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IMGT reference sequences in FASTA format:

Amino acid sequences with 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) 
>M18222|CD3G*01|Mus musculus|F|EX1|
MEQRKGLAGLFLVISLLQ
>M18223|CD3G*01|Mus musculus|F|[D]|EX2|C-LIKE|
...GTVAQTNK
>M18224|CD3G*01|Mus musculus|F|[D]|EX3|C-LIKE|
AKNLVQVDGSRGD.....GSVLLTCGLTDK.......TIKWLKDG.......SIISPLNA
..............TKNTWNLGNNAK..DPRGTYQCQGA......KETSNPLQVYYR
>M18225|CD3G*01|Mus musculus|F|EX4|
MCENCIELNIGTISGFIFAEVISIFFLALGVYLIAGQDGVRQSR
>M18226|CD3G*01|Mus musculus|F|EX5|
ASDKQTLLQNEQLYQ
>M18227|CD3G*01|Mus musculus|F|EX6|
PLKDREYDQYSHLQGNQLRKK
>M58149|CD3G*02|Mus musculus|F|EX1|
MEQRKGLAGLFLVMSLLQ
>M58149|CD3G*02|Mus musculus|F|[D]|EX2|C-LIKE|
...GTVAQTNK
>M58149|CD3G*02|Mus musculus|F|[D]|EX3|C-LIKE|
AKNLVQVDGSRG...DGSVLLTCGLTD.......KTIKWLKDGSIISP..LNATK.....
..............NTWNLGNNAK..DPRGTYQCQGA.......KETSNPLQVYYR
>M58149|CD3G*02|Mus musculus|F|EX4|
MCENCIELNIGTISGFIFAEVISIFFLALGVYLIAGQDGVRQSR
>M58149|CD3G*02|Mus musculus|F|EX5|
ASDKQTLLQNEQLYQ
>M58149|CD3G*02|Mus musculus|F|EX6|
PLKDREYDQYSHLQGNQLRKK