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) 
>AF115529|MH2-DB2*01|Oncorhynchus mykiss|F|EX1|splicing a|complete|
ATGTCTAAGTCAATTCGCTTCTACATTTGCCTAGCCGTGGCATTATCCACTCTGTATGAA
ACAG
>AF115529|MH2-DB2*01|Oncorhynchus mykiss|F|EX2|[D1]|G-BETA-DOMAIN|splicing a|complete|
ATGGATATGCCTCCGATGTGGTGACTCGATGTTTATACAGCTCTATTGATATGCATGGTG
CAGAGTTCATACAGTCTTATACCTTTAATAAGGTTGAACATCTCAGATTCAACAGCACTG
TGGGTGAGTTTGTTGGATACACTGAGCTGGGTCTGAAGAATGCAAAGAGATTGAACCGTG
GTCAAGAGGTGGTTCAAATGCGAGGAGAGCTGGAGCGTCTATGTAAGCCTAACGCTGATA
TCCACTACAGAGCCATACTGGACAAGACAG
>AF115529|MH2-DB2*01|Oncorhynchus mykiss|F|EX3|[D2]|C-LIKE-DOMAIN|splicing a|complete|
TTGAGCCCCATGTCAGACTGAGCTCAGTGACTCCCCCCAGTGGCAGACACCCTGCCATGC
TGATGTGCAGCGCCTATGACTTCTACCCCAAACCAATCAGAGTGACCTGGCTGAGGGACG
GACGTGAGGTGAAATCTGATGTGACCTCCACTGAGGAGCTGGCTAACGGGGACTGGTACT
ACCAGATCCACTCCCACCTGGAGTACACACCCAAGTCTGGAGAGAAGATCTCCTGCATGG
TGGAGCACATCAGCCTCACTGAGCCCATGATGTATCACTGGG
>AF115529|MH2-DB2*01|Oncorhynchus mykiss|F|EX4|splicing a|complete|
ACCCGTCCCTGCCTGAGGCTGAGAGGAATAAGATAGCGATCGGGGCATCTGGTCTGGTGC
TGGGAACCATCTTAGCATTAGCAGGACTGATCTACTACAAGAAGAAGTCTTCTG
>AF115529|MH2-DB2*01|Oncorhynchus mykiss|F|EX5|complete|
GGGTGCTC
>AF115529|MH2-DB2*01|Oncorhynchus mykiss|F|EX1-5|splicing A|complete|
ATGTCTAAGTCAATTCGCTTCTACATTTGCCTAGCCGTGGCATTATCCACTCTGTATGAA
ACAGATGGATATGCCTCCGATGTGGTGACTCGATGTTTATACAGCTCTATTGATATGCAT
GGTGCAGAGTTCATACAGTCTTATACCTTTAATAAGGTTGAACATCTCAGATTCAACAGC
ACTGTGGGTGAGTTTGTTGGATACACTGAGCTGGGTCTGAAGAATGCAAAGAGATTGAAC
CGTGGTCAAGAGGTGGTTCAAATGCGAGGAGAGCTGGAGCGTCTATGTAAGCCTAACGCT
GATATCCACTACAGAGCCATACTGGACAAGACAGTTGAGCCCCATGTCAGACTGAGCTCA
GTGACTCCCCCCAGTGGCAGACACCCTGCCATGCTGATGTGCAGCGCCTATGACTTCTAC
CCCAAACCAATCAGAGTGACCTGGCTGAGGGACGGACGTGAGGTGAAATCTGATGTGACC
TCCACTGAGGAGCTGGCTAACGGGGACTGGTACTACCAGATCCACTCCCACCTGGAGTAC
ACACCCAAGTCTGGAGAGAAGATCTCCTGCATGGTGGAGCACATCAGCCTCACTGAGCCC
ATGATGTATCACTGGGACCCGTCCCTGCCTGAGGCTGAGAGGAATAAGATAGCGATCGGG
GCATCTGGTCTGGTGCTGGGAACCATCTTAGCATTAGCAGGACTGATCTACTACAAGAAG
AAGTCTTCTGGGGTGCTC