| sulfhydryl reagent | Reagents that react with thiol groups, particularly those in proteins. (05 Mar 2000) |
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| sulfhydryl reagents | Chemical agents that react with sh groups. This is a chemically diverse group that is used for a variety of purposes. Among these are enzyme inhibition, enzyme reactivation or protection, and labelling. (12 Dec 1998) |
| sulfide | A compound of sulfur in which the sulfur has a valence of -2; e.g., Na2S, HgS; also, a thioether (i.e., R-S-R', such as lanthionine). Synonym: sulfuret. (05 Mar 2000) |
| sulfide dehydrogenase | <enzyme> From bacteria Registry number: EC 1.8.2.- Synonym: flavocytochrome c, soxb protein, soxb gene product (26 Jun 1999) |
| sulfide oxidase | <enzyme> Catalyses the conversion of hydrogen sulfide to sulfur; isolated from hyphomicrobium neptunium Registry number: EC 1.8.- (26 Jun 1999) |
| sulfide quinone reductase | <enzyme> Part of the photosynthetic electron transport chain in chlorobium; reaction occurs in the dark, in the absence of oxygen Registry number: EC 1.8.5.- Synonym: plastoquinone reductase, sulfide-quinone oxidoreductase, sqr enzyme, sulfide-quinone reductase (26 Jun 1999) |
| sulfides | Chemical groups containing the covalent sulfur bonds -s-. The sulfur atom can be bound to inorganic or organic moieties. (12 Dec 1998) |
| sulfikinase | Generic term for enzymes in EC sub-subclass 2.8.2 catalyzing the transfer of a sulfate group from 3'-phosphoadenylyl sulfate (active sulfate) to the hydroxyl group of an acceptor, producing the sulfated derivative and 3'-phosphoadenosine 5'-phosphate. Synonym: sulfikinase, sulfokinase. (05 Mar 2000) |
| sulfindigotic acid | C8H5NOSO3;formed by the action of sulfuric acid on indigo, a reaction that also yields indigo carmine. (05 Mar 2000) |
| sulfinic acids | Any of the monobasic inorganic or organic acids of sulfur with the general formula rso(oh). (12 Dec 1998) |
| sulfinpyrazone | <chemical> A uricosuric drug that is used to reduce the serum urate levels in gout therapy. It lacks anti-inflammatory, analgesic, and diuretic properties. Pharmacological action: uricosuric agents. Chemical name: 3,5-Pyrazolidinedione, 1,2-diphenyl-4-(2-(phenylsulfinyl)ethyl)- (12 Dec 1998) |
| sulfisomidine | <chemical> A sulfanilamide antibacterial agent. Pharmacological action: anti-infective agents. Chemical name: Benzenesulfonamide, 4-amino-N-(2,6-dimethyl-4-pyrimidinyl)- (12 Dec 1998) |
| sulfisoxazole | <chemical> 4-amino-n-(3,4-dimethyl-5-isoxazolyl)benzenesulfonamide. One of the antibacterial sulfonamides generally used for treatment of infections. It is bacteriostatic against a wide range of gram- negative and gram-positive organisms, but acquired resistance is common. Pharmacological action: anti-infective agents. Chemical name: Benzenesulfonamide, 4-amino-N-(3,4-dimethyl-5-isoxazolyl)- (12 Dec 1998) |
| sulfite | A salt of sulfurous acid; elevated in cases of molybdenum cofactor deficiency. Sulfite dehydrogenase, an oxidoreductase catalyzing the reaction of sulfite with 2 ferricytochrome c and water to sulfate and 2-ferrocytochrome c. Sulfite oxidase, a liver oxidoreductase (haemoprotein) catalyzing the reaction of inorganic sulfite ion with O2 and water to produce sulfate ion and H2O2; a lower activity of this enzyme is observed in cases of molybdenum cofactor deficiency. Sulfite reductase, oxidoreductase catalyzing reduction of sulfite to H2S using some reduced acceptor. (05 Mar 2000) |
| sulfite oxidases | <enzyme> A molybdohemoprotein which catalyses the terminal reaction in the oxidative degradation of sulfur-containing amino acids with the formation of a sulfate. Cytochrome c, ferricyanide and molecular oxygen can act as acceptors. A deficiency is manifested by brain damage and mental deterioration. Utilises ferricytochrome c as acceptor. Uses molecular oxygen. Registry number: EC 1.8.3.1 (12 Dec 1998) |
Synonyms : Alphapharm Brand of Sulfasalazine, Ashbourne Brand of Sulfasalazine, Asulfidine, Azulfadine, Azulfidine, Azulfidine EN-tabs, Colo-Pleon, FNA Brand of Sulfasalazine, Henning Berlin Brand of Sulfasalazine, Heyl Brand of Sulfasalazine, Pleon, Pyralin EN, Salazopyrin
Synonyms :
Synonyms : Adenylyltransferase, Sulfate, Sulfurylase, ATP
Synonyms : Inorganic Sulfates
Synonyms :
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| sulfuric acid |
vitriol: (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry
Ãâó: wordnet.princeton.edu/perl/webwn
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| sulfur |
Sulfur (or Sulphur; see spelling below) is the chemical element in the periodic table that has the symbol S and atomic number 16. It is an abundant, tasteless, odorless, multivalent non-metal. Sulfur, in its native form, is a yellow crystaline solid. In nature, it can be found as the pure element or as sulfide and sulfate minerals. It is an essential element for life and is found in several amino acids. ...
Ãâó: en.wikipedia.org/wiki/Sulfur
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| sulfa drug |
A type of antibiotic used to treat infection. Also called sulfonamide.
Ãâó: www.stjude.org/glossary
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| sulfonamide |
A type of antibiotic used to treat infection. Also called sulfa drug.
Ãâó: www.stjude.org/glossary
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| sulfurous |
Deadly mixture of smoke and fog peaking in the midtwentieth century in large cities. A smog episode in London in 1952 led to 4000 deaths. The sulfuric acid produced from the fossil fuel sources in use at that time led to a choking mixture when incorporated into fog droplets. It is associated with low temperatures, low actinic flux, and high humidity. This form of air pollution was largely eliminated by legislation in the 1950s that led to reduced emissions of SO 2 and smoke. ...
Ãâó: amsglossary.allenpress.com/glossary/browse
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