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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) 
>U17715|B7A2*01|Homo sapiens|F|EX1|
MDPQC
>U17717|B7A2*01|Homo sapiens|F|EX2|[D1]|V-LIKE|
TMGLSNILFVMAFLLS
>U17718|B7A2*01|Homo sapiens|F|EX3|[D1]|V-LIKE|
GAAPLEIQAYFNETADLPCQFANSQNQSLSELVVFWQDQENLVLNEVYLGKEKFDSVHSK
YMGRTSFDSDSWTLRLHNLQIKDKGLYQCIIHHKKPTGMIRIHQMNSELSVL
>U17719|B7A2*01|Homo sapiens|F|EX4|[D2]|C-LIKE|
ANFSQPEIVPISNITENVYINLTCSSIHGYPEPKKMSVLLRTKNSTIEYDGIMQKSQDNV
TELYDVSISLSVSFPDVTSNMTIFCILETDKTRLLSSPFSI
>U17720|B7A2*01|Homo sapiens|F|EX5|
ELEDPQPPPDHIPWITAVLPTVIICVMVFCLILWKWKKKKRPRNSYKC
>U17721|B7A2*01|Homo sapiens|F|EX6|
GTNTMEREESEQTKK
>U17722|B7A2*01|Homo sapiens|F|EX7|
REKIHIPERSDEAQRVFKSSKTSSCDKSDTCF
>B7A2*01|Homo sapiens|F|EX1-EX7|Splicing A|complete|
MDPQCTMGLSNILFVMAFLLSGAAPLEIQAYFNETADLPCQFANSQNQSLSELVVFWQDQ
ENLVLNEVYLGKEKFDSVHSKYMGRTSFDSDSWTLRLHNLQIKDKGLYQCIIHHKKPTGM
IRIHQMNSELSVLANFSQPEIVPISNITENVYINLTCSSIHGYPEPKKMSVLLRTKNSTI
EYDGIMQKSQDNVTELYDVSISLSVSFPDVTSNMTIFCILETDKTRLLSSPFSIELEDPQ
PPPDHIPWITAVLPTVIICVMVFCLILWKWKKKKRPRNSYKCGTNTMEREESEQTKKREK
IHIPERSDEAQRVFKSSKTSSCDKSDTCF*