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Literature summary for 2.4.1.34 extracted from

  • Aidemark, M.; Andersson, C.; Rasmusson, A.; Widell, S.
    Regulation of callose synthase activity in situ in alamethicin-permeabilized Arabidopsis and tobacco suspension cells (2009), BMC Plant Biol., 9, 27.
    View publication on PubMedView publication on EuropePMC
Search for more literature for 2.4.1.34

Activating Compound

Activating Compound Comment Organism Structure
alamethicin channel-forming peptide, required for in vitro enzyme measurements Nicotiana tabacum
alamethicin channel-forming peptide, required for in vitro enzyme measurements Arabidopsis thaliana
cytochalasin slightly activating Arabidopsis thaliana

Inhibitors

Inhibitors Comment Organism Structure
ethanol
-
 Arabidopsis thaliana
ethanol
-
 Nicotiana tabacum
oryzalin
-
 Arabidopsis thaliana
oryzalin
-
 Nicotiana tabacum

Localization

Localization Comment Organism GeneOntology No. Textmining
plasma membrane the binding site for UDP-glucose for callose synthase is on the cytoplasmic side of the plasma membrane Nicotiana tabacum 5886
-
plasma membrane the binding site for UDP-glucose for callose synthase is on the cytoplasmic side of the plasma membrane Arabidopsis thaliana 5886
-
protoplast
-
 Nicotiana tabacum
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ activates Nicotiana tabacum
Ca2+ activates Arabidopsis thaliana
Mg2+ activates Nicotiana tabacum
Mg2+ activates Arabidopsis thaliana

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
additional information
-
 in BY-2 cells, callose synthase appears in two different protein complexes with masses of approximately 1500 kDa and at 800 kDa, each co-migrating with tubulin Nicotiana tabacum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP-glucose + [(1,3)-beta-D-glucosyl]n Nicotiana tabacum
-
 UDP + [(1,3)-beta-D-glucosyl]n+1
-
 ?
UDP-glucose + [(1,3)-beta-D-glucosyl]n Arabidopsis thaliana
-
 UDP + [(1,3)-beta-D-glucosyl]n+1
-
 ?
UDP-glucose + [(1,3)-beta-D-glucosyl]n Arabidopsis thaliana Col-0
-
 UDP + [(1,3)-beta-D-glucosyl]n+1
-
 ?

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
 Col-0
-
Arabidopsis thaliana Col-0
-
 Col-0
-
Nicotiana tabacum
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
cell suspension culture
-
 Nicotiana tabacum
-
TBY-2 cell
-
 Nicotiana tabacum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
 10 nmol/min/g FW Nicotiana tabacum
additional information
-
 45 nmol/min/g FW Arabidopsis thaliana

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
UDP-glucose + [(1,3)-beta-D-glucosyl]n
-
 Nicotiana tabacum UDP + [(1,3)-beta-D-glucosyl]n+1
-
 ?
UDP-glucose + [(1,3)-beta-D-glucosyl]n
-
 Arabidopsis thaliana UDP + [(1,3)-beta-D-glucosyl]n+1
-
 ?
UDP-glucose + [(1,3)-beta-D-glucosyl]n
-
 Arabidopsis thaliana Col-0 UDP + [(1,3)-beta-D-glucosyl]n+1
-
 ?

Synonyms

Synonyms Comment Organism
callose synthase
-
 Nicotiana tabacum
callose synthase
-
 Arabidopsis thaliana
GSL
-
 Nicotiana tabacum
GSL
-
 Arabidopsis thaliana

General Information

General Information Comment Organism
physiological function the enzyme is important in the biosynthesis of the cell wall component callose, i.e. 1,3-beta-D-glucan Nicotiana tabacum
physiological function the enzyme is important in the biosynthesis of the cell wall component callose, i.e. 1,3-beta-D-glucan Arabidopsis thaliana