>sp|Q8BAC4-1|M2_I18A0 Isoform M2 of Matrix protein 2 OS=Influenza A virus (strain A/Brevig Mission/1/1918 H1N1) OX=88776 GN=M MSLLTEVETPTRNEWGCRCNDSSDPLVIAASIIGILHLILWILDRLFFKCIYRRLKYGLK RGPSTEGVPESMREEYRKEQQSAVDVDDGHFVNIELE