title: The similarity of tryptophan synthetases of Anabaena variabilis and Chlorella ellipsoidea with that of bacteria.
mesh_terms: D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002621:Chemistry; D000460:Chlorophyta / Q000201:enzymology*; D003429:Cross Reactions; D000458:Cyanobacteria / Q000201:enzymology*
chemical_list: D002247:Carbon Isotopes