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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
IGHA IGHA*01 F Ig alpha CH1 X53704 [2] X53385 [1] (2)
H+CH2 (1) X53704 [2] X53385 [1] (2)
CH3(including CHS) X53704 [2]
M
IGHE IGHE*01 F IgE CH1 M15399 [3]
CH2 M15399 [3]
CH3 M15399 [3]
CH4(including CHS) M15399 [3]
M1
M2
IGHG1 IGHG1*01 F IGHG1 CH1 AF300428 [4] (2)
H AF300428 [4] (2)
CH2 AF300428 [4] (2)
CH3(including CHS)
M1
M2
IGHG1*02 F IGHG1 CH1 AF300429 [4] (2)
H AF300429 [4] (2)
CH2 AF300429 [4] (2)
CH3(including CHS)
M1
M2
IGHG2 IGHG2*01 F IGHG2 CH1 AF300426 [4] (2)
H AF300426 [4] (2)
CH2 AF300426 [4] (2)
CH3(including CHS)
M1
M2
IGHG2*02 F IGHG2 CH1 AF300427 [4] (2)
H AF300427 [4] (2)
CH2 AF300427 [4] (2)
CH3(including CHS)
M1
M2
IGHG3 IGHG3*01 F IGHG3 CH1 AF300452 [4] (2)
H1 AF300452 [4] (2)
H2 AF300452 [4] (2)
H3 AF300452 [4] (2)
CH2 AF300452 [4] (2)
CH3(including CHS)
M1
M2
IGHG3*02 F IGHG3 CH1 AF300453 [4] (2)
H1 AF300453 [4] (2)
H2 AF300453 [4] (2)
H3 AF300453 [4] (2)
CH2 AF300453 [4] (2)
CH3(including CHS)
M1
M2
IGHG3*03 F IGHG3 CH1 AF300451 [4] (2)
H1 AF300451 [4] (2)
H3 AF300451 [4] (2)
CH2 AF300451 [4] (2)
CH3(including CHS)
M1
M2
IMGT notes:
  1. (1) In the IGHA gene, the hinge (H) and CH2 are joined in a single exon.
  2. (2) Partial C-GENE: CH1 is partial in 5' and CH2 is 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
  3. [3] Sakoyama Y. et al., Proc. Natl. Acad. Sci. U.S.A., 84, 1080-1084 (1987). PMID: 3103123
  4. [4] Fortenfant F. et al., Unpublished (2002).
See also (IMGT Scientific chart):