Here you are: IMGT Web resources > IMGT Repertoire (RPI) > RPI entries from gene to protein

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) 
>M91646|FCGR1B*01|Homo sapiens|F|EX1|
atgtggttcttgacaactctgctcctttggg
>M91646|FCGR1B*01|Homo sapiens|F|EX2|
ttccagttgatgggcaagtgg
>M91646|FCGR1B*01|Homo sapiens|F|EX3|[D1]|C-LIKE|
acaccacaaaggcagtgatcactttgcagcctccatgggtcagcgtgttccaagaggaaa
ccgtaaccttgcactgtgaggtgctccatctgcctgggagcagctccacacagtggtttc
tcaatggcacagccactcagacctcgacccccagctacagaatcacctctgccagtgtca
atgacagtggtgaatacaggtgccagagaggtctctcagggcgaagtgaccccatacagc
tggaaatccacagag
>M91646|FCGR1B*01|Homo sapiens|F|EX4|[D2]|C-LIKE|
gctggctactactgcaggtctccagcagagtcttcatggaaggagaacctctggccttga
ggtgtcatgcgtggaaggataagctggtgtacaatgtgctttactatcgaaatggcaaag
cctttaagtttttccactggaattctaacctcaccattctgaaaaccaacataagtcaca
atggcacctaccattgctcaggcatgggaaagcatcgctacacatcagcaggaatatcac
aatacactgtgaaag
>M91646|FCGR1B*01|Homo sapiens|F|EX5|[D3]|C-LIKE|
agctatttccagctccagtgctgaatgcatctgtgacatccccactcctggaggggaatc
tggtcaccctgagctgtgaaacaaagttgctcttgcagaggcctggtttgtagctttact
tctccttctacatgggcagcaagaccctgcgaggcaggaacacatcctctgaataccaaa
tactaactgctagaagagaagactctgggttatactggtgcgaggctgccacagaggatg
gaaatgtccttaagcacagccctgagttggagcttcaagtgcttg
>M91646|FCGR1B*01|Homo sapiens|F|EX6|
gcctccagttaccaactcctgtctggtttcatgtccttttctatctggcagtgggaataa
tgtttttagtgaacactgttctctgggtgacaatacgtaaagaactgaaaagaaagaaaa
agtggaatttagaaatctctttggattctggtcatgagaagaaggtaatttccagccttc
aagaagacagacatttagaagaagagctgaaatgtcaggaacaaaaagaagaacagctgc
aggaaggggtgcaccggaaggagccccagggggccacgtag
>M91646|FCGR1B*01|Homo sapiens|F|
atgtggttcttgacaactctgctcctttgggttccagttgatgggcaagtggacaccaca
aaggcagtgatcactttgcagcctccatgggtcagcgtgttccaagaggaaaccgtaacc
ttgcactgtgaggtgctccatctgcctgggagcagctccacacagtggtttctcaatggc
acagccactcagacctcgacccccagctacagaatcacctctgccagtgtcaatgacagt
ggtgaatacaggtgccagagaggtctctcagggcgaagtgaccccatacagctggaaatc
cacagaggctggctactactgcaggtctccagcagagtcttcatggaaggagaacctctg
gccttgaggtgtcatgcgtggaaggataagctggtgtacaatgtgctttactatcgaaat
ggcaaagcctttaagtttttccactggaattctaacctcaccattctgaaaaccaacata
agtcacaatggcacctaccattgctcaggcatgggaaagcatcgctacacatcagcagga
atatcacaatacactgtgaaagagctatttccagctccagtgctgaatgcatctgtgaca
tccccactcctggaggggaatctggtcaccctgagctgtgaaacaaagttgctcttgcag
aggcctggtttgtagctttacttctccttctacatgggcagcaagaccctgcgaggcagg
aacacatcctctgaataccaaatactaactgctagaagagaagactctgggttatactgg
tgcgaggctgccacagaggatggaaatgtccttaagcacagccctgagttggagcttcaa
gtgcttggcctccagttaccaactcctgtctggtttcatgtccttttctatctggcagtg
ggaataatgtttttagtgaacactgttctctgggtgacaatacgtaaagaactgaaaaga
aagaaaaagtggaatttagaaatctctttggattctggtcatgagaagaaggtaatttcc
agccttcaagaagacagacatttagaagaagagctgaaatgtcaggaacaaaaagaagaa
cagctgcaggaaggggtgcaccggaaggagccccagggggccacgtag
>L03419|FCGR1B*01|Homo sapiens|F|EX1|splicingB
atgtggttcttgacaactctgctcctttggg
>L03419|FCGR1B*01|Homo sapiens|F|EX2|splicingB
ttccagttgatgggcaagtgg
>L03419|FCGR1B*01|Homo sapiens|F|EX4|[D1]|C-LIKE|splicingB
acaccacaaaggcagtgatcactttgcagcctccatgggtcagcgtgttccaagaggaaa
ccgtaaccttgcactgtgaggtgctccatctgcctgggagcagctccacacagtggtttc
tcaatggcacagccactcagacctcgacccccagctacagaatcacctctgccagtgtca
atgacagtggtgaatacaggtgccagagaggtctctcagggcgaagtgaccccatacagc
tggaaatccacagag
>L03419|FCGR1B*01|Homo sapiens|F|EX4|[D2]|C-LIKE|splicingB
gctggctactactgcaggtctccagcagagtcttcatggaaggagaacctctggccttga
ggtgtcatgcgtggaaggataagctggtgtacaatgtgctttactatcgaaatggcaaag
cctttaagtttttccactggaattctaacctcaccattctgaaaaccaacataagtcaca
atggcacctaccattgctcaggcatgggaaagcatcgctacacatcagcaggaatatcac
aatacactgtgaaag
>L03419|FCGR1B*01|Homo sapiens|EX6|splicingB
gcctccagttaccaactcctgtctggtttcatgtccttttctatctggcagtgggaataa
tgtttttagtgaacactgttctctgggtgacaatacgtaaagaactgaaaagaaagaaaa
agtggaatttagaaatctctttggattctggtcatgagaagaaggtaatttccagccttc
aagaagacagacatttagaagaagagctgaaatgtcaggaacaaaaagaagaacagctgc
aggaaggggtgcaccggaaggagccccagggggccacgtagcag
>L03419|FCGR1B*01|Homo sapiens|F|splicingB
atgtggttcttgacaactctgctcctttgggttccagttgatgggcaagtggacaccaca
aaggcagtgatcactttgcagcctccatgggtcagcgtgttccaagaggaaaccgtaacc
ttgcactgtgaggtgctccatctgcctgggagcagctccacacagtggtttctcaatggc
acagccactcagacctcgacccccagctacagaatcacctctgccagtgtcaatgacagt
ggtgaatacaggtgccagagaggtctctcagggcgaagtgaccccatacagctggaaatc
cacagaggctggctactactgcaggtctccagcagagtcttcatggaaggagaacctctg
gccttgaggtgtcatgcgtggaaggataagctggtgtacaatgtgctttactatcgaaat
ggcaaagcctttaagtttttccactggaattctaacctcaccattctgaaaaccaacata
agtcacaatggcacctaccattgctcaggcatgggaaagcatcgctacacatcagcagga
atatcacaatacactgtgaaaggcctccagttaccaactcctgtctggtttcatgtcctt
ttctatctggcagtgggaataatgtttttagtgaacactgttctctgggtgacaatacgt
aaagaactgaaaagaaagaaaaagtggaatttagaaatctctttggattctggtcatgag
aagaaggtaatttccagccttcaagaagacagacatttagaagaagagctgaaatgtcag
gaacaaaaagaagaacagctgcaggaaggggtgcaccggaaggagccccagggggccacg
tagcag