Entry
Name
amylosucrase;
sucrose---glucan glucosyltransferase;
sucrose-1,4-alpha-glucan glucosyltransferase;
sucrose:1,4-alpha-D-glucan 4-alpha-D-glucosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
sucrose:(1->4)-alpha-D-glucan 4-alpha-D-glucosyltransferase
Reaction(IUBMB)
sucrose + [(1->4)-alpha-D-glucosyl]n = D-fructose + [(1->4)-alpha-D-glucosyl]n+1 [RN:
R01823 R06052 ]
Reaction(KEGG)
Substrate
sucrose [CPD:
C00089 ];
[(1->4)-alpha-D-glucosyl]n
Product
D-fructose [CPD:
C00095 ];
[(1->4)-alpha-D-glucosyl]n+1
Comment
The glucansucrases transfer a D-glucosyl residue from sucrose to a glucan chain. They are classified based on the linkage by which they attach the transferred residue. In some cases, in which the enzyme forms more than one linkage type, classification relies on the relative proportion of the linkages that are generated. This enzyme extends the glucan chain by an alpha(1->4) linkage.
History
EC 2.4.1.4 created 1961
Pathway
ec00500 Starch and sucrose metabolism
Orthology
Genes
XFU : XFF4834R_chr11570(suxB)
XPH : XppCFBP6546_16730(XppCFBP6546P_16730)
THIO : AYJ59_03295 AYJ59_04265
RHEI : ATY27_05280 ATY27_11670
THIP : N838_01810 N838_02210
LMIR : NCTC12852_00736(ams)
CLOD : C820_002157(ams_1) C820_002792(ams_2)
BPRO : PMF13cell1_01621(ams)
BLAB : EYS05_05235 EYS05_10995
SCAG : ACI3DM_07850 ACI3DM_09320
MOO : BWL13_00080(ams_1) BWL13_00499(ams_2)
AAGI : NCTC2676_1_02217(ams)
KPL : KPaMU14_00335 KPaMU14_11950
PAUS : NCTC13651_01246(ams)
PPC : HMPREF9154_0828(ams)
NAQU : ENKNEFLB_03752(ams)
AHW : NCTC11636_01763(ams)
ASLA : NCTC11923_00674(ams)
AVC : NCTC10951_02248(ams)
» show all
Taxonomy
Reference
Authors
AVIGAD G, FEINGOLD DS, HESTRIN S.
Title
Enzymatic synthesis and reactions of a sucrose isomer alpha-D-galactopyranosyl-beta-D-fructofuranoside.
Journal
J Biol Chem 224:295-307 (1957)
Reference
Authors
HEHRE EJ
Title
Enzymic synthesis of polysaccharides: a biological type of polymerization.
Journal
Reference
Authors
HEHRE EJ
Title
Synthesis of a polysaccharide of the starch-glycogen class from sucrose by a cell free, bacterial enzyme system.
Journal
J Biol Chem 177:267-79 (1949)
Other DBs
ExplorEnz - The Enzyme Database: 2.4.1.4
ExPASy - ENZYME nomenclature database: 2.4.1.4
BRENDA, the Enzyme Database: 2.4.1.4
LinkDB
All DBs