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) 
>AF027865|H2-AB*01|Mus musculus|F|EX1|
atggctctgcagatccccagcctcctcctctcggctgctgtggtggtgctgatggtgctg
agcagcccagggactgagggcggagactccgaaa
>AF027865|H2-AB*01|Mus musculus|F|EX2|[D1]|G-BETA1-LIKE|
ggcatttcgtgtaccagttcatgggcgagtgctacttcaccaacgggacgcagcgcatac
gatatgtgaccagatacatctacaaccgggaggagtacgtgcgctacgacagcgacgtgg
gcgagcaccgcgcggtgaccgagctggggcggccagacgccgagtactggaacagccagc
cggagatcctggagcgaacgcgggccgagctggacacggtgtgcagacacaactacgagg
ggccggagacccacacctccctgcggcggcttg
>AF027865|H2-AB*01|Mus musculus|F|EX3|[D2]|C-LIKE|
aacagcccaatgtcgtcatctccctgtccaggacagaggccctcaaccaccacaacactc
tggtctgctcagtgacagatttctacccagccaagatcaaagtgcgctggttccggaatg
gccaggaggagacggtgggggtctcatccacacagcttattaggaatggggactggacct
tccaggtcctggtcatgctggagatgacccctcggcggggagaggtctacacctgtcacg
tggagcatcccagcctgaagagccccatcactgtggagtgga
>AF027865|H2-AB*01|Mus musculus|F|EX4|
gggcacagtctgagtctgcctggagcaagatgttgagcggcatcgggggctgcgtgcttg
gggtgatcttcctcgggcttggccttttcatccgtcacaggagtcagaaag
>AF027865|H2-AB*01|Mus musculus|F|EX5|
gacctcgaggccctcctccagcag
>AF027865|H2-AB*01|Mus musculus|F|EX6|
ggctcctgcag
>AF027865|H2-AB*01|Mus musculus|F|EX1-6|
atggctctgcagatccccagcctcctcctctcggctgctgtggtggtgctgatggtgctg
agcagcccagggactgagggcggagactccgaaaggcatttcgtgtaccagttcatgggc
gagtgctacttcaccaacgggacgcagcgcatacgatatgtgaccagatacatctacaac
cgggaggagtacgtgcgctacgacagcgacgtgggcgagcaccgcgcggtgaccgagctg
gggcggccagacgccgagtactggaacagccagccggagatcctggagcgaacgcgggcc
gagctggacacggtgtgcagacacaactacgaggggccggagacccacacctccctgcgg
cggcttgaacagcccaatgtcgtcatctccctgtccaggacagaggccctcaaccaccac
aacactctggtctgctcagtgacagatttctacccagccaagatcaaagtgcgctggttc
cggaatggccaggaggagacggtgggggtctcatccacacagcttattaggaatggggac
tggaccttccaggtcctggtcatgctggagatgacccctcggcggggagaggtctacacc
tgtcacgtggagcatcccagcctgaagagccccatcactgtggagtggagggcacagtct
gagtctgcctggagcaagatgttgagcggcatcgggggctgcgtgcttggggtgatcttc
ctcgggcttggccttttcatccgtcacaggagtcagaaaggacctcgaggccctcctcca
gcagggctcctgcagtga