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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 gene name IMGT allele name Fct Chromosomal
localization
R T Pr IMGT/LIGM-DB locus reference sequences IMGT/LIGM-DB sequences from the literature
Breed Clone names Accession numbers Positions in the sequence
(J-GENE-UNIT)
Secondary accession numbers Breed Clone names Accession numbers Positions in the sequence
(J-GENE-UNIT)
IGKJ1 IGKJ1*01 ORF (1) 11 San Clemente IMGT000009 [1] 410369..410446
IGKJ2 IGKJ2*01 ORF (2) 11 San Clemente IMGT000009 [1] 410675..410747
IGKJ3 IGKJ3*01 F 11 San Clemente IMGT000009 [1] 411011..411087
IGKJ4 IGKJ4*01 ORF (3) 11 San Clemente IMGT000009 [1] 411327..411399
IMGT notes:
  1. (1) noncanonical J-HEPTAMER: tgttgtg instead of cactgtg.
  2. (2) noncanonical J-HEPTAMER: caccatg instead of cactgtg and noncanonical J-NONAMER: ggtatttgt instead of ggtttttgt.
  3. (3) noncanonical J-HEPTAMER: atctgtg instead of cactgtg.
IMGT references:
  1. [1] Schwartz J.C. et al. Immunogenetics 2018 May;70(5):317-326. doi: 10.1007/s00251-017-1033-3. Epub 2017 Oct 23. Free PMC Article. PMID: 29063126
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