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) 
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX1|splicing A|partial|
ATGGTACCGTGCACGCTGCTCCTGCTGTTGGCGGCCGCCCTGGCTCCGACTCAGACCCGC
GCGG
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX2|[D1]|G-ALPHA1-DOMAIN|splicing A|partial|
GCCCACACTCGCTGAGGTATTTCGTCACCGCCGTGTCCCGGCCCGGCCTCGGGGAGCCCC
GGTACATGGAAGTCGGCTACGTGGACGACACGGAGTTCGTGCGCTTCGACAGCGACGCGG
AGAATCCGAGATATGAGCCGCGGGCGCGGTGGATGGAGCAGGAGGGGCCCGAGTATTGGG
AGCGGGAGACACAGAAAGCCAAGGGCAATGAGCAGAGTTTCCGAGTGGACCTGAGGACCC
TGCTCGGCTACTACAACCAGAGCAAGGGCG
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX3|[D2]|G-ALPHA2-DOMAIN|splicing A|partial|
GCTCTCACACTATTCAGGTGATCTCTGGCTGTGAAGTGGGGTCCGACGGGCGACTCCTCC
GCGGGTACCAGCAGTACGCCTACGACGGCTGCGATTACATCGCCCTGAACGAAGACCTGA
AAACGTGGACGGCGGCGGACATGGCGGCGCTGATCACCAAACACAAGTGGGAGCAGGCTG
GTGAAGCAGAGAGACTCAGGGCCTACCTGGAGGGCACGTGCGTGGAGTGGCTCCGCAGAT
ACCTGAAGAACGGGAACGCGACGCTGCTGCGCACAG
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX4|[D3]|C-LIKE-DOMAIN|splicing A|partial|
ATTCCCCAAAGGCCCATGTGACCCATCACAGCAGACCTGAAGATAAAGTCACCCTGAGGT
GCTGGGCCCTGGGCTTCTACCCTGCTGACATCACCCTGACCTGGCAGTTGAATGGGGAGG
AGCTGATCCAGGACATGGAGCTTGTGGAGACCAGGCCTGCAGGGGATGGAACCTTCCAGA
AGTGGGCATCTGTGGTGGTGCCTCTTGGGAAGGAGCAGTATTACACATGCCATGTGTACC
ATCAGGGGCTGCCTGAGCCCCTCACCCTGAGATGGG
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX5|splicing A|partial|
AGCCTCCTCCATCCACTGTCTCCAACATGGCGACCGTTGCTGTTCTGGTTGTCCTTGGAG
CTGCAATAGTCACTGGAGCTGTGGTGGCTTTTGTGATGAAGATGAGAAGGAGAAACACAG
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX6|splicing A|partial|
GTGGAAAAGGAGGGGACTATGCTCTGGCTCCAG
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX7|splicing A|partial|
GCTCCCAGACCTCTGATCTGTCTCTCCCAGATTGTAAAG
>U47328|MH1-K1*01|Mus musculus_C57BL/10|F|EX8|splicing A|partial|
TGATGGTTCATGACCCTCATTCTCTAGCG