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. References External links Type strain of Mycobacterium alvei at BacDive - the Bacterial Diversity Metadatabase Acid-fast bacilli alvei Bacteria described in 1992 Actinomycetia