title: Sulphur nutrition and metabolism in various species of Neisseria.
abstract: Most Neisseria strains are able to grow with sulphate as a unique source of sulphur. Nevertheless, a cysteine requirement was present in a few strains of N. meningitidis and in 30% of N. flava strains isolated in our laboratory. All strains of N. gonorrhoeae exhibited such a requirement. In every strain tested, the need for cysteine (which can be satisfied by thiosulphate) was linked to the lack of sulphite-reducing-activity. The implications of these findings for the taxonomy and identification of Neisseria are discussed.
mesh_terms: D003545:Cysteine / Q000378:metabolism; D009343:Neisseria / Q000145:classification / Q000201:enzymology / Q000378:metabolism*; D009344:Neisseria gonorrhoeae / Q000378:metabolism; D009345:Neisseria meningitidis / Q000378:metabolism; D050862:Oxidoreductases Acting on Sulfur Group Donors / Q000378:metabolism; D013455:Sulfur / Q000378:metabolism*; D013885:Thiosulfates / Q000378:metabolism
chemical_list: D013885:Thiosulfates; D013455:Sulfur; D050862:Oxidoreductases Acting on Sulfur Group Donors; D003545:Cysteine