KEGG   ENZYME: 2.4.1.139Help
Entry
EC 2.4.1.139                Enzyme                                 

Name
maltose synthase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
alpha-D-glucose-1-phosphate:alpha-D-glucose-1-phosphate 4-alpha-D-glucosyltransferase (dephosphorylating)
Reaction(IUBMB)
2 alpha-D-glucose 1-phosphate + H2O = maltose + 2 phosphate [RN:R00957 R06061]
Reaction(KEGG)
Substrate
alpha-D-glucose 1-phosphate [CPD:C00103];
H2O [CPD:C00001]
Product
maltose [CPD:C00208];
phosphate [CPD:C00009]
Comment
Neither free phosphate nor maltose 1-phosphate is an intermediate in the reaction.
History
EC 2.4.1.139 created 1984
Reference
1
  Authors
Schilling, N.
  Title
Characterization of maltose biosynthesis from alpha-D-glucose-1-phosphate in Spinacia oleracea L.
  Journal
Planta 154 (1982) 87-93.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
81669-74-1

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