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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)
>J03857|CD79B*01|Mus musculus|F|EX1|
atggccacactggtgctgtcttccatgccctgccactggctgttgttcctgctgctgctc
ttctcag
>J03857|CD79B*01|Mus musculus|F|EX2|
gtgagccggtaccagcaatgacaagcagtgacctgccactgaatttccaag
>J03857|CD79B*01|Mus musculus|F|EX3|[D]|C-LIKE|
gaagcccttgttcccagatctggcagcacccgaggtttgcagccaaaaagcggagctcca
tggtgaagtttcactgctacacaaaccactcaggtgcactgacctggttccgaaagcgag
ggagccagcagccccaggaactggtctcagaagagggacgcattgtgcagacccagaatg
gctctgtctacaccctcactatccaaaacatccagtacgaggataatggtatctacttct
gcaagcagaaatgtgacagcgccaaccataatgtcaccgacagctgtggcacggaacttc
tagtcttag
>J03857|CD79B*01|Mus musculus|F|EX4|
gattcagcacgttggaccaactgaagcggcggaacacactgaaagatggcattatcttga
tccagaccctcctcatcatcctcttcatcattgtgcccatcttcctgctacttgacaag
>J03857|CD79B*01|Mus musculus|F|EX5|
gatgacggcaaggctgggatggaggaagatcacacctatgag
>J03857|CD79B*01|Mus musculus|F|EX6|
ggcttgaacattgaccagacagccacctatgaagacatagtgactcttcggacaggggag
gtaaagtggtcggtaggagagcatccaggccaggaa
>CD79B*01|Mus musculus|F|EX1-6|Complete|Splicing A|
atggccacactggtgctgtcttccatgccctgccactggctgttgttcctgctgctgctc
ttctcaggtgagccggtaccagcaatgacaagcagtgacctgccactgaatttccaagga
agcccttgttcccagatctggcagcacccgaggtttgcagccaaaaagcggagctccatg
gtgaagtttcactgctacacaaaccactcaggtgcactgacctggttccgaaagcgaggg
agccagcagccccaggaactggtctcagaagagggacgcattgtgcagacccagaatggc
tctgtctacaccctcactatccaaaacatccagtacgaggataatggtatctacttctgc
aagcagaaatgtgacagcgccaaccataatgtcaccgacagctgtggcacggaacttcta
gtcttaggattcagcacgttggaccaactgaagcggcggaacacactgaaagatggcatt
atcttgatccagaccctcctcatcatcctcttcatcattgtgcccatcttcctgctactt
gacaaggatgacggcaaggctgggatggaggaagatcacacctatgagggcttgaacatt
gaccagacagccacctatgaagacatagtgactcttcggacaggggaggtaaagtggtcg
gtaggagagcatccaggccaggaatga