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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) 
>U05259|CD79A*01|Homosapiens|F|EX1|
MPGGPGVLQALPATIFLLFLLSAVYL
>U05259|CD79A*01|Homosapiens|F|EX2|[D1]|C-LIKE|
GPGCQALWMHKVPASLMVSLGEDAHFQCPHNSSNNANVTWWRVLHGNYTWPPEFLGPGED
PNGTLIIQNVNKSHGGIYVCRVQEGNESYQQSCGTYLRVR
>U05259|CD79A*01|Homosapiens|F|EX3|
QPPPRPFLDMGEGTKNRIITAEGIILLFCAVVPGTLLLFR
>U05259|CD79A*01|Homosapiens|F|EX4|
KLGLDAGDEYEDENLYE
>U05259|CD79A*01|Homosapiens|F|EX5|
GLNLDDCSMYEDISRGLQGTYQDVGSLNIGDVQLEKP
>CD79A*01|Homo sapiens|F|EX1-5|Complete|Splicing A|
MPGGPGVLQALPATIFLLFLLSAVYLGPGCQALWMHKVPASLMVSLGEDAHFQCPHNSSN
NANVTWWRVLHGNYTWPPEFLGPGEDPNGTLIIQNVNKSHGGIYVCRVQEGNESYQQSCG
TYLRVRQPPPRPFLDMGEGTKNRIITAEGIILLFCAVVPGTLLLFRKRWQNEKLGLDAGD
EYEDENLYEGLNLDDCSMYEDISRGLQGTYQDVGSLNIGDVQLEKP