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"+" or "-" indicates if the gene sequences have been found (+) or not been found (-) transcribed (T) and/or translated into protein (Pr). Arbitrarily that information is shown on the first line of each gene when the data have been confirmed by several studies.

Functionality is shown between parentheses, (F) and (P), when the accession number refers to rearranged genomic DNA or cDNA and the corresponding germline gene has not yet been isolated.
Functionality is shown between brackets, [F] and [P], when the accession number refers to genomic DNA, but not known as being germline or rearranged.

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IMGT gene name IMGT allele name Fct Chromosomal localization T Pr Positions in the locus IMGT/LIGM-DB reference sequences IMGT/LIGM-DB sequences from the literature
Clone names Exons Accession numbers Positions in the sequence Secondary accession numbers Clone names Accession numbers Positions in the sequence
TRBC1 TRBC1*01 F 7q34 Cbeta1 EX1 M12887 [1] Cbeta1 M14157 [2]
EX2 M12887 [1] Cbeta1 M14157 [2]
EX3 M12887 [1] Cbeta1 M14157 [2]
EX4 M12887 [1] Cbeta1 M14157 [2]
TRBC1*02 F 7q34 Cbeta1 EX1 L36092 [3] (1) Cbeta1 U66061 [3] (1)
EX2 L36092 [3] (1) Cbeta1 U66061 [3] (1)
EX3 L36092 [3] (1) Cbeta1 U66061 [3] (1)
EX4 L36092 [3] (1) Cbeta1 U66061 [3] (1)
TRBC2 TRBC2*01 F 7q34 Cbeta2 EX1 M12888 [1] Cbeta2 M12510 [2]
EX2 M12888 [1] Cbeta2 M12510 [2]
EX3 M12888 [1] Cbeta2 M12510 [2]
EX4 M12888 [1] Cbeta2 M12510 [2]
TRBC2*02 F 7q34 Cbeta2 EX1 L36092 [3] (1) Cbeta2 U66061 [3] (1)
EX2 L36092 [3] (1) Cbeta2 U66061 [3] (1)
EX3 L36092 [3] (1) Cbeta2 U66061 [3] (1)
EX4 L36092 [3] (1) Cbeta2 U66061 [3] (1)
IMGT notes:
  1. (1) The original L36092 sequence (684973 bp) has been split in EMBL into three sequences of 267156 bp (U66059), 215422 bp (U66060) and 232650 bp (U66061), L36092 has become secondary accession number of U66059, U66060 and U66061. In IMGT, the original sequence L36092 which is fully annotated has also been kept as primary accession number, in addition to U66059, U66060 and U66061.
IMGT references:
  1. [1] Tunnacliffe, A. et al., Proc. Natl. Acad. Sci. USA., 82, 5068-5072 (1985). PMID: 3860845
  2. [2] Toyonaga, B. et al., Proc. Natl. Acad. Sci. USA., 82, 8624-8628 (1985). PMID: 3866244
  3. [3] Rowen, L. et al., Science, 272, 1755-1762 (1996). PMID: 8650574
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