Starch synthase

Starch synthase

In enzymology, a starch synthase (EC number|2.4.1.21) is an enzyme that catalyzes the chemical reaction

:ADP-glucose + (1,4-alpha-D-glucosyl)n ightleftharpoons ADP + (1,4-alpha-D-glucosyl)n+1

Thus, the two substrates of this enzyme are ADP-glucose and (1,4-alpha-D-glucosyl)n, whereas its two products are ADP and (1,4-alpha-D-glucosyl)n+1.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. 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, ADPG-starch glucosyltransferase, and starch synthetase. This enzyme participates in starch and sucrose metabolism.

tructural studies

As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes PDB link|1RZU, PDB link|1RZV, PDB link|2BFW, and PDB link|2BIS.

References

*
*
*
*
* Whelan, W.J. and Schultz, J. (Eds.), Miami Winter Symposia, vol. 1, North Holland, Utrecht, 1970, p. 122-138.

External links

::"The CAS registry number for this enzyme class is CAS registry|9030-10-8."

Gene Ontology (GO) codes


Wikimedia Foundation. 2010.

Нужен реферат?

Look at other dictionaries:

  • glycogen (starch) synthase — gly·co·gen (starch) syn·thase (gliґko jən stahrch sinґthās) [EC 2.4.1.11] official nomenclature for glycogen synthase …   Medical dictionary

  • NDP-glucose—starch glucosyltransferase — Identifiers EC number 2.4.1.242 Databases IntEnz IntEnz …   Wikipedia

  • NDP-glucose-starch glucosyltransferase — In enzymology, a NDP glucose starch glucosyltransferase (EC number|2.4.1.242) is an enzyme that catalyzes the chemical reaction:NDP glucose + (1,4 alpha D glucosyl)n ightleftharpoons NDP + (1,4 alpha D glucosyl)n+1Thus, the two substrates of this …   Wikipedia

  • glycogen synthase — gly·co·gen syn·thase (gliґko jən sinґthās) an enzyme of the transferase class that catalyzes the synthesis of glycogen by forming an α 1,4 glucoside linkage between the terminal hydroxyl group of glycogen chain and a glucosyl group …   Medical dictionary

  • Glucose-1,6-bisphosphate synthase — is a type of enzyme called a phosphotransferase and is involved in mammalian starch and sucrose metabolism (KEGG, [http://www.brenda.uni koeln.de/php/result flat.php4?ecno=2.7.1.106 2.7.1.106] ). It catalyzes the transfer of a phosphate group… …   Wikipedia

  • N-acetyllactosamine synthase — is a galactosyltransferase enzyme. It is a component of lactose synthase. It is classified under EC 2.4.1.90. See also N Acetylglucosamine External links MeSH N acetyllactosamine+synthase …   Wikipedia

  • Cellulose synthase (UDP-forming) — In enzymology, a cellulose synthase (UDP forming) (EC number|2.4.1.12) is an enzyme that catalyzes the chemical reaction:UDP glucose + (1,4 beta D glucosyl)n ightleftharpoons UDP + (1,4 beta D glucosyl)n+1Thus, the two substrates of this enzyme… …   Wikipedia

  • Alpha,alpha-trehalose-phosphate synthase (UDP-forming) — In enzymology, an alpha,alpha trehalose phosphate synthase (UDP forming) (EC number|2.4.1.15) is an enzyme that catalyzes the chemical reaction:UDP glucose + D glucose 6 phosphate ightleftharpoons UDP + alpha,alpha trehalose 6 phosphateThus, the… …   Wikipedia

  • 1,4-beta-D-xylan synthase — In enzymology, a 1,4 beta D xylan synthase (EC number|2.4.2.24) is an enzyme that catalyzes the chemical reaction:UDP D xylose + (1,4 beta D xylan)n ightleftharpoons UDP + (1,4 beta D xylan)n+1Thus, the two substrates of this enzyme are UDP D… …   Wikipedia

  • Cellulose synthase (GDP-forming) — In enzymology, a cellulose synthase (GDP forming) (EC number|2.4.1.29) is an enzyme that catalyzes the chemical reaction:GDP glucose + (1,4 beta D glucosyl)n ightleftharpoons GDP + (1,4 beta D glucosyl)n+1Thus, the two substrates of this enzyme… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”