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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)
>AY293285|BTLA*01|Mus musculus|F|EX1|L-REGION|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRN
>AY293285|BTLA*01|Mus musculus|F|EX2|[D]|C-LIKE|
DEECEVQLNIKRNSKHSAWTGELFKIECPVKYCVHRPNVTWCKHNGTIWVPLEVGPQLYT
SWEENRSVPVFVLHFKPIHLSDNGSYSCSTNFNSQVINSHSVTIHVR
>AY293285|BTLA*01|Mus musculus|F|EX3|CO|
ERTQNSSEHPLI
>AY293285|BTLA*01|Mus musculus|F|EX4|CO+TM+CY|
TVSDIPDATNASGPSTMEERPGRTWLLYTLLPLGALLLLLACVCLLCFLKRIQ
>AY293285|BTLA*01|Mus musculus|F|EX5|CY|
GKEKKPSDLAGRDTNL
>AY293285|BTLA*01|Mus musculus|F|EX6|CY|
VDIPASSRTNHQALPSGTGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGR
NPRQENNMQEAPTEYASICVRS
>BTLA*01|Mus musculus|F|EX1-6|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRNDEECEVQLNIKRNSKHSAWTGELF
KIECPVKYCVHRPNVTWCKHNGTIWVPLEVGPQLYTSWEENRSVPVFVLHFKPIHLSDNG
SYSCSTNFNSQVINSHSVTIHVRERTQNSSEHPLITVSDIPDATNASGPSTMEERPGRTW
LLYTLLPLGALLLLLACVCLLCFLKRIQGKEKKPSDLAGRDTNLVDIPASSRTNHQALPS
GTGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGRNPRQENNMQEAPTEYA
SICVRS
>BC108964|BTLA*02|Mus musculus|F|EX1|L-REGION|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRN
>BC108964|BTLA*02|Mus musculus|F|EX2|[D]|C-LIKE|
DEECEVQLNIKRNSKHSAWTGELFKIECPVKYCVHRPHVTWCKHNGTIWVPLEVGPQLYT
SWEENRSVPVFVLHFKPIHLSDNGSYSCSTNFNSQVINSHSVTIHVR
>BC108964|BTLA*02|Mus musculus|F|EX3|CO|
ERTQNSSEHPLI
>BC108964|BTLA*02|Mus musculus|F|EX4|CO+TM+CY|
TVSDIPDATNASGPSTMEERPGRTWLLYTLLPLGALLLLLACVCLLCFLKRIQ
>BC108964|BTLA*02|Mus musculus|F|EX5|CY|
GKEKKPSDLAGRDTNL
>BC108964|BTLA*02|Mus musculus|F|EX6|CY|
VDIPASSRTNHQALPSGTGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGR
NPRQENNMQEAPTEYASICVRS
>BTLA*02|Mus musculus|F|EX1-6|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRNDEECEVQLNIKRNSKHSAWTGELF
KIECPVKYCVHRPHVTWCKHNGTIWVPLEVGPQLYTSWEENRSVPVFVLHFKPIHLSDNG
SYSCSTNFNSQVINSHSVTIHVRERTQNSSEHPLITVSDIPDATNASGPSTMEERPGRTW
LLYTLLPLGALLLLLACVCLLCFLKRIQGKEKKPSDLAGRDTNLVDIPASSRTNHQALPS
GTGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGRNPRQENNMQEAPTEYA
SICVRS
>BC108963|BTLA*03|Mus musculus|F|EX1|L-REGION|SplicingB|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRN
>BC108963|BTLA*03|Mus musculus|F|EX2|[D]|C-LIKE|SplicingB|
DEECEVQLNIKRNSKHSAWTGELFKIECPVKYCVHRPNVTWCKHNGTIWVPLEVGPQLYT
SWEENRSVPVFVLHFKPIHLSDNGSYSCSTNFNSQVINSHSVTIHVR
>BC108963|BTLA*03|Mus musculus|F|EX3|CO|SplicingB|
ERTQNSSEHPLI
>BC108963|BTLA*03|Mus musculus|F|EX4|CO+TM+CY|SplicingB|
ISDIPDATNASGPSTMEKRPGRTWLLYTLLPLGALLLLLACVCLLCFLKRIQ
>BC108963|BTLA*03|Mus musculus|F|EX5|CY|SplicingB|
GKEKKPSDLAGRDTNL
>BC108963|BTLA*03|Mus musculus|F|EX6|CY|SplicingB|
VDIPASSRTNHQALPSGTGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGR
NPRQENNMQEAPTEYASICVRS
>BTLA*03|Mus musculus|F|EX1-6|SplicingB|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRNDEECEVQLNIKRNSKHSAWTGELF
KIECPVKYCVHRPNVTWCKHNGTIWVPLEVGPQLYTSWEENRSVPVFVLHFKPIHLSDNG
SYSCSTNFNSQVINSHSVTIHVRERTQNSSEHPLIISDIPDATNASGPSTMEKRPGRTWL
LYTLLPLGALLLLLACVCLLCFLKRIQGKEKKPSDLAGRDTNLVDIPASSRTNHQALPSG
TGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGRNPRQENNMQEAPTEYAS
ICVRS
>AY293285|BTLA*04|Mus musculus|F|EX1|L-REGION|SplicingB|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRN
>AY293285|BTLA*04|Mus musculus|F|EX2|[D]|C-LIKE|SplicingB|
DEECPVQLTITRNSKQSARTGELFKIQCPVKYCVHRPNVTWCKHNGTICVPLEVSPQLYT
SWEENQSVPVFVLHFKPIHLSDNGSYSCSTNFNSQVINSHSVTIHVT
>AY293285|BTLA*04|Mus musculus|F|EX3|CO|SplicingB|
ERTQNSSEHPLI
>AY293285|BTLA*04|Mus musculus|F|EX4|CO+TM+CY|SplicingB|
ISDIPDATNASGPSTMEERPGRTWLLYTLLPLGALLLLLACVCLLCFLKRIQ
>AY293285|BTLA*04|Mus musculus|F|EX5|CY|SplicingB|
GKEKKPSDLAGRDTNL
>AY293285|BTLA*04|Mus musculus|F|EX6|CY|SplicingB|
VDIPASSRTNHQALPSGTGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGR
NPRQENNMQEAPTEYASICVRS
>BTLA*04|Mus musculus|F|EX6|CY|SplicingB|
MKTVPAMLGTPRLFREFFILHLGLWSILCEKATKRNDEECPVQLTITRNSKQSARTGELF
KIQCPVKYCVHRPNVTWCKHNGTICVPLEVSPQLYTSWEENQSVPVFVLHFKPIHLSDNG
SYSCSTNFNSQVINSHSVTIHVTERTQNSSEHPLIISDIPDATNASGPSTMEERPGRTWL
LYTLLPLGALLLLLACVCLLCFLKRIQGKEKKPSDLAGRDTNLVDIPASSRTNHQALPSG
TGIYDNDPWSSMQDESELTISLQSERNNQGIVYASLNHCVIGRNPRQENNMQEAPTEYAS
ICVRSVDAHLKSEQTEASTRQNSQVLLSEAGIYDNDPDLCFRMQEGSEVCSNPCLEENKP
GIVYASLNHSVIGLNSRLARNVKEAPTEYASICVRS
>BTLA*04|Homo sapiens|F|EX1-5|
MKTLPAMLGTGKLFWVFFLIPYLDIWNIHGKESCDVQLYIKRQSEHSILAGDPFELECPV
KYCANRPHVTWCKLNGTTCVKLEDRQTSWKEEKNISFFILHFEPMLPNDNGSYRCSANFQ
SNLIESHSTTLYVTDVKGASERPSKDEVASRPWLLYSLLPLGGLPLLITTWFCLFCCLRR
HQGKQNELSDTAGREINLVDAHLKSEQTEASTRQNSQVLLSEAGIYDNDPDLCFRMQEGS
EVCSNPCLEENKPGIVYASLNHSVIGLNSRLARNVKEAPTEYASICVRS