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IMGT reference sequences in FASTA format:

Amino acid 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) 
>AF394451|B7H3*01|Mus musculus|F|EX1|
MLRGWGGPSVGVCVRTALGVLCLCLT
>AF394451|B7H3*01|Mus musculus|F|EX2|[D1]|V-LIKE|
GAVEVQVSEDPVVALVDTDATLRCSFSPEPGFSLAQLNLIWQLTDTKQLVHSFTEGRDQG
SAYSNRTALFPDLLVQGNASLRLQRVRVTDEGSYTCFVSIQDFDSAAVSLQVA
>AF394451|B7H3*01|Mus musculus|F|EX3|[D2]|C-LIKE|
APYSKPSMTLEPNKDLRPGNMVTITCSSYQGYPEAEVFWKDGQGVPLTGNVTTSQMANER
GLFDVHSVLRVVLGANGTYSCLVRNPVLQQDAHGSVTIT
>AF394451|B7H3*01|Mus musculus|F|EX4|
GQPLTFPPEALWVTVGLSVCLVVLLVALAFVCWRKIKQSCEEENA
>AF394451|B7H3*01|Mus musculus|F|EX5|
GAEDQDGDGEGSKT
>AF394451|B7H3*01|Mus musculus|F|EX6|
ALRPLKPSENKE
>AF394451|B7H3*01|Mus musculus|F|EX7|
DDGQEIA
>B7H3*01|Mus musculus|F|EX1-EX7|Splicing A|complete|
MLRGWGGPSVGVCVRTALGVLCLCLTGAVEVQVSEDPVVALVDTDATLRCSFSPEPGFSL
AQLNLIWQLTDTKQLVHSFTEGRDQGSAYSNRTALFPDLLVQGNASLRLQRVRVTDEGSY
TCFVSIQDFDSAAVSLQVAAPYSKPSMTLEPNKDLRPGNMVTITCSSYQGYPEAEVFWKD
GQGVPLTGNVTTSQMANERGLFDVHSVLRVVLGANGTYSCLVRNPVLQQDAHGSVTITGQ
PLTFPPEALWVTVGLSVCLVVLLVALAFVCWRKIKQSCEEENAGAEDQDGDGEGSKTALR
PLKPSENKEDDGQEIA*