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TRDV genes are designated by a number for the subgroup followed, whenever there are several genes belonging to the same subgroup, by the letter S and a number for their relative localization in that representation.
TRDV gene names with a hyphen followed by a number correspond to genes with identical V-REGION sequences.

TRAJ genes are designated by a number according to their localization from 3' to 5' in the locus.

TRAV genes have not been found, so they are not represented in that locus representation.

Bovine (Bos taurus) TRA/TRD locus on chromosome 10

Locus representation bovine TRA/TRD

Colors are according to IMGT color menu for genes.
The boxes representing the genes are not to scale. Exons are not shown.
A double slash // indicates a gap in genome assembly. Distances in bp (base pair) or in kb (kilobase) associated with a double slash are taken into account in the length of the lines and included in the numbers displayed at the right end of the lines.
A dotted line ... indicates the distance in kb (kilobase) between the locus and its bornes (5' borne and the most 5' gene in the locus and/or 3' borne and the most 3' gene in the locus) on the top and bottom lines, respectively. These distances are not represented at scale and are not included in the numbers displayed at the right ends of these two lines.

The relative position of the clones containing the Bos taurus TRDV genes and their orientation in the locus are still unknown.
Therefore, for these clones, 5' and 3' refer to the 5'->3' DNA strand orientation.

In contrast, for clone Btau3.1_Chr10.30 (that contains the TRDD, TRDJ, TRDC, TRDV4, TRAJ and TRAC genes)
5' and 3' refer to the orientation in the Bos taurus TRA/TRD locus, by homology with the Homo sapiens and Mus musculus TRA/TRD loci.

Arrows indicate transcriptional orientation of the TRDV genes:
- for TRDV4, in the Bos taurus TRA/TRD locus
- for the other TRDV genes, in their clone sequences.

IMGT references:
  1. [1] Herzig, C.T. et al., BMC Genomics, 11, 100-100 (2010). PMID: 20144200
  2. [2] Herzig, C.T. et al., Immunogenetics, 58, 746-757 (2006). PMID: 16896832
  3. [3] Reinink, P. et al., Immunogenetics, 61, 541-549 (2009). PMID: 19568741
  4. [4] Van Rhijn, I. et al., Mol Immunol., 44, 3155-3161 (2007). PMID: 17418895
  5. [5] Blumerman, S.L. et al., Immunogenetics, 58, 680-692 (2006). PMID: 16799810
  6. [6] Hein, W.R. et al., Immunology, 91, 58-64 (1997). PMID: 9203966
More information:
  • Bovine (Bos taurus) germline sequences were extracted from The Bovine Genome Database, Assembly 3.1 (Btau3.1), based on [1].
  • The localization of the sequences in the Btau3.1 project is indicated in the accession number after the underscore.
  • Sequences were annotated and entered in IMGT/LIGM-DB and flat files were generated by IMGT®.
Last updated:
Amandine Lacan and Marie-Paule Lefranc
Chantal Ginestoux