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

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)
>AP000348|VPREB3*01|Homo sapiens|F|EX1|
MACRCLSFLLMGTFLS
>AP000348|VPREB3*01|Homo sapiens|F|EX2|
AVSQTVLAQLDALLVFPGQVAQLSCTLSPQHVTIRDYGVSWYQQRAGSAPRYLLYYRSEE
DHHRPADIPDRFSAAKDEAHNACVLTISPVQPEDDADYYCSVGYGFSP