Rank: Genus
Lineage: Bacteria;Proteobacteria;Gammaproteobacteria;Enterobacterales;Morganellaceae;Proteus
Description: Proteus also refers to a genus of Gram-negative Proteobacteria, some of which are opportunistic human pathogens known to cause urinary tract infections, most notably. Proteus mirabilis is one of these and is most referenced in its tendency to produce "stag-horn" calculi composed of struvite (magnesium ammonium phosphate) that fill the human renal pelvis.
Reference Material:
https://en.wikipedia.org/wiki/Proteus