>sp|P35938|M2_I77AB Matrix protein 2 OS=Influenza A virus (strain A/USSR/90/1977 H1N1) OX=381516 GN=M PE=1 SV=1 MSLLTEVETPIRNEWGCRCNDSSDPLVVAASIIGILHLILWILDRLFFKCIYRLFKHGLK RGPSTEGVPESMREEYRKEQQNAVDADDSHFVNIELE