Cross Index

Helicobacter

SuperSet

Prokaryote, Eubacteria ,Gram negative Vibriods

Compare

Alteromonas, Aquaspirillum, Azospirillum , Bdellovibrio, Campylobacter
Cellvibrio mixtus , Halovibrio variabilis , Helicobacter, Herbaspirillum seropedicae, Marinomonas, Micavibrio admirandus
Oceanospirillum, Spirillum, "Sporospirillum", Vampirovibrio chlorellavorus ,Wolinella

Contrast

Archaea,

Subset

  

 

Morphology Helicobacter
CELLULAR  
Staining Gram-negative
Morphology helical, curved or straight rods 0.5-10 microns by 2.5-5.0 microna
Motility Motile by multiple sheathed flagella that are unipolar, or bipolaral and lateral with terminal bulbs
Specialized structures A glycocalyx is produced in shaken broth cultures
Division  
COLONIAL  
Solid surface Growth after 2-5 days on Brain-Heart-infusion agar or chocolate agar. Non pigimented, translucent colonies are 1-2 mm in diameter
Liquid slow growth in liquid unleass medium is shaken

 

Growth Parameters Helicobacter
PHYSIOLOGICAL  
Tropism  
Oxygen microaerophilic, Variable growth under 10% carbon doxide or anaerobic conditions.
pH  
Temperature optimum 37 C, no growth at 25 C, variable growth at 42 C
Requires  
Produces MK-6 is the major isoprenoid quinone.
Enzymes catalase positive, oxidase positive, urease positive, alkaline phosphatase, gamma-glutamyltransferase. nitrate not reduced, hippurate hydrolysis is variable, hydrogen sulfide prodcution is negative on TSI but varible on lead acetate paper
Unique features  
ENVIRONMENTAL  
Habitat gastic mucosa of primates and ferrets
Lifestyle  
Pathogenicity may be associated with gastritis and peptic ulcers
Distribution  
Genome Helicobacter
G+C Mol %  
   

 

Reference Helicobacter
First Cited Goodwin et al 1989 IJSB 39: 397-405
The Prokaryotes p
Bergey's Determinative p 42
References