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Literature summary for 2.7.1.11 extracted from

  • Surendranathan, K.K.; Iyer, M.G.; Nair, P.M.
    Characterization of a monomeric phosphofructokinase from banana-role of magnesium on its regulation (1990), Plant Sci., 72, 27-35.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
citrate 10 mM, 60% inhibition Musa acuminata
Dithionitrobenzoic acid 0.06 mM, 80% inhibition of PFK III, reversed by 2-mercaptoethanol, dithiothreitol or reduced glutathione Musa acuminata
additional information not inhibited by AMP; not inhibited by cAMP; not inhibited by phosphate Musa acuminata
p-Chloromercurisulfonic acid 0.025 mM, 80% inhibition of PFK III, reversed by 2-mercaptoethanol, dithiothreitol or reduced glutathione Musa acuminata

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information kinetic study Musa acuminata

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required for activity Musa acuminata
Mg2+ substrate activator and enzyme protein modulator Musa acuminata
Mg2+ MgATP is the active substrate Musa acuminata
Mn2+ activation Musa acuminata
Mn2+ 60% of activity with Mg2+, above 3 mM Musa acuminata

Organism

Organism UniProt Comment Textmining
Musa acuminata
-
-
-

Purification (Commentary)

Purification (Comment) Organism
monomeric form PFK-III, ammonium sulfate, heat treatment, Sepharose 6B, DEAE-sephacel Musa acuminata

Reaction

Reaction Comment Organism Reaction ID
ATP + beta-D-fructofuranose 6-phosphate = ADP + beta-D-fructofuranose 1,6-bisphosphate sequential random mechanism Musa acuminata

Source Tissue

Source Tissue Comment Organism Textmining
fruit
-
Musa acuminata
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.6
-
PFK III Musa acuminata

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + D-fructose 6-phosphate no activity with glucose 6-phosphate Musa acuminata ADP + D-fructose 1,6-bisphosphate
-
?
ATP + D-fructose 6-phosphate transfers gamma-phosphate of ATP to C-1-hydroxyl of D-(-)fructose 6-phosphate, highly specific for sugar substrate Musa acuminata ADP + D-fructose 1,6-bisphosphate
-
?
CTP + D-fructose 6-phosphate as effective as ATP Musa acuminata CDP + D-fructose 1,6-bisphosphate
-
?
GTP + D-fructose 6-phosphate almost as effective as ATP Musa acuminata GDP + D-fructose 1,6-bisphosphate
-
?
UTP + D-fructose 6-phosphate as effective as ATP Musa acuminata UDP + D-fructose 1,6-bisphosphate
-
?

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
complete inactivation of PFK III after approx. 30 sec, ATP stabilizes, 30% loss of activity after 6 min in the presence of 1 mM ATP Musa acuminata