus species) results in formation of staghorn calculi in the kidney. The ammonia produce after the breakdown of the urea results in struvite (magnesium ammonium phosphate) stone formation. Urease enzyme produced by Proteus species is thought to play a major role in the production of infection-induced urinary stones. Deaminates phenylalanine to phenyl pyruvic acid.Ferments glucose but does not ferment lactose.These Proteus strains are used in an agglutination test (the Weil-Felix test) for serum antibodies produced against rickettsiae of the typhus and spotted fever groups. The bacilli possess thermostable, вЂOвЂ™ (somatic) and thermostable вЂHвЂ™ (flagellar) antigens, based upon which several serotypes have been recognized.Д¬ertain strains of Proteus vulgaris(OX-19, OX-2, and OX-K) produce O antigens that are shared by some rickettsiae. 2.4 Identification: Antigenic characteristics.

2.2 Laboratory Diagnosis & Identification.

2.1 Biochemical Properties of Proteus mirabilis and Proteus vulgaris.

Proteus ox-19