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Literature summary extracted from

  • Preusser, E.; Khalil, F.A.; Goering, H.
    Regulation of activity of the granule-bound starch synthetase by monovalent cations (1981), Biochem. Physiol. Pflanz., 176, 744-752.
No PubMed abstract available

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.4.1.21 Cs+ above 20 mM Solanum tuberosum
2.4.1.21 Cs+ above 20 mM Zea mays
2.4.1.21 Li+ above 20 mM Solanum tuberosum
2.4.1.21 Li+ above 20 mM Zea mays
2.4.1.21 Na+ above 20 mM Solanum tuberosum
2.4.1.21 Na+ above 20 mM Zea mays
2.4.1.21 NH4+ above 20 mM Solanum tuberosum
2.4.1.21 NH4+ above 20 mM Zea mays

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
2.4.1.21 starch grain
-
 Zea mays 43036
-
2.4.1.21 starch grain
-
 Solanum tuberosum 43036
-

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
2.4.1.21 Cs+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Zea mays
2.4.1.21 Cs+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Solanum tuberosum
2.4.1.21 K+ 50-100 mM, marked activation Zea mays
2.4.1.21 K+ 50-100 mM, marked activation Solanum tuberosum
2.4.1.21 Li+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Zea mays
2.4.1.21 Li+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Solanum tuberosum
2.4.1.21 Na+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Zea mays
2.4.1.21 Na+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Solanum tuberosum
2.4.1.21 NH4+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Zea mays
2.4.1.21 NH4+ below 20 mM, slight activation, concentrations higher than 20 mM abolish activation by K+ and Rb+ Solanum tuberosum
2.4.1.21 Rb+ 50-100 mM, marked activation Zea mays
2.4.1.21 Rb+ 50-100 mM, marked activation Solanum tuberosum

Organism

EC Number Organism UniProt Comment Textmining
2.4.1.21 Solanum tuberosum
-
-
-
2.4.1.21 Vicia faba
-
-
-
2.4.1.21 Zea mays
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.4.1.21
-
 Zea mays
2.4.1.21
-
 Solanum tuberosum

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.4.1.21 leaf
-
 Solanum tuberosum
-
2.4.1.21 seed
-
 Zea mays
-
2.4.1.21 tuber
-
 Solanum tuberosum
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.4.1.21 ADP-glucose + alpha-1,4-polyglucan
-
 Vicia faba ADP + alpha-1,4-polyglucan
-
 ?
2.4.1.21 ADP-glucose + alpha-1,4-polyglucan
-
 Zea mays ADP + alpha-1,4-polyglucan
-
 ?
2.4.1.21 ADP-glucose + alpha-1,4-polyglucan
-
 Solanum tuberosum ADP + alpha-1,4-polyglucan
-
 ?