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Citing this page:
Piccinni B. et al., BMC Genomics, 16:709 (2015) PMID: 26383271

Sheep (Ovis aries) TRA/TRD locus on chromosome 7

The genomic organisation of the sheep TRA/TRD locus on chromosome 7 is deduced from the genome assembly Oar_v3.1.

The unplaced genomic scaffolds NW_004080312, NW_004084646 and NW_004084647 are inserted in the map in a potential localization.
The diagram shows the position of all related and no-related TRA/TRD genes according to nomenclature.
Arrows indicate transcriptional orientation of the V genes.
The arrow above the line of the TRAJ genes indicates the 80 kb region that has been magnified in the lower part of the figure.

New genes have been identified by IMGT (not shown in the representation below):

  • On chromosome 7:
    • TRAV9S3 F (between TRAV43S3 and TRAV14S2)
    • TRAV23S5 P (between TRDV1S26 and TRAV22S1)
    • TRAV42S4 F (between TRAV22S1 and TRAV21-1)
    • TRAV43S6 P (between TRAV43S2 and TRAV8-1)
    • TRDV1S26 P (between TRDV1S1 and TRAV23S5)
    • TRAV9S4 F (between TRAV25S1 and TRAV43S4)
    • TRAV24S1 F (between TRAV25S1 and TRDV1S2)
    • TRAV23S8 F (between TRDV1S2 and TRDV1S1)
    • TRDV2S2 F (between TRDD1 and TRDV3-1)
    • TRAV40S1 P (between TRAV39-1 and TRAV38-1)
    • TRDV2S3 P (between TRAV28S1 and TRAV34S2)
    • TRAV34S2 P (between TRDV2S3 and TRAV26S1)
    • TRDV1S27 P (between TRAV26S1 and TRAV29S1)
    • TRAV23S6 P (between TRDV1S10 and TRDV1S9)
    • TRAV23S7 P (between TRDV1S9 and TRAV44S3)
    • TRAV11S1 ORF (between TRAV16S1 and TRAV43S4)
  • On unplaced genomic scaffolds:
    • TRAV9S5 P (NW_004081794)
    • TRAV22S7 P (NW_004082010)
    • TRAV23S4 P (NW_004081259)
    • TRAV42S5 P (NW_004082010)

Locus representation sheep TRA/TRD

Colors are according to IMGT color menu for genes.
The boxes representing the genes are not to scale. Exons are not shown.

The sheep (Ovis aries) TRA/TRD locus representation is Fig. 1 from
Barbara Piccinni, Serafina Massari, Anna Caputi Jambrenghi, Francesco Giannico, Marie-Paule Lefranc, Salvatrice Ciccarese, and Rachele Antonacci.
Sheep (Ovis aries) T cell receptor alpha (TRA) and delta (TRD) genes and genomic organization of the TRA/TRD locus.
BMC Genomics. 2015; 16: 709. doi: 10.1186/s12864-015-1790-z. Free PMC Article. PMID: 26383271.

The figure was kindly provided by Salvatrice Ciccarese.

IMGT references:
  1. [1] Piccinni B. et al., BMC Genomics, 16:709 (2015). PMID: 26383271