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IMGT reference sequences in FASTA format:

Nucleotide sequences without gaps

The FASTA header contains:
IMGT accession number | gene and allele name | species | functionality | exon name | domain name | domain type | alternative splicing (if it is) | partial (if it is) 
>CQ789650|VSIG4*01|Mus musculus|F|EX1|
atggagatctcatcaggcttgctgttcctgggccacctaatagtgctcacctatg
>CQ789650|VSIG4*01|Mus musculus|F|EX2|[D1]|V-LIKE|
gccaccccaccctaaaaacacctgagagtgtgacagggacctggaaaggagatgtgaaga
ttcagtgcatctatgatcccctgagaggctacaggcaagttttggtgaaatggctggtaa
gacacggctctgactccgtcaccatcttcctacgtgactccactggagaccatatccagc
aggcaaagtacagaggccgcctgaaagtgagccacaaagttccaggagatgtgtccctcc
aaataaataccctgcagatggatgacaggaatcactatacatgtgaggtcacctggcaga
ctcctgatggaaaccaagtaataagagataagatcattgagctccgtgttcggaaat
>CQ789650|VSIG4*01|Mus musculus|F|EX3|
ataatccacctagaatcaatactgaagcacctacaaccctgcactcctctttggaag
>CQ789650|VSIG4*01|Mus musculus|F|EX4|
caacaactataatgagttcaacctctgacttgaccactaatgggactggaaaacttgagg
agaccattgctggttcag
>CQ789650|VSIG4*01|Mus musculus|F|EX5|
ggaggaacctgccaatctttgccataatcttcatcatctccctttgctgcatagtagctg
tcaccataccttatatcttgttccgctgcaggacattccaacaag
>CQ789650|VSIG4*01|Mus musculus|F|EX6|
agtatgtctatggagtgagcag
>CQ789650|VSIG4*01|Mus musculus|F|EX7|
ggtgtttgccaggaagacaagcaactctgaagaaaccacaagggtgactaccatcgcaac
tgatgaaccagattcccaggctctgattagtgactactctgatgatccttgcctcagcca
ggagtaccaaataaccatcagatcaacaatgtctattcctgcctgc
>VSIG4*01|Mus musculus|F|EX1-7|
atggagatctcatcaggcttgctgttcctgggccacctaatagtgctcacctatggccac
cccaccctaaaaacacctgagagtgtgacagggacctggaaaggagatgtgaagattcag
tgcatctatgatcccctgagaggctacaggcaagttttggtgaaatggctggtaagacac
ggctctgactccgtcaccatcttcctacgtgactccactggagaccatatccagcaggca
aagtacagaggccgcctgaaagtgagccacaaagttccaggagatgtgtccctccaaata
aataccctgcagatggatgacaggaatcactatacatgtgaggtcacctggcagactcct
gatggaaaccaagtaataagagataagatcattgagctccgtgttcggaaatataatcca
cctagaatcaatactgaagcacctacaaccctgcactcctctttggaagcaacaactata
atgagttcaacctctgacttgaccactaatgggactggaaaacttgaggagaccattgct
ggttcagggaggaacctgccaatctttgccataatcttcatcatctccctttgctgcata
gtagctgtcaccataccttatatcttgttccgctgcaggacattccaacaagagtatgtc
tatggagtgagcagggtgtttgccaggaagacaagcaactctgaagaaaccacaagggtg
actaccatcgcaactgatgaaccagattcccaggctctgattagtgactactctgatgat
ccttgcctcagccaggagtaccaaataaccatcagatcaacaatgtctattcctgcctgc
tga