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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Micrococcus luteus
Category: In the normal flora
Etymology: Genus name: small coccus (seed, grain).
Species epithet: golden yellow.
Significance:  [Of minor importance]   
Alternative Species Name(s):Micrococcus lysodeikticus
Taxonomy:
Phylum
Actinomycetota
Class
Actinomycetia
Order
Micrococcales
Family
Micrococcaceae 
Genus
Micrococcus
Type Strain: ATCC 4698 = CCUG 5858 = NCTC 2665
Macromorphology (smell): Forms yellowish colonies with granular surface.
Micromorphology: Small cocci (0.5 to 3.5 µm in diameter), which are usually arranged in tetrads or irregular clusters.
Gram +/Gram -:G+
Metabolism: Aerobic
Catalase/Oxidase:+/+
Other Enzymes: Coagulase -
Spec. Char.:
Reservoir: Soil, dust, water and air.
Disease:May cause infections in immunocompromised individuals. May also cause food poisoning due to production of cadaverin, which potentiates the effect of histamine.
Hosts: Belongs to the normal bacterial flora on the skin of mammalians.
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
CP002790.1 NCTC 2665T 2 501 097 1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AJ536198 DSM 20030T 1418 
One of the operons seems to be split in one of the 16S rRNA genes.

Taxonomy/phylogeny:
 
The genus Micrococcus is composed of only one species, which is related to the genera Renibacterium and Dermatophilus.
Comment:There are three different biovars: I, II and III.
Updated:2023-03-02

News

New names of bacterial phyla

The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.

Published 2023-03-01. Read more...
The taxonomy of chlamydias

Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBact

Published 2023-03-15. Read more...

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