Starch synthase (original) (raw)
L'amidon synthase est une glycosyltransférase qui catalyse la réaction : + [(1→4)-α-D-glucosyle]n ADP + [(1→4)-α-D-glucosyle]n+1. Cette enzyme intervient dans la biosynthèse de l'amidon chez les plantes. Il en existerait cinq isoformes : GBSS, liée à la biosynthèse de l'amylose, et SS1, SS2, SS3 et SS4. Ces isoformes joueraient des rôles différents dans la synthèse de l'amylopectine.
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| dbo:abstract | L'amidon synthase est une glycosyltransférase qui catalyse la réaction : + [(1→4)-α-D-glucosyle]n ADP + [(1→4)-α-D-glucosyle]n+1. Cette enzyme intervient dans la biosynthèse de l'amidon chez les plantes. Il en existerait cinq isoformes : GBSS, liée à la biosynthèse de l'amylose, et SS1, SS2, SS3 et SS4. Ces isoformes joueraient des rôles différents dans la synthèse de l'amylopectine. (fr) La almidón sintasa (EC 2.4.1.21) es una enzima que cataliza la síntesis del polímero almidón. Cataliza la adición de una molécula de glucosa al almidón en formación mediante la reacción: (1,4-α-D-glucosil)n + ADP-glucosa (1,4-α-D-glucosil)n+1 + ADP La enzima también produce glucógeno en células bacterianas. La enzima similar (glucógeno sintasa) de los mamíferos utiliza UDP-glucosa para producir glucógeno. (es) In enzymology, a starch synthase (EC 2.4.1.21) is an enzyme that catalyzes the chemical reaction ADP-glucose + (1,4-alpha-D-glucosyl)n ADP + (1,4-alpha-D-glucosyl)n+1 Thus, the two substrates of this enzyme are and a chain of D-glucose residues joined by 1,4-alpha-glycosidic bonds, whereas its two products are ADP and an elongated chain of glucose residues. Plants use these enzymes in the biosynthesis of starch. This enzyme belongs to the family of hexosyltransferases, specifically the glycosyltransferases. The systematic name of this enzyme class is ADP-glucose:1,4-alpha-D-glucan 4-alpha-D-glucosyltransferase. Other names in common use include ADP-glucose-starch glucosyltransferase, adenosine diphosphate glucose-starch glucosyltransferase, adenosine diphosphoglucose-starch glucosyltransferase, ADP-glucose starch synthase, ADP-glucose synthase, ADP-glucose transglucosylase, ADP-glucose-starch glucosyltransferase, ADPG starch synthetase, and ADPG-starch glucosyltransferase Five isoforms seems to be present. GBSS which is linked to amylose synthesis. The others are SS1, SS2, SS3 and SS4. These have different roles in amylopectin synthesis. New work implies that SS4 is important for granule initiation. (Szydlowski et al., 2011) (en) La amido sintasi è un enzima appartenente alla classe delle transferasi, che catalizza la seguente reazione: ADP-glucosio + (1,4α-D-glucosile)n ⇄ ADP + (1,4α-D-glucosile)n+1 Il nome accettato varia seconda della fonte dell'enzima e della natura del suo prodotto di sintesi, e.g. amido sintasi, glicogeno sintasi batterica. È simile alla glicogeno(amido) sintasi (numero EC 2.4.1.11), ma il nucleoside difosfato preferito per il substrato di zucchero è l'ADP-glucosio. Il nome copre l'amido e la glicogeno sintasi che utilizzano l'ADP-glucosio. (it) |
| dbo:ecNumber | 2.4.1.21 |
| dbo:thumbnail | wiki-commons:Special:FilePath/GlycogenSyn_Wiki.png?width=300 |
| dbo:wikiPageID | 14663192 (xsd:integer) |
| dbo:wikiPageLength | 3710 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1049332593 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:List_of_enzymes dbr:Enzymology dbc:EC_2.4.1 dbc:Enzymes_of_known_structure dbr:Chemical_reaction dbr:Enzyme dbr:Glucose dbr:Starch dbr:Protein_Data_Bank dbr:Substrate_(biochemistry) dbr:Adenosine_diphosphate dbr:Agrobacterium_tumefaciens dbr:Glycosidic_bond dbr:Glycosyltransferase dbr:Product_(chemistry) dbc:Starch dbr:Hexosyltransferase dbr:Tertiary_structure dbr:Plant dbr:Catalysis dbr:X-ray_crystallography dbr:ADP-glucose |
| dbp:caption | Crystal structure of glycogen synthase 1 from Agrobacterium tumefaciens (en) |
| dbp:casNumber | 9030-10-08 (xsd:date) |
| dbp:ecNumber | 2.400000 (xsd:double) |
| dbp:goCode | 9011 (xsd:integer) |
| dbp:iubmbEcNumber | 2 (xsd:integer) |
| dbp:name | starch synthase (en) |
| dbp:wikiPageUsesTemplate | dbt:2.4-enzyme-stub dbt:Cite_journal dbt:EC_number dbt:Enzyme dbt:Enzymes dbt:Glycosyltransferases dbt:PDB_link dbt:Portal_bar dbt:Reflist |
| dct:subject | dbc:EC_2.4.1 dbc:Enzymes_of_known_structure dbc:Starch |
| rdf:type | owl:Thing dbo:Biomolecule wikidata:Q206229 wikidata:Q8047 yago:Abstraction100002137 yago:Activator114723079 yago:Catalyst114723628 yago:Chemical114806838 yago:Compound114818238 yago:Enzyme114732946 yago:Macromolecule114944888 yago:Material114580897 yago:Matter100020827 yago:Molecule114682133 yago:OrganicCompound114727670 yago:Part113809207 yago:PhysicalEntity100001930 yago:Protein114728724 yago:Relation100031921 dbo:Enzyme yago:Substance100019613 yago:Thing100002452 yago:Unit109465459 yago:WikicatEnzymesOfKnownStructure |
| rdfs:comment | L'amidon synthase est une glycosyltransférase qui catalyse la réaction : + [(1→4)-α-D-glucosyle]n ADP + [(1→4)-α-D-glucosyle]n+1. Cette enzyme intervient dans la biosynthèse de l'amidon chez les plantes. Il en existerait cinq isoformes : GBSS, liée à la biosynthèse de l'amylose, et SS1, SS2, SS3 et SS4. Ces isoformes joueraient des rôles différents dans la synthèse de l'amylopectine. (fr) La almidón sintasa (EC 2.4.1.21) es una enzima que cataliza la síntesis del polímero almidón. Cataliza la adición de una molécula de glucosa al almidón en formación mediante la reacción: (1,4-α-D-glucosil)n + ADP-glucosa (1,4-α-D-glucosil)n+1 + ADP La enzima también produce glucógeno en células bacterianas. La enzima similar (glucógeno sintasa) de los mamíferos utiliza UDP-glucosa para producir glucógeno. (es) La amido sintasi è un enzima appartenente alla classe delle transferasi, che catalizza la seguente reazione: ADP-glucosio + (1,4α-D-glucosile)n ⇄ ADP + (1,4α-D-glucosile)n+1 Il nome accettato varia seconda della fonte dell'enzima e della natura del suo prodotto di sintesi, e.g. amido sintasi, glicogeno sintasi batterica. È simile alla glicogeno(amido) sintasi (numero EC 2.4.1.11), ma il nucleoside difosfato preferito per il substrato di zucchero è l'ADP-glucosio. Il nome copre l'amido e la glicogeno sintasi che utilizzano l'ADP-glucosio. (it) In enzymology, a starch synthase (EC 2.4.1.21) is an enzyme that catalyzes the chemical reaction ADP-glucose + (1,4-alpha-D-glucosyl)n ADP + (1,4-alpha-D-glucosyl)n+1 Thus, the two substrates of this enzyme are and a chain of D-glucose residues joined by 1,4-alpha-glycosidic bonds, whereas its two products are ADP and an elongated chain of glucose residues. Plants use these enzymes in the biosynthesis of starch. (en) |
| rdfs:label | Almidón sintasa (es) Amidon synthase (fr) Amido sintasi (it) Starch synthase (en) |
| owl:sameAs | freebase:Starch synthase yago-res:Starch synthase wikidata:Starch synthase dbpedia-es:Starch synthase dbpedia-fr:Starch synthase dbpedia-it:Starch synthase dbpedia-sh:Starch synthase dbpedia-sr:Starch synthase https://global.dbpedia.org/id/3Lb96 |
| prov:wasDerivedFrom | wikipedia-en:Starch_synthase?oldid=1049332593&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/GlycogenSyn_Wiki.png |
| foaf:isPrimaryTopicOf | wikipedia-en:Starch_synthase |
| foaf:name | starch synthase (en) |
| is dbo:wikiPageRedirects of | dbr:ADP-glucose:(1-4)-alpha-D-glucan_4-alpha-D-glucosyltransferase dbr:EC_2.4.1.21 |
| is dbo:wikiPageWikiLink of | dbr:Starch dbr:Amylopectin dbr:List_of_EC_numbers_(EC_2) dbr:List_of_MeSH_codes_(D08) dbr:Starch_gelatinization dbr:Potato dbr:Waxy_corn dbr:ADP-glucose:(1-4)-alpha-D-glucan_4-alpha-D-glucosyltransferase dbr:EC_2.4.1.21 |
| is foaf:primaryTopic of | wikipedia-en:Starch_synthase |
