title: Mycolicibacterium alvei
text: # Mycolicibacterium alvei
  
  Mycolicibacterium alvei is a species of the phylum Actinomycetota (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus Mycolicibacterium.
  
  ## Description
  
  Gram-positive, nonmotile and acid-fast rods (1–3 µm × 0.5–0.7 µm).
  
  Colony characteristics
  
  * Colonies are eugonic, rough and nonpigmented.
  
  Physiology
  
  * Colonies occur within 5 days at 30 °C (optimum temperature, no growth at 45 °C) on Löwenstein–Jensen medium and on Middlebrook 7H10 agar.
  * The type strain is resistant to D-cycloserine, streptomycin, isoniazid, rifampin, and thiacetazone
  * The type strain is susceptible to kanamycin, capreomycin and high levels of isoniazid.
  
  Differential characteristics
  
  * Differentiation from all other mycobacterial species by its unusual mycolate pattern.
  
  ## Pathogenesis
  
  * Not associated with disease.
  * Biosafety level 1
  
  ## Type strain
  
  First isolated from water samples, from soil and human sputum samples in Spain.
  
  