>5CQE_1|Chains A, B|Matrix protein 1|Influenza A virus (strain A/Puerto Rico/8/1934 H1N1) (211044) MHHHHHHSSGVDLGTENLYFQSNAMSLLTEVETYVLSIIPSGPLKAEIAQRLEDVFAGKNTDLEVLMEWLKTRPILSPLTKGILGFVFTLTVPSERGLQRRRFVQNALNGNGDPNNMDKAVKLYRKLKREITFHGAKEISLSYSAGALASCMGLIYNRMGAVTTEVAFGLVCATCEQIADSQHRSHRQ