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) 
>NC_000083|MH2-AA*01|Mus musculus|F|EX1|[D1]|G-ALPHA1-LIKE
MPRSRALILGVLALTTMLSLCGGEDDIE
>NC_000083|MH2-AA*01|Mus musculus|F|EX2|[D1]|G-ALPHA1-LIKE
ADHVGTYGISVYQSPGDIGQYTFEFDGDELFYVDLDKKETVWMLPEFGQLASFDPQGGLQ
NIAVVKHNSRVLTKRSNSTPATN
>NC_000083|MH2-AA*01|Mus musculus|F|EX3|[D2]|C-LIKE|
EAPQATVFPKSPVLLGQPNTLICFVDNIFPPVINITWLRNSKSVADGVYETSFFVNRDYS
FHKLSYLTFIPSDDDIYDCKVEHWGLEEPVLKHW
>NC_000083|MH2-AA*01|Mus musculus|F|EX4|
EPEIPAPMSELTETVVCALGLSVGLVGIVVGTIFIIQGLRSGGTSRHPGPL
>NC_000083|MH2-AA*01|Mus musculus|F|EX1-4|
MPRSRALILGVLALTTMLSLCGGEDDIEADHVGTYGISVYQSPGDIGQYTFEFDGDELFY
VDLDKKETVWMLPEFGQLASFDPQGGLQNIAVVKHNSRVLTKRSNSTPATNEAPQATVFP
KSPVLLGQPNTLICFVDNIFPPVINITWLRNSKSVADGVYETSFFVNRDYSFHKLSYLTF
IPSDDDIYDCKVEHWGLEEPVLKHWEPEIPAPMSELTETVVCALGLSVGLVGIVVGTIFI
IQGLRSGGTSRHPGPL