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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 T Pr Positions in the locus IMGT/LIGM-DB reference sequences IMGT/LIGM-DB sequences from the literature
Strain Clone names Exons Accession numbers Positions in the sequence Secondary accession numbers Strain Clone names Accession numbers Positions in the sequence
IGHA1 IGHA1*01 F Ig alpha-1 CH1 X53708 [2] X53387 [1] (2)
H+CH2 (1) X53708 [2] X53387 [1] (2)
CH3 (including CHS) X53708 [2]
M
IGHA1*02 F Ig alpha-1 CH1 X53386 [1] (2)
H+CH2 (1) X53386 [1] (2)
CH3 (including CHS)
M
IGHA2 IGHA2*01 F Ig alpha-2 CH1 X53709 [2] X53388 [1] (2)
H+CH2 (1) X53709 [2] X53388 [1] (2)
CH3 (including CHS) X53709 [2]
M
IMGT notes:
  1. (1) In the IGHA gene, the hinge (H) and CH2 are joined in a single exon.
  2. (2) Partial C-GENE: CH2 partial in 3'.
IMGT references:
  1. [1] Kawamura S. et al., J. Mol. Biol., 215, 201-206 (1990). PMID: 2120447
  2. [2] Kawamura S. et al., Mol. Biol. Evol., 8, 743-752 (1991). PMID: 1775062
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