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"+" or "-" indicates if the gene sequences have been found (+) or not been found (-) rearranged (R), 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 subgroup IMGT gene name IMGT allele name Fct R T Pr Positions in the locus IMGT/LIGM-DB reference sequences IMGT/LIGM-DB sequences from the literature
Isolate Clone names Accession numbers Positions in the sequence (D-GENE-UNIT) Secondary accession numbers Isolate Clone names Accession numbers Positions in the sequence (D-GENE-UNIT)
IGHD1 IGHD1 IGHD1*01 F Glennie NW_001794226 [1] complement(591892..591974)
IGHD2 IGHD2 IGHD2*01 F Glennie NW_001794226 [1] complement(590138..590220)
IGHD3 IGHD3 IGHD3*01 F Glennie NW_001794226 [1] complement(582639..582724)
IMGT references:
  1. [1] Warren,W.C. et al., Nature. 453(7192):175-183 (2008).
See also (IMGT Scientific chart):