>tr|A3F3C6|A3F3C6_BACSU Tryptophan synthase alpha chain OS=Bacillus subtilis GN=trpA MFKLDLQPSEKLFIPFITAGDPVPEVSIELAKSLQKAGATALELGVAYSDPLADGPVIQR ASKRALDQGMNIVKAIELGGEMKKNGVNIPIILFTYYNPVLQLNKEYFFALLRENHIDGL LVPDLPLEESNSLQEECKSHEVTYISLVAPTSESRLKTIIEQAEGFVYCVSSLGVTGVRN EFNSSVYPFIRTVKNLSTVPVAVGFGISNREQVIKMNEISDGVVVGSALVRKIEELKDRL ISAETRNQALQEFEDYAMAFSGLYSLK