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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
IGHM IGHM*01 (F) CH1 AF437738 [1] c(s)
CH2 AF437738 [1] c(s)
CH3 (1) AF437738 [1] c(s)
CH4 (1) AF437738 [1] c(s)
IGHM*02 (F) CH1 AF437740 [1] c(s) AF437741 [1] c(s)
AF437739 [1] (2) c(m)
CH2 AF437740 [1] c(s) AF437741 [1] c(s)
AF437739 [1] (2) c(m)
CH3 (1) AF437740 [1] c(s) AF437741 [1] c(s)
CH4 (1) AF437740 [1] c(s)
M1 (1) AF437739 [1] (2) c(m)
M2 AF437739 [1] (2) c(m)

c: cDNA sequence.
(s): Trancript of a secreted chain.
(m): Trancript of a membrane chain.

IMGT notes:
  1. (1) As in other Teleostei, CH3 is spliced to CH4 in secretory mu cDNA, whereas it is probably spliced to the M1 exon in membrane mu cDNA.
  2. (2) CH2 is spliced with an undetermined region upstream the M1 exon, CH3 is absent.
IMGT references:
  1. [1] Ota T. et al., J. Exp. Zool. 295B: 45-58 (2003). PMID:12548542
Created:
05/09/2002
Last updated:
22/09/2023
Authors:
Nathalie Bosc