What is the morphology of Escherichia coli (E coli)?

Updated: Feb 11, 2019
  • Author: Tarun Madappa, MD, MPH; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The genus Escherichia is named after Theodor Escherich, who isolated the type species of the genus. Escherichia organisms are gram-negative bacilli that exist singly or in pairs. E coli is facultatively anaerobic with a type of metabolism that is both fermentative and respiratory. They are either nonmotile or motile by peritrichous flagella. E coli is a major facultative inhabitant of the large intestine.


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