>sp|P03390|ENV_MLVF5 Envelope glycoprotein OS=Friend murine leukemia virus (isolate 57) OX=11796 GN=env PE=1 SV=3
MACSTLPKSPKDKIDPRDLLIPLILFLSLKGARSAAPGSSPHQVYNITWEVTNGDRETVW
AISGNHPLWTWWPVLTPDLCMLALSGPPHWGLEYQAPYSSPPGPPCCSGSSGSSAGCSRD
CDEPLTSLTPRCNTAWNRLKLDQVTHKSSEGFYVCPGSHRPREAKSCGGPDSFYCASWGC
ETTGRVYWKPSSSWDYITVDNNLTTSQAVQVCKDNKWCNPLAIQFTNAGKQVTSWTTGHY
WGLRLYVSGRDPGLTFGIRLRYQNLGPRVPIGPNPVLADQLSLPRPNPLPKPAKSPPASN
STPTLISPSPTPTQPPPAGTGDRLLNLVQGAYQALNLTNPDKTQECWLCLVSGPPYYEGV
AVLGTYSNHTSAPANCSVASQHKLTLSEVTGRGLCIGTVPKTHQALCNTTLKIDKGSYYL
VAPTGTTWACNTGLTPCLSATVLNRTTDYCVLVELWPRVTYHPPSYVYSQFEKSYRHKRE
PVSLTLALLLGGLTMGGIAAGVGTGTTALVATQQFQQLHAAVQDDLKEVEKSITNLEKSL
TSLSEVVLQNRRGLDLLFLKEGGLCAALKEECCFYADHTGLVRDSMAKLRERLTQRQKLF
ESSQGWFEGLFNRSPWFTTLISTIMGPLIILLLILLFGPCILNRLVQFVKDRISVVQALV
LTQQYHQLKPLEYEP