Escherichia coli
- E. coli
- gram-
- facultative aerboic
- rod-shaped
- coliform
- found in lower intestine of warm-blooded
- most strains harmless
- some cause food poison
- part of normal microbiota
- can produce vitamin K2
- symbiotic relationship
-
fecal expulsion
-
0.1% of gut microbiota
- fecal-oral transmission
- survive outside for limited time
- indicator organisms
-
persistent E. coli grow outside a host
-
can be cultured easily
- chemoheterotroph
- most widely studied prokaryotic model
- important in
- biotechnology
- microbiology
- host organism for recombinant DNA
- reproduces within 20 min