Proteus spp.

  • Douglas I. Johnson


  • Genomics:
    • Proteus mirabilis chromosome: 4,099,900 bp; 3685 predicted ORFs (Pearson et al. 2008)

    • Plasmid pHI4320: 36,289 bp; 55 predicted ORFs

  • Cell morphology:
    • Rod-shaped cells (Fig. 24.1)

    • Changes morphology to polyploid elongated swarmer cells on solid surfaces:
      • “Bull’s-eye pattern” due to differentiation changes (Fig. 24.2)

  • Gram stain:
    • Gram negative

  • Growth:
    • Facultative anaerobes; catalase positive

    • Few peritrichous flagella in liquid; hyper-flagellation in swarmer cells on solid surfaces

    • Normal microbiota of human intestinal tract; also found in soil, water, hospitals, and long-term care facilities

    • Three pathogenic species:
      • Proteus mirabilis: ~80 % of infections

      • Proteus vulgaris

      • Proteus penneri


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Douglas I. Johnson
    • 1
  1. 1.Department of Microbiology & Molecular GeneticsUniversity of VermontBurlingtonUSA

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