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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 subgroup 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
(L-V-GENE-UNIT)
Secondary accession numbers Breed Clone names Accession numbers Positions in the sequence
(L-V-GENE-UNIT)
IGKV2 IGKV2-4 IGKV2-4*01 F 17 Boxer IMGT000002 [1] 87158..87912
IGKV2-5 IGKV2-5*01 F 17 Boxer IMGT000002 [1] 75873..76625
IGKV2-6 IGKV2-6*01 F 17 Boxer IMGT000002 [1] 68771..69523
IGKV2-7 IGKV2-7*01 F 17 Boxer IMGT000002 [1] 56060..56582
IGKV2-8 IGKV2-8*01 F 17 Boxer IMGT000002 [1] 37197..37951
IGKV2-9 IGKV2-9*01 F 17 Boxer IMGT000002 [1] 22655..23407
IGKV2-10 IGKV2-10*01 F 17 Boxer IMGT000002 [1] 12912..13663
IGKV2-11 IGKV2-11*01 F 17 Boxer IMGT000002 [1] 579..1341
IGKV2S12 IGKV2S12*01 P (1) 17 Boxer IMGT000002 [1] complement(347792..348587)
IGKV2S13 IGKV2S13*01 F 17 Boxer IMGT000002 [1] complement(342363..343094)
IGKV2S14 IGKV2S14*01 P (2) 17 Boxer IMGT000002 [1] complement(328452..329253)
IGKV2S16 IGKV2S16*01 F (5) 17 Boxer IMGT000002 [1] complement(290512..291477)
IGKV2S18 IGKV2S18*01 P (3) 17 Boxer IMGT000002 [1] complement(232691..233437)
IGKV2S19 IGKV2S19*01 F 17 Boxer IMGT000002 [1] complement(216723..217470)
IGKV3 IGKV3-3 IGKV3-3*01 P (1) 17 Boxer IMGT000002 [1] complement(100756..101461)
IGKV3S1 IGKV3S1*01 F 17 Boxer IMGT000002 [1] complement(306993..307546)
IGKV3S2 IGKV3S2*01 P (1) 17 Boxer IMGT000002 [1] complement(267077..267458)
IGKV4 IGKV4S1 IGKV4S1*01 F 17 Boxer IMGT000002 [1] 283564..284140
IGKV4-1 IGKV4-1*01 ORF (4) 17 Boxer IMGT000002 [1] complement(112175..112788)
IGKV7 IGKV7-1 IGKV7-1*01 P (1) 17 Boxer IMGT000002 [1] complement(103821..104447)
IGKV(II)-1 IGKV(II)-1 IGKV(II)-1*01 P (1) 17 Boxer IMGT000002 [1] 241470..241962
IMGT notes:
  1. (1) Frameshifts in V-REGION.
  2. (2) STOP CODON in L-PART1.
  3. (3) L-PART2 ACCEPTOR-SPLICE defect ('nag|n' instead of 'nag|nn').
  4. (4) Noncanonical V-HEPTAMER: tgcagtg instead of cacagtg.
  5. (5) Owing to a non-functional L-PART1 at the expected position (very short and recombined to a repeated sequence), the IGHV2S16 was first defined as pseudogene. However the IGHV2S16 gene has been found in rearranged transcripts (e.g., DN269560, DN271670), in which a functional L-PART1, located 424 bp upstream of the defectuous one, is correctly spliced to L-PART2. For that reason, the functionality of the IGHV2S16 has been changed from pseudogene (P) to functional (F) (J. Martin, G. Folch, M.-P. Lefranc, 25/09/16)
IMGT references:
  1. [1] Martin J. et al. Immunogenetics. 2017 Sep 19. doi: 10.1007/s00251-017-1028-0. PMID: 28924718
See also (IMGT Scientific chart):