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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) 
>AY322147|B7H4*01|Mus musculus|F|EX1|
atggcttccttggggcagatcatcttttggag
>AY322147|B7H4*01|Mus musculus|F|EX2|
tattattaacatcatcatcatcctggctggggccatcgcactcatcattggctttggcat
ttcag
>AY322147|B7H4*01|Mus musculus|F|EX3|[D1]|V-LIKE|
gcaagcacttcatcacggtcacgaccttcacctcagctggaaacattggagaggacggga
ccctg..........agctgcacttttgaacctgacatcaaactcaacggcatcgtcatc
cagtggctgaaagaaggcatcaaaggt............ttggtccacgagttcaaagaa
ggcaaagacgacctctcacagcagcatgagatgttcagaggccgcacagcagtgtttgct
gatcaggtggtagttggcaatgcttccctgagactgaaaaacgtgcagctcacggatgct
ggc............acctacacatgttacatccgcacctcaaaaggcaaagggaatgca
aaccttgagtataagaccggag
>AY322147|B7H4*01|Mus musculus|F|EX4|[D2]|C-LIKE|
.ccttcagtatgccagagataaatgtggactataatgccagt..................
tcagagagtttacgctgcgaggctcctcggtggttcccc.........cagcccacagtg
gcctgggcatctcaagtcgaccaaggagccaatttctcagaagtctccaacaccagcttt
gagttgaactct...........................gagaatgtgaccatgaaggtc
gtatctgtgctctacaatgtc......acaatcaacaacacatactcctgtatgattgaa
aacgacattgccaaagccaccggggacatcaaagtgacag
>AY322147|B7H4*01|Mus musculus|F|EX5|
attcagaggtcaaaaggcggagtcagctgcagctgctcaactccgggccttccccgtgtg
ttttttcttctgcctttgcggctggctgggcgctcctatctctctcctgttgcctgatgc
taaga
>AK143276|B7H4*02|Mus musculus|F|EX1|
atggcttccttggggcagatcatcttttggag
>AK143276|B7H4*02|Mus musculus|F|EX2|
tattattaacatcatcatcatcctggctggggccatcgcactcatcattggctttggcat
ttcag
>AK143276|B7H4*02|Mus musculus|F|EX3|[D1]|V-LIKE|
gcaagcacttcatcacggtcacgaccttcacctcagctggaaacattggagaggacggga
ccctg..........agctgcacttttgaacctgacatcaaactcaacggcatcgtcatc
cagtggctgaaagaaggcatcaaaggt............ttggtccacgagttcaaagaa
ggcaaagacgacctctcacagcagcatgagatgttcagaggccgcacagcagtgtttgct
gatcaggtggtagttggcaatgcttccctgagactgaaaaacgtgcagctcacggatgct
ggc............acctacacatgttacatccgcacctcaaaaggcaaagggaatgca
aaccttgagtataagaccggag
>AK143276|B7H4*02|Mus musculus|F|EX4|[D2]|C-LIKE|
.ccttcagtatgccagagataaatgtggactataatgccagt..................
tcagagagtttacgctgcgaggctcctcggtggttcccc.........cagcccacagtg
gcctgggcatctcaagtcgaccaaggagccaatttctcagaagtctccaacaccagcttt
gagttgaactct...........................gagaatgtgaccatgaaggtc
gtatctgtgctctacaatgtc......acaatcaacaacacatactcctgtatgattgaa
aacgacattgccaaagccaccggggacatcaaagtgacag
>AK143276|B7H4*02|Mus musculus|F|EX5|
attcagaggtcaaaaggcgaagtcagctgcagttgctgaactctgggccttccccgtgtg
ttttttcttctgcctttgtggctggctgggcactcctatctctctcctgttgcctgatgc
taaga
>BC032925|B7H4*03|Mus musculus|F|EX1|
atggcttccttggggcagatcatcttttggag
>BC032925|B7H4*03|Mus musculus|F|EX2|
tattattaacatcatcatcatcctggctggggccatcgcactcatcattggctttggcat
ttcag
>BC032925|B7H4*03|Mus musculus|F|EX3|[D1]|V-LIKE|
gcaagcacttcatcacggtcacgaccttcacctcagctggaaacattggagaggacggga
ccctg..........agctgcacttttgaacctgacatcaaactcaacggcatcgtcatc
cagtggctgaaagaaggcatcaaaggt............ttggtccacgagttcaaagaa
ggcaaagacgacctctcacagcagcatgagatgttcagaggccgcacagcagtgtttgct
gatcaggtggtagttggcaatgcttccctgagactgaaaaacgtgcagctcacggatgct
ggc............acctacacatgttacatccgctcctcaaaaggcaaggggaatgca
aaccttgagtataagaccggag
>BC032925|B7H4*03|Mus musculus|F|EX4|[D2]|C-LIKE|
.ccttcagtatgccagagataaatgtggactataatgccagt..................
tcagagagtttacgctgcgaggctcctcggtggttcccc.........cagcccacagtg
gcctgggcatctcaagttgaccaaggagccaacttctcagaagtctccaacaccagcttt
gagttgaactct...........................gagaatgtgaccatgaaggtc
gtatctgtgctctacaatgtc......acaatcaacaacacatactcctgtatgattgaa
aacgacattgccaaagccaccggggacatcaaagtgacag
>BC032925|B7H4*03|Mus musculus|F|EX5|
gattcagaggtcaaaaggcggagtcagctgcagttgctgaactctgggccttccccgtgt
gtttcttcttctgcctttgtggctggctgggcactcctatctctctcctgttgcctgatg
ctaaga