>tr|A0A7K5FW20|A0A7K5FW20_PROAR Histone H2A OS=Probosciger aterrimus GN=H2a4_0 MSGRGKQGGKARAKAKSRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLT AEILELAGNAARDNKKTRIIPRHLQLAIRNDEELNKLLGKVTIAQGGVLPNIQAVLLPKK TDSHKAKAK