Biology:Inulosucrase

Short description: Class of enzymes

inulosucrase
Identifiers
EC number	2.4.1.9
CAS number	9030-16-4
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / QuickGO
Search PMC articles PubMed articles NCBI proteins

In enzymology, an inulosucrase (EC 2.4.1.9) is an enzyme that catalyzes the chemical reaction

sucrose + (2,1-beta-D-fructosyl)_n [math]\displaystyle{ \rightleftharpoons }[/math] glucose + (2,1-beta-D-fructosyl)_n+1

Thus, the two substrates of this enzyme are sucrose and (2,1-beta-D-fructosyl)_n, whereas its two products are glucose and (2,1-beta-D-fructosyl)_n+1.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is sucrose:2,1-beta-D-fructan 1-beta-D-fructosyltransferase. This enzyme is also called sucrose 1-fructosyltransferase.

References

• "Transfructosidase from Agave vera cruz Mill". Biochem. J. 61 (1): 171–4. 1955. PMID 13260192. 
• DEDONDER R (1952). "[The glucides of the Jerusalem artichoke. III. Synthesis of glucofructosanes in vitro by extracts of different organs of the artichoke.]". Bull. Soc. Chim. Biol. (Paris) 34 (1–2): 171–82. PMID 14935737. 
• "Transfructosidation in extracts of the tubers of Helianthus tuberosus L". Biochem. J. 49 (4): 529–40. 1951. PMID 14886320.