>tr|A3F3E5|A3F3E5_BACIU Tryptophan synthase alpha chain OS=Bacillus subtilis subsp. subtilis NCIB 3610 = ATCC 6051 = DSM 10 GN=trpA MFKLDLQPSEKLFIPFITAGDPVPEVSIELAKSLQKAGATALELGVAYSDPLADGPVIQR ASKRALDQGMNIVKAIELGGEMKKNGVNIPIILFTYYNPVLQLNKEYFFALLRENHIDGL LVPDLPLEESNSLQEECKSHEVTYISLVAPTSESRLKTIIEQAEGFVYCVSSLGVTGVRN EFNSSVYPFIRTVKNLSTVPVAVGFGISNREQVIKMNEISDGVVVGSALVRKIEELKDRL ISAETRNQALQEFEDYAMAFSGLYSLK