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IMGT reference sequences in FASTA format:

Nucleotide sequences with 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) 
>AY346100|B7H4*01|Homo sapiens|F|EX1|
atggcttccctggggcagatcctcttctggag
>AY346100|B7H4*01|Homo sapiens|F|EX2|
cataattagcatcatcattattctggctggagcaattgcactcatcattggctttggtat
ttcag
>AY346100|B7H4*01|Homo sapiens|F|EX3|[D1]|V-LIKE|
.ggagacactccatcacagtcactactgtcgcctcagctgggaacattggggaggatgga
atccagagctgcacttttgaacctgacatcaaactt.........tctgatatcgtgata
caatggctgaaggaaggtgttttaggcttggtccatgagttcaaagaaggcaaagat...
.........gagctgtcggagcaggatgaaatgttcagaggccggacagcagtgtttgct
gatcaagtgatagttggcaatgcctctttgcggctgaaaaacgtgcaactcacagatgct
ggcacctacaaatgttatatcatcacttct............aaaggcaaggggaatgct
aaccttgagtataaaactggag
>AY346100|B7H4*01|Homo sapiens|F|EX4|[D2]|C-LIKE|
.ccttcagcatgccggaagtgaatgtggactataatgccagc..................
tcagagaccttgcggtgtgaggctccccgatggttcccc.........cagcccacagtg
gtctgggcatcccaagttgaccagggagccaacttctcggaagtctccaataccagcttt
gagctgaactct...........................gagaatgtgaccatgaaggtt
gtgtctgtgctctacaatgtt......acgatcaacaacacatactcctgtatgattgaa
aatgacattgccaaagcaacaggggatatcaaagtgacag
>AY346100|B7H4*01|Homo sapiens|F|EX5|
aatcggagatcaaaaggcggagtcacctacagctgctaaactcaaaggcttctctgtgtg
tctcttctttctttgccatcagctgggcacttctgcctctcagcccttacctgatgctaa
aa
>DQ103757|B7H4*01|Homo sapiens|F|EX1|
atggcttccctggggcagatcctcttctggag
>DQ103757|B7H4*01|Homo sapiens|F|EX2|
cataattagcatcatcattattctggctggagcaattgcactcatcattggctttggtat
ttcag
>DQ103757|B7H4*01|Homo sapiens|F|EX4|[D2]|C-LIKE|
.ccttcagcatgccggaagtgaatgtggactataatgccagc..................
tcagagaccttgcggtgtgaggctccccgatggttcccc.........cagcccacagtg
gtctgggcatcccaagttgaccagggagccaacttctcggaagtctccaataccagcttt
gagctgaactct...........................gagaatgtgaccatgaaggtt
gtgtctgtgctctacaatgtt......acgatcaacaacacatactcctgtatgattgaa
aatgacattgccaaagcaacaggggatatcaaagtgacag
>DQ103757|B7H4*01|Homo sapiens|F|EX5|
aatcggagatcaaaaggcggagtcacctacagctgctaaactcaaaggcttctctgtgtg
tctcttctttctttgccatcagctgggcacttctgcctctcagcccttacctgatgctaa
aa
>AY442303|B7H4*01|Homo sapiens|F|EX1|
atggcttccctggggcagatcctcttctggag
>AY442303|B7H4*01|Homo sapiens|F|EX2|
cataattagcatcatcattattctggctggagcaattgcactcatcattggctttggtat
ttcag
>AY442303|B7H4*01|Homo sapiens|F|EX3|
aagtctctgtctggctttcagcaatgaagggttggtgtagaagttccaaggcttccctta
gcattgatctttgcttcctgaacttcagggagacactccatcacagtcactactgtcgcc
tcagctgggaacattggggaggatggaatccagagctgcacttt
>AL391476|B7H4*02|Homo sapiens|F|EX1|
atggcttccctggggcagatcctcttctggag
>AL391476|B7H4*02|Homo sapiens|F|EX2|
cataattagcatcatcattattctggctggagcaattgcactcatcattggctttggtat
ttcag
>AL391476|B7H4*02|Homo sapiens|F|EX3|[D1]|V-LIKE|
.ggagacactccatcacagtcactactgtcgcctcagctgggaacattggggaggatgga
atccagagctgcacttttgaacctgacatcaaactt.........tctgatatcgtgata
caatggctgaaggaaggtgttttaggcttggtccatgagttcaaagaaggcaaagat...
.........gagctgtcggagcaggatgaaatgttcagaggccggacagcagtgtttgct
gatcaagtgatagttggcaatgcctctttgcggctgaaaaacgtgcaactcacagatgct
ggcacctacaaatgttatatcatcacttct............aaaggcaaggggaatgct
aaccttgagtataaaactggag
>AL391476|B7H4*02|Homo sapiens|F|EX4|[D2]|C-LIKE|
.ccttcagcatgccggaagtgaatgtggactataatgccagc..................
tcagagaccttgcggtgtgaggctccccgatggttcccc.........cagcccacagtg
gtctgggcatcccaagttgaccagggagccaacttctcggaagtctccaataccagcttt
gagctgaactct...........................gagaatgtgaccatgaaggtt
gtgtctgtgctctacaatgtt......acgatcaacaacacatactcctgtatgattgaa
aatgacattgccaaagcaacaggggatatcaaagtgacag
>AL391476|B7H4*02|Homo sapiens|F|EX5|
aatcggagatcaaaaggcggagtcacctacagctgctaaactcaaaggcttctctgtgtg
tctcttctttctttgccatcagctgggcacttctgcctctcagcccttacctgatgctaa
aa