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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) 
>AB021288|B2M*01|Homo sapiens|F|EX1
atgtctcgctccgtggccttagctgtgctcgcgctactctctctttctggcctggaggct
atccagc
>AB021288|B2M*01|Homo sapiens|F|EX2
gtactccaaagattcaggtttactcacgtcatccagcagagaatggaaagtcaaatttcc
tgaattgctatgtgtctgggtttcatccatccgacattgaagttgacttactgaagaatg
gagagagaattgaaaaagtggagcattcagacttgtctttcagcaaggactggtctttct
atctcttgtactacactgaattcacccccactgaaaaagatgagtatgcctgccgtgtga
accatgtgactttgtcacagcccaagatagttaagtgg
>AB021288|B2M*01|Homo sapiens|F|EX3
gatcgagacatg
>AB021288|B2M*01|Homo sapiens|F|L-REGION
atgtctcgctccgtggccttagctgtgctcgcgctactctctctttctggcctggaggct
>AB021288|B2M*01|Homo sapiens|F|[D]|C-LIKE-DOMAIN
atccagcgtactccaaagattcaggtttactcacgtcatccagcagagaatggaaagtca
aatttcctgaattgctatgtgtctgggtttcatccatccgacattgaagttgacttactg
aagaatggagagagaattgaaaaagtggagcattcagacttgtctttcagcaaggactgg
tctttctatctcttgtactacactgaattcacccccactgaaaaagatgagtatgcctgc
cgtgtgaaccatgtgactttgtcacagcccaagatagttaagtgggatcgagacatg
>AB021288|B2M*01|Homo sapiens|F
atgtctcgctccgtggccttagctgtgctcgcgctactctctctttctggcctggaggct
atccagcgtactccaaagattcaggtttactcacgtcatccagcagagaatggaaagtca
aatttcctgaattgctatgtgtctgggtttcatccatccgacattgaagttgacttactg
aagaatggagagagaattgaaaaagtggagcattcagacttgtctttcagcaaggactgg
tctttctatctcttgtactacactgaattcacccccactgaaaaagatgagtatgcctgc
cgtgtgaaccatgtgactttgtcacagcccaagatagttaagtgggatcgagacatg