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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) 
>AJ132502|VSIG4*01|Homo sapiens|F|EX1|
MGILLGLLLLGHLTVDTY
>AJ132502|VSIG4*01|Homo sapiens|F|EX2|[D1]|V-LIKE|
GRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQRGSDPVTIFLRDSSGDHIQ
QAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTPDGNQVVRDKITELRVQK
>AJ132502|VSIG4*01|Homo sapiens|F|EX3|[D2]|C-LIKE|
LSVSKPTVTTGSGYGFTVPQGMRISLQCQARGSPPISYIWYKQQTNNQEPIKVATLSTLL
FKPAVIADSGSYFCTAKGQVGSEQHSDIVKFVVK
>AJ132502|VSIG4*01|Homo sapiens|F|EX4|
DSSKLLKTKTEAPTTMTYPLK
>AJ132502|VSIG4*01|Homo sapiens|F|EX5|
ATSTVKQSWDWTTDMDGYLGETSAGP
>AJ132502|VSIG4*01|Homo sapiens|F|EX6|
GKSLPVFAIILIISLCCMVVFTMAYIMLCRKTSQQ
>AJ132502|VSIG4*01|Homo sapiens|F|EX7|
EHVYEAA
>AJ132502|VSIG4*01|Homo sapiens|F|EX8|
RAHAREANDSGETMRVAIFASGCSSDEPTSQNLGNNYSDEPCIGQEYQIIAQINGNYARL
LDTVPLDYEFLATEGKSVC
>VSIG4*01|Homo sapiens|F|EX1-8|
MGILLGLLLLGHLTVDTYGRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQR
GSDPVTIFLRDSSGDHIQQAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTP
DGNQVVRDKITELRVQKLSVSKPTVTTGSGYGFTVPQGMRISLQCQARGSPPISYIWYKQ
QTNNQEPIKVATLSTLLFKPAVIADSGSYFCTAKGQVGSEQHSDIVKFVVKDSSKLLKTK
TEAPTTMTYPLKATSTVKQSWDWTTDMDGYLGETSAGPGKSLPVFAIILIISLCCMVVFT
MAYIMLCRKTSQQEHVYEAARAHAREANDSGETMRVAIFASGCSSDEPTSQNLGNNYSDE
PCIGQEYQIIAQINGNYARLLDTVPLDYEFLATEGKSVC*
>AY358341|VSIG4*01|Homo sapiens|F|EX1|
MGILLGLLLLGHLTVDTY
>AY358341|VSIG4*01|Homo sapiens|F|EX2|[D1]|V-LIKE|
GRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQRGSDPVTIFLRDSSGDHIQ
QAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTPDGNQVVRDKITELRVQK
>AY358341|VSIG4*01|Homo sapiens|F|EX3|[D2]|C-LIKE|
LSVSKPTVTTGSGYGFTVPQGMRISLQCQARGSPPISYIWYKQQTNNQEPIKVATLSTLL
FKPAVIADSGSYFCTAKGQVGSEQHSDIVKFVVK
>AY358341|VSIG4*01|Homo sapiens|F|EX4|
DSSKLLKTKTEAPTTMTYPLK
>AY358341|VSIG4*01|Homo sapiens|F|EX5|
ATSTVKQSWDWTTDMDGYLGETSAGP
>AY358341|VSIG4*01|Homo sapiens|F|EX6|
GKSLPVFAIILIISLCCMVVFTMAYIMLCRKTSQQ
>AY358341|VSIG4*01|Homo sapiens|F|EX7|
EHVYEAA
>VSIG4*01|Homo sapiens|F|EX1-7|Splicing B|
MGILLGLLLLGHLTVDTYGRPILEVPESVTGPWKGDVNLPCTYDPLQGYTQVLVKWLVQR
GSDPVTIFLRDSSGDHIQQAKYQGRLHVSHKVPGDVSLQLSTLEMDDRSHYTCEVTWQTP
DGNQVVRDKITELRVQKLSVSKPTVTTGSGYGFTVPQGMRISLQCQARGSPPISYIWYKQ
QTNNQEPIKVATLSTLLFKPAVIADSGSYFCTAKGQVGSEQHSDIVKFVVKDSSKLLKTK
TEAPTTMTYPLKATSTVKQSWDWTTDMDGYLGETSAGPGKSLPVFAIILIISLCCMVVFT
MAYIMLCRKTSQQEHVYEAA*