2.4.1.21: starch synthase (glycosyl-transferring)
This is an abbreviated version!
For detailed information about starch synthase (glycosyl-transferring), go to the full flat file.
Word Map on EC 2.4.1.21
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2.4.1.21
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amylose
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grain
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amylopectin
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endosperm
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pyrophosphorylase
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maize
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wheat
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potato
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waxy
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glucans
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japonica
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debranching
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amyloplasts
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triticum
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aestivum
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indica
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agpase
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kernel
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chain-length
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isoamylase
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adpglucose
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sbeiib
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starch-branching
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homoeologous
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starch-binding
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alpha-glucans
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2.7.7.27
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diphosphate-glucose
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pullulanase
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high-amylose
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hexaploid
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adp-glc
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amylose-free
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spikelet
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grain-filling
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biofuel production
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food industry
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nutrition
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agriculture
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chalky
- 2.4.1.21
- amylose
- grain
- amylopectin
- endosperm
-
pyrophosphorylase
- maize
- wheat
- potato
-
waxy
- glucans
- japonica
-
debranching
- amyloplasts
- triticum
- aestivum
- indica
- agpase
- kernel
-
chain-length
- isoamylase
- adpglucose
- sbeiib
-
starch-branching
-
homoeologous
-
starch-binding
- alpha-glucans
-
2.7.7.27
-
diphosphate-glucose
- pullulanase
-
high-amylose
-
hexaploid
- adp-glc
-
amylose-free
-
spikelet
-
grain-filling
- biofuel production
- food industry
- nutrition
- agriculture
-
chalky
Reaction
Synonyms
adenosine diphosphate glucose-starch glucosyltransferase, adenosine diphosphoglucose-starch glucosyltransferase, ADP-glucose starch synthase, ADP-glucose synthase, ADP-glucose transglucosylase, ADP-glucose-starch glucosyltransferase, ADP-glucose:1,4-alpha-D-glucan 4-alpha-D-glucosyltransferase, ADPG starch synthetase, ADPG-starch glucosyltransferase, AtSS2, AtSSII, AtSSIII, CkGBSS, dull1, GBSS, GBSSI, glgA, glucosyltransferase, adenosine diphosphoglucose-starch, glycogen synthase, glycogen/starch synthase, granule bound starch synthase, granule-bound starch synthase, granule-bound starch synthase I, GSase, OsGBSSII, OsSSIII-1, OsSSIII-2, OsSSIV-1, OsSSIV-2, PvSSI, PvSSII-1, SBD123, SS1, SS4, SSI, SSII, SSII(a), SSIIa, SSIIc, SSIII, SSIII(a), SSIII-1, SSIII-B, SSIII-C, SSIIIa, SSIIIb, SSIV, SSS, SSSI, SSV, starch synthase, starch synthase 1, starch synthase 4, starch synthase I, starch synthase II, starch synthase IIa, starch synthase III, starch synthase III-1, starch synthase III-2, starch synthase III-B, starch synthase IIIa, starch synthase IV, starch synthase IV-1, starch synthase IV-2, starch synthetase, starch-synthase III, starch/glycogen synthase, TaSSIVb, TVAG_258220
ECTree
2.4.1.21 starch synthase (glycosyl-transferring)Advanced search results
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Source Tissue on EC 2.4.1.21 - starch synthase (glycosyl-transferring)
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SOURCE TISSUE 
ORGANISM
UNIPROT
COMMENTARY 
LITERATURE
SOURCE
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activity of starch synthase in the grains follows single-peak curves with the peaks on 24-31 days after pollination. The accumulation rates of starch and its components reach their peaks on 25-32 days after pollination. There is significant positive correlation between adenosine diphosphoglucose diphosphorylase, soluble starch synthase, and starch granule-bound synthase activities
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SSIIa protein is present even in Nipponbare endosperm but is not associated with starch granules at the milky stage of endosperm
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more SSII protein is found in aged leaves than in leaves of other stages
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more SSSI transcript is expressed in leaves than in tubers. Two forms of SSSI, i.e., 72000 Da and 66000 Da, exist in leaves
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the barley shrunken grain mutant M292 has a novel high-amylose starch phenotype caused by a mutation in the starch synthase IIa gene (SsIIa) located at the starch excess-6 (sex6) locus on chromosome 7H of barley. The loss of SSIIa enzyme activity leads to a decrease in amylopectin synthesis to less than 20% of the levels found in wild-type grains
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the SSI activity of an indica rice variety, Kasalath, is significantly lower than that of a japonica rice variety, Nipponbare. The low activity in Kasalath is maintained during seed development The low expression of SSI in Kasalath is controlled at the transcription levels of SSI mRNA
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the content of amylose in SA418 grain is higher than Tainung 67 and SA419 grains throughout the entire grain filling period, possibly due to its superiority to synthesize amylose through GBSS
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transcripts for PvSSI and PvSSII-1 accumulate in developing seeds in the early stage
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more transcript and protein are accumulated in tubers of 597 g fresh weight, that is, a stage of rapid starch synthesis, than tubers of other stages. Found in both soluble and granule bound portions of tuber extracts
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more transcript and protein are found in tubers of 597 fresh weight than in smaller or larger ones. Only the 66000 Da form of SSSI exists in tuber
