title: Use of mutants of Rhodopseudomonas spheroides for preparation of bacteriochlorophyll precursors.
mesh_terms: D000645:Ammonium Sulfate; D002734:Chlorophyll / Q000096:biosynthesis*; D005069:Evaluation Studies as Topic; D008274:Magnesium; D008722:Methods; D009154:Mutation; D010860:Pigments, Biological / Q000378:metabolism; D012242:Rhodobacter sphaeroides / Q000378:metabolism*; D013053:Spectrophotometry
chemical_list: D010860:Pigments, Biological; D002734:Chlorophyll; D008274:Magnesium; D000645:Ammonium Sulfate