>tr|A3F3S8|A3F3S8_BACIU Tryptophan synthase alpha chain OS=Bacillus subtilis subsp. subtilis str. SMY GN=trpA MFKLDLQPSEKLFIPFITAGDPVPEVSIELAKSLQKAGATALELGVAYSDPLADGPVIQR ASKRALDQGMNIVKAIELGGEMKKNGVNIPIILFTYYNPVLQLNKEYFFALLRENHIDGL LVPDLPLEESNSLQEECKSHEVTYISLVAPTSESRLKTIIEQAEGFVYCVSSLGVTGVRN EFNSSVYPFIRTVKNLSTVPVAVGFGISNREQVIKMNEISDGVVVGSALVRKIEELKDRL ISAETRNQALQEFEDYAMAFSGLYSLK