Saccharomyces cerevisiae - 644283, 649817 Priestia megaterium strain DSM509 649745 Priestia megaterium DSM 509 strain DSM509 649745 Salmonella enterica - 653297 Arabidopsis thaliana - 665692, 729160, 748869 no activity in Desulfovibrio vulgaris gene cysG 696120 Priestia megaterium - 716791 Paracoccus pantotrophus - 730419