Maltose synthase

maltose synthase
Identifiers
EC number	2.4.1.139
CAS number	81669-74-1
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 / EGO
Search PMC articles PubMed articles NCBI proteins

In enzymology, a maltose synthase (EC 2.4.1.139) is an enzyme that catalyzes the chemical reaction

2 alpha-D-glucose 1-phosphate + H₂O $\rightleftharpoons$ maltose + 2 phosphate

Thus, the two substrates of this enzyme are alpha-D-glucose 1-phosphate and H₂O, whereas its two products are maltose and phosphate.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is alpha-D-glucose-1-phosphate:alpha-D-glucose-1-phosphate 4-alpha-D-glucosyltransferase (dephosphorylating).

References

• Schilling N (1982). "Characterization of maltose biosynthesis from alpha-D-glucose-1-phosphate in Spinacia oleracea L". Planta 154: 87–93. doi:10.1007/BF00385502.