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IMGT reference sequences in FASTA format:

Amino acid sequences with 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) 
>L27587|CD79B*01|Homo sapiens|F|EX1|
MARLALSPVPSHWMVALLLLLS
>L27587|CD79B*01|Homo sapiens|F|EX2|
AEPVPAARSEDRYRNPK
>L27587|CD79B*01|Homo sapiens|F|EX3|[D]|C-LIKE|
.....GSACSRIWQSPRFIARKR...GFTVKMHCYMNSASG...NVSWLWKQEMDENP..
.QQLKLEKGRMEE......SQNESLATLTIQGIRF..EDNGIYFCQQKCNNTSEVYQGCG
TELRVM
>L27587|CD79B*01|Homo sapiens|F|EX4|
GFSTLAQLKQRNTLKDGIIMIQTLLIILFIIVPIFLLLDK
>L27587|CD79B*01|Homo sapiens|F|EX5|
DDSKAGMEEDHTYE
>L27587|CD79B*01|Homo sapiens|F|EX6|
GLDIDQTATYEDIVTLRTGEVKWSVGEHPGQE
>BC002975|CD79B*02|Homo sapiens|F|EX1|
MARLALSPVPSHWMVALLLLLS
>BC002975|CD79B*02|Homo sapiens|F|EX2|
AEPVPAARSEDRYRNPK
>BC002975|CD79B*02|Homo sapiens|F|EX3|[D]|C-LIKE|
.....GSACSRIWQSPRFIARKR...GFTVKMHCYMNSASG...NVSWLWKQEMDENP..
.QQLKLEKGRMEE......SQNESLATLTIQGIRF..EDNGIYFCQQKCNNTSEVYQGCG
TELRVM
>BC002975|CD79B*02|Homo sapiens|F|EX4|
GFSTLAQLKQRNTLKDGIIMIQTLLIILFIIVPIFLLLDK
>BC002975|CD79B*02|Homo sapiens|F|EX5|
DDSKAGMEEDHTYE
>BC002975|CD79B*02|Homo sapiens|F|EX6|
GLDIDQTATYEDIVTLRTGEVKWSVGEHPGQE
>M80461|CD79B*03|Homo sapiens|F|EX1|
MARLALSPVPSHWMVALLLLLS
>M80461|CD79B*03|Homo sapiens|F|EX2|
AEPVPAARSEDRYRNPK
>M80461|CD79B*03|Homo sapiens|F|EX3|[D]|C-LIKE|
.....GSACSRIWQSPRFIARKR...RFTVKMHCYMNSASG...NVSWLWKQEMDENP..
.QQLKLEKGRMEE......SQNESLATLTIQGIRF..EDNGIYFCQQKCNNTSEVYQGCG
TELRVM
>M80461|CD79B*03|Homo sapiens|F|EX4|
GFSTLAQLKQRNTLKDGIIMIQTLLIILFIIVPIFLLLDK
>M80461|CD79B*03|Homo sapiens|F|EX5|
DDSKAGMEEDHTYE
>M80461|CD79B*03|Homo sapiens|F|EX6|
GLDIDQTATYEDIVTLRTGEVKWSVGEHPGQE
>S52229|CD79B*04|Homo sapiens|F|EX1|
MARLALSPVPSHWMVALLLLLS
>S52229|CD79B*04|Homo sapiens|F|EX2|
AEPVPAARSEDRYRNPK
>S52229|CD79B*04|Homo sapiens|F|EX3|[D]|C-LIKE|
.....GSACSRIWQSPRFIARKR...RFTVKMHCYMNSASG...NVSWLWKQEMDENP..
.QQLKLEKGRMEE......SQNESLATLTIQGIRF..EDNGIYFCQQKCNNTSEVYQGCG
TELRVM
>S52229|CD79B*04|Homo sapiens|F|EX4|
GFSTLAQLKQRNTLKDGIIMIQTLLIILFIIVPIFLLLDK
>S52229|CD79B*04|Homo sapiens|F|EX5|
DDSKAGMEEDHTYE
>S52229|CD79B*04|Homo sapiens|F|EX6|
GLDIDQTATYEDIVTLRTGEVKWSVGEHPGQE