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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) 
>M90721|FCGR2A*01|Homo Sapiens|F|EX1
METQMSQNVCPRNLWLLQPLTVLLLL
>M90722|FCGR2A*01|Homo sapiens|F|EX2
SADSQA
>M90723|FCGR2A*01|Homo sapiens|F|EX3|D1|C-LIKE|
APPKAVLKLEPPWINVLQEDSVTLTCQGARSPESDSIQWFHNGNLIPTHTQPSYRFKANN
NDSGEYTCQTGQTSLSDPVHLTVLS
>M90724|FCGR2A*01|Homo sapiens|F|EX4|D2|C-LIKE|
WLVLQTPHLEFQEGETIMLRCHSWKDKPLVKVTFFQNGKSQKFSHLDPTFSIPQANHSHS
GDYHCTGNIGYTLFSSKPVTITVQ
>M90725|FCGR2A*01|Homo sapiens|F|EX5
PSMGSSSPMGIIVAVVIATAVAAIVAAVVALIYCRKKRIS
>NT_004668|FCGR2A*01|Homo sapiens|F|EX6
NSTDPVKAAQFE
>M90727|FCGR2A*01|Homo sapiens|F|EX7
PPGRQMIAIRKRQLEETNNDYETADGGYMTLNPRAPTDDDKNIYLTLPPNDHVNSNN
>M90721|FCGR2A*01|Homo Sapiens|F
METQMSQNVCPRNLWLLQPLTVLLLLASADSQAAAPPKAVLKLEPPWINVLQEDSVTLTC
QGARSPESDSIQWFHNGNLIPTHTQPSYRFKANNNDSGEYTCQTGQTSLSDPVHLTVLSE
WLVLQTPHLEFQEGETIMLRCHSWKDKPLVKVTFFQNGKSQKFSHLDPTFSIPQANHSHS
GDYHCTGNIGYTLFSSKPVTITVQVPSMGSSSPMGIIVAVVIATAVAAIVAAVVALIYCR
KKRISANSTDPVKAAQFEPPGRQMIAIRKRQLEETNNDYETADGGYMTLNPRAPTDDDKN
IYLTLPPNDHVNSNN