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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 Positions in the locus IMGT/LIGM-DB reference sequences IMGT/LIGM-DB sequences from the literature
Clone names Accession numbers Positions in the sequence Secondary accession numbers Clone names Accession numbers Positions in the sequence
IGKJ1 IGKJ1*01 F 3q12-q14 GU942438 [1] MAP CH242-227G10 FP312898 [2] MAP
CH242-221I5 CU694848 [2] MAP
IGKJ2 IGKJ2*01 F 3q12-q14 GU942438 [1] MAP
IGKJ2*02 F 3q12-q14 CH242-227G10 FP312898 [2] MAP CH242-221I5 CU694848 [2] MAP
IGKJ3 IGKJ3*01 F 3q12-q14 CH242-227G10 FP312898 [2] MAP CH242-221I5 CU694848 [2] MAP
IGKJ3*02 ORF (1) 3q12-q14 GU942438 [1] MAP
IGKJ4 IGKJ4*01 F 3q12-q14 GU942438 [1] MAP CH242-221I5 CU694848 [2] MAP
IGKJ4*02 F 3q12-q14 CH242-227G10 FP312898 [2] MAP
IGKJ5 IGKJ5*01 F 3q12-q14 GU942438 [1] MAP CH242-221I5 CU694848 [2] MAP
IGKJ5*02 F 3q12-q14 CH242-227G10 FP312898 [2] MAP

MAP: Mapped reference sequences.

IMGT notes:
  1. (1) non canonical DONOR-SPLICE (att instead of ngt)
IMGT references:
  1. [1] Butler J.E. et al.,J Immunol., 173, 6794-805 (2004). PMID: 15557173
  2. [2] Schwartz J.C. et al.,Immunogenetics, 64, 303-311 (2012). PMID: 22109540
See also (IMGT Scientific chart):