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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) 
>M12807|CD4*01|Homo sapiens|F|EX1|
atgaaccggggagtcccttttaggcacttgcttctggtgctgcaactgg
>M12807|CD4*01|Homo sapiens|F|EX2|[D1]|V-LIKE|
cgctcctcccagcagccactcagggaaagaaagtggtgctgggcaaaaaaggggatacag
tggaactgacctgtacagcttcccagaagaagagcatacaattccactggaaaaactcca
accagataaagattctgggaaatcagggctccttcttaactaaag
>M12807|CD4*01|Homo sapiens|F|EX3|[D1]|V-LIKE|
gtccatccaagctgaatgatcgcgctgactcaagaagaagcctttgggaccaaggaaact
tccccctgatcatcaagaatcttaagatagaagactcagatacttacatctgtgaagtgg
aggaccagaaggaggaggtgcaattgctagtgttcggat
>M12807|CD4*01|Homo sapiens|F|EX4|[D2]|C-LIKE|
tgactgccaactctgacacccacctgcttcaggggcagagcctgaccctgaccttggaga
gcccccctggtagtagcccctcagtgcaatgtaggagtccaaggggtaaaaacatacagg
gggggaagaccctctccgtgtctcagctggagctccaggatagtggcacctggacatgca
ctgtcttgcagaaccagaagaaggtggagttcaaaatagacatcgtggtgctag
>M12807|CD4*01|Homo sapiens|F|EX5|[D3]|V-LIKE|
ctttccagaaggcctccagcatagtctataagaaagagggggaacaggtggagttctcct
tcccactcgcctttacagttgaaaagctgacgggcagtggcgagctgtggtggcaggcgg
agagggcttcctcctccaagtcttggatcacctttgacctgaagaacaaggaagtgtctg
taaaacgggttacccaggaccctaagctccagatgggcaagaagctcccgctccacctca
ccctgccccaggccttgcctcagtatgctggctctggaaacctcaccctggcccttgaag
cgaaaacaggaaagttgcatcaggaagtgaacctggtggtgatgagag
>M12807|CD4*01|Homo sapiens|F|EX6|[D4]|C-LIKE|
ccactcagctccagaaaaatttgacctgtgaggtgtggggacccacctcccctaagctga
tgctgagcttgaaactggagaacaaggaggcaaaggtctcgaagcgggagaaggcggtgt
gggtgctgaaccctgaggcggggatgtggcagtgtctgctgagtgactcgggacaggtcc
tgctggaatccaacatcaagg
>M12807|CD4*01|Homo sapiens|F|EX7|
ttctgcccacatggtccaccccggtgcagccaatggccctgattgtgctggggggcgtcg
ccggcctcctgcttttcattgggctaggcatcttcttctgtgtcaggtgccggcaccgaa
gg
>M12807|CD4*01|Homo sapiens|F|EX8|
cgccaagcagagcggatgtctcagatcaagagactcctcagtgagaagaagacctgccag
tgccctca
>M12807|CD4*01|Homo sapiens|F|EX9|
ccggtttcagaagacatgtagccccatttga
>CD4*01|Homo sapiens|F|EX1-EX9|Splicing A|complete|
atgaaccggggagtcccttttaggcacttgcttctggtgctgcaactggcgctcctccca
gcagccactcagggaaagaaagtggtgctgggcaaaaaaggggatacagtggaactgacc
tgtacagcttcccagaagaagagcatacaattccactggaaaaactccaaccagataaag
attctgggaaatcagggctccttcttaactaaaggtccatccaagctgaatgatcgcgct
gactcaagaagaagcctttgggaccaaggaaacttccccctgatcatcaagaatcttaag
atagaagactcagatacttacatctgtgaagtggaggaccagaaggaggaggtgcaattg
ctagtgttcggattgactgccaactctgacacccacctgcttcaggggcagagcctgacc
ctgaccttggagagcccccctggtagtagcccctcagtgcaatgtaggagtccaaggggt
aaaaacatacagggggggaagaccctctccgtgtctcagctggagctccaggatagtggc
acctggacatgcactgtcttgcagaaccagaagaaggtggagttcaaaatagacatcgtg
gtgctagctttccagaaggcctccagcatagtctataagaaagagggggaacaggtggag
ttctccttcccactcgcctttacagttgaaaagctgacgggcagtggcgagctgtggtgg
caggcggagagggcttcctcctccaagtcttggatcacctttgacctgaagaacaaggaa
gtgtctgtaaaacgggttacccaggaccctaagctccagatgggcaagaagctcccgctc
cacctcaccctgccccaggccttgcctcagtatgctggctctggaaacctcaccctggcc
cttgaagcgaaaacaggaaagttgcatcaggaagtgaacctggtggtgatgagagccact
cagctccagaaaaatttgacctgtgaggtgtggggacccacctcccctaagctgatgctg
agcttgaaactggagaacaaggaggcaaaggtctcgaagcgggagaaggcggtgtgggtg
ctgaaccctgaggcggggatgtggcagtgtctgctgagtgactcgggacaggtcctgctg
gaatccaacatcaaggttctgcccacatggtccaccccggtgcagccaatggccctgatt
gtgctggggggcgtcgccggcctcctgcttttcattgggctaggcatcttcttctgtgtc
aggtgccggcaccgaaggcgccaagcagagcggatgtctcagatcaagagactcctcagt
gagaagaagacctgccagtgccctcaccggtttcagaagacatgtagccccatttga