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Literature summary for 2.4.1.13 extracted from

  • Porchia, A.C.; Curatti, L.; Salerno, G.L.
    Sucrose metabolism in cyanobacteria: sucrose synthase from Anabaena sp. strain PCC 7119 is remarkably different from the plant enzymes with respect to substrate affinity and amino-terminal sequence (1999), Planta, 210, 34-40.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
Mg2+ 2-4fold activation of sucrose synthesis, not cleavage Anabaena sp.
Mn2+ 2-4fold activation of sucrose synthesis, inhibition of cleavage Anabaena sp.

Inhibitors

Inhibitors Comment Organism Structure
arbutin no enzyme activity at 5 mM Anabaena sp.
fructose above 20 mM, cosubstrate ADP-Glc, not with UDP-GLC Anabaena sp.
Mn2+ sucrose cleavage Anabaena sp.

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.15
-
ADP
-
Anabaena sp.
1.25
-
UDP
-
Anabaena sp.
3.7
-
CDP
-
Anabaena sp.
4.5
-
GDP
-
Anabaena sp.
288 303 sucrose
-
Anabaena sp.

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
360000
-
gel filtration, form SS-II Anabaena sp.

Organism

Organism UniProt Comment Textmining
Anabaena sp.
-
strain PCC 7119, two isoforms
-

Purification (Commentary)

Purification (Comment) Organism
-
Anabaena sp.

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ADP-glucose + D-fructose
-
Anabaena sp. ADP + sucrose
-
r
CDP-glucose + D-fructose
-
Anabaena sp. CDP + sucrose
-
r
GDP-glucose + D-fructose
-
Anabaena sp. GDP + sucrose
-
r
UDP + sucrose
-
Anabaena sp. UDP-glucose + D-fructose
-
?
UDPglucose + D-fructose
-
Anabaena sp. UDP + sucrose
-
r

Subunits

Subunits Comment Organism
tetramer 4 x 92000, SDS-PAGE, form SS-II, N-terminal sequence Anabaena sp.

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
1 1.5 Mn2+ sucrose cleavage Anabaena sp.