The Enzyme Commission number ( EC number ) is a numerical classification scheme for enzymes , based on the chemical reactions they catalyze . As a system of enzyme nomenclature , every EC number is associated with a recommended name for the corresponding enzyme-catalyzed reaction.
11-467: (Redirected from SCD ) Scd or SCD may refer to: In medicine [ edit ] Salicylate decarboxylase , an enzyme Schnyder crystalline corneal dystrophy , an eye disease Sequential compression device , to improve blood flow Sickle-cell disease , a blood disease Specific Carbohydrate Diet Stearoyl-CoA desaturase-1 , an enzyme Sudden cardiac death Superior canal dehiscence , of
22-508: A publication St. Cloud station , Minnesota, U.S., Amtrak code Strictly Come Dancing , a British TV show Sylacauga Municipal Airport , Alabama, US, FAA identifier Syrian Civil Defense or the White Helmets , a volunteer organisation Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Scd . If an internal link led you here, you may wish to change
33-404: Is an enzyme with systematic name salicylate carboxy-lyase . This enzyme catalyses the following chemical reaction In the reverse direction the enzyme catalyses the regioselective carboxylation of phenol into salicylate. Enzyme Commission number EC numbers do not specify enzymes but enzyme-catalyzed reactions. If different enzymes (for instance from different organisms) catalyze
44-642: Is different from the 'FORMAT NUMBER' Oxidation /reduction reactions; transfer of H and O atoms or electrons from one substance to another Similarity between enzymatic reactions can be calculated by using bond changes, reaction centres or substructure metrics (formerly EC-BLAST], now the EMBL-EBI Enzyme Portal). Before the development of the EC number system, enzymes were named in an arbitrary fashion, and names like old yellow enzyme and malic enzyme that give little or no clue as to what reaction
55-665: The GDPR Other uses [ edit ] Satélite de Coleta de Dados , Brazilian satellites SCD-1 and SCD-2 Sc.D. , Doctor of Science degree Scottish country dance Senior College Dún Laoghaire , now Blackrock Further Education Institute , Ireland Service-Connected Discharge a category of discharge from the United States Army Social communication disorder , a language disorder Specialist Crime Directorate (Metropolitan Police) , London, former branch Sports Collectors Digest ,
66-727: The International Congress of Biochemistry in Brussels set up the Commission on Enzymes under the chairmanship of Malcolm Dixon in 1955. The first version was published in 1961, and the Enzyme Commission was dissolved at that time, though its name lives on in the term EC Number . The current sixth edition, published by the International Union of Biochemistry and Molecular Biology in 1992 as
77-526: The inner ear In engineering and information technology [ edit ] System context diagram /dev/ scd , SCSI audio-oriented optical disk drives Slowly changing dimension , a datawarehousing term for data that changes slowly The Scientific Computing Division of the National Center for Atmospheric Research Substation Configuration Description for electrical substations Special category data , sensitive data as defined by
88-417: The letters "EC" followed by four numbers separated by periods. Those numbers represent a progressively finer classification of the enzyme. Preliminary EC numbers exist and have an 'n' as part of the fourth (serial) digit (e.g. EC 3.5.1.n3). For example, the tripeptide aminopeptidases have the code "EC 3.4.11.4", whose components indicate the following groups of enzymes: NB:The enzyme classification number
99-503: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Scd&oldid=1183703218 " Category : Disambiguation pages Hidden categories: Articles containing Portuguese-language text Short description is different from Wikidata All article disambiguation pages All disambiguation pages Salicylate decarboxylase Salicylate decarboxylase ( EC 4.1.1.91 , salicylic acid decarboxylase , Scd )
110-419: The same reaction, then they receive the same EC number. Furthermore, through convergent evolution , completely different protein folds can catalyze an identical reaction (these are sometimes called non-homologous isofunctional enzymes ) and therefore would be assigned the same EC number. By contrast, UniProt identifiers uniquely specify a protein by its amino acid sequence. Every enzyme code consists of
121-457: Was catalyzed were in common use. Most of these names have fallen into disuse, though a few, especially proteolyic enzymes with very low specificity, such as pepsin and papain , are still used, as rational classification on the basis of specificity has been very difficult. By the 1950s the chaos was becoming intolerable, and after Hoffman-Ostenhof and Dixon and Webb had proposed somewhat similar schemes for classifying enzyme-catalyzed reactions,
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