Immunoglobulins (IG), T cell receptors (TR) and major histocompatibility (MH) appeared in the early jawed vertebrates about 450 millions years ago. These complex gene families are responsible of the specific (or adaptive) immune response in vertebrates.
The IMGT taxonomy tree describes the classification of the vertebrate species present in IMGT/LIGM-DB the largest IMGT database, and in the other IMGT databases, Web ressources and tools, according to the NCBI taxonomy (1).
All levels of classification shown in the trees (except the ones in dotted rectangles) can be
queried in the Taxonomy module of IMGT/LIGM-DB.
Most species English names can also be queried.
Click on yellow rectangles to see the IMGT taxonomy detailed trees.
IMGT taxonomy detailed trees
|Vertebrata||→ Chondrichthyes (cartilaginous fishes)|
|→ Actinopterygii (ray-finned fishes)||→ Euteleostei|
|→ Tetrapoda (tetrapods)||→ Eutheria (placentals)||→ Rodentia (rodents)|
Exceptionally, non-vertebrate sequences have been entered in IMGT-LIGM-DB. There are :
|(1)||For vertebrates with IG, TR and MH (that is jawed vertebrates or Gnathostomata):
Go to the "The taxonomy browser" page.
In "Query", tape "Vertebrata".
Start Search. Then click on "Gnathostomata".