Signal peptidase complex catalytic subunit SEC11 MLSLDFLDDV RRMNKRQLYY QVLNFGMIVS SALMIWKGLM VITGSESPIV VVLRQNGHIK FLTKGDNNAV DDRGLYKQGQ HWLEKKDVVG RARGFVPYIG IVTILMNDYP KFKYAVLFLL GLFVLVHRE