>sp|A4GCH6-1|M2_I83A1 Isoform M2 of Matrix protein 2 OS=Influenza A virus (strain A/Chile/1/1983 H1N1) OX=380985 GN=M MSLLTEVETPIRNEWGCRCNDSSDPLVVAASIIGILHLILWILDRLFFKCIYRLFKHGLK RGPSTEGVPESMREEYREEQQNAVDADDGHFVSIELE