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Literature summary for 1.1.1.39 extracted from

  • Hatch, M.D.; Mau, S.L.; Kagawa, T.
    Properties of leaf NAD malic enzyme from plants with C4 pathway photosynthesis (1974), Arch. Biochem. Biophys., 165, 188-200.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
coenzyme A increases activity Panicum miliaceum
coenzyme A increases activity Atriplex spongiosa
coenzyme A increases activity Amaranthus edulis
SO42- activates Atriplex spongiosa

General Stability

General Stability Organism
freezing of crude enzyme extract treated on Sephadex G-25 destroys activity Atriplex spongiosa

Inhibitors

Inhibitors Comment Organism Structure
(S)-malate above 10 mM Atriplex spongiosa
bicarbonate
-
Amaranthus edulis
bicarbonate
-
Atriplex spongiosa
HCO3-
-
Atriplex spongiosa

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.3
-
NAD+
-
Atriplex spongiosa

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ no activation by Mg2+ Panicum miliaceum
Mg2+ no activation by Mg2+ Atriplex spongiosa
Mg2+ no activation by Mg2+ Amaranthus edulis
Mn2+ absolute requirement for Mn2+, no activation by Mg2+ Panicum miliaceum
Mn2+ absolute requirement for Mn2+, no activation by Mg2+ Atriplex spongiosa
Mn2+ absolute requirement for Mn2+, no activation by Mg2+ Amaranthus edulis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
300000
-
gel filtration Atriplex spongiosa

Organism

Organism UniProt Comment Textmining
Amaranthus edulis
-
-
-
Atriplex spongiosa
-
-
-
Panicum miliaceum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Atriplex spongiosa

Source Tissue

Source Tissue Comment Organism Textmining
leaf bundle sheath Panicum miliaceum
-
leaf bundle sheath Atriplex spongiosa
-
leaf bundle sheath Amaranthus edulis
-

Storage Stability

Storage Stability Organism
crude and partially purified enzyme retains activity for several months when stored as a protein suspension in 75% saturated (NH4)2SO4 solution Atriplex spongiosa

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(S)-malate + NADP+ 15% of the activity with NAD+ Atriplex spongiosa pyruvate + CO2 + NADPH
-
?
malate + NAD+
-
Panicum miliaceum pyruvate + CO2 + NADH + H+
-
?
malate + NAD+
-
Atriplex spongiosa pyruvate + CO2 + NADH + H+
-
?
malate + NAD+
-
Amaranthus edulis pyruvate + CO2 + NADH + H+
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.9
-
with NAD+, without activator Atriplex spongiosa
6.9
-
activity with NADP+ Atriplex spongiosa
7.2
-
with NAD+ plus CoA Atriplex spongiosa

Cofactor

Cofactor Comment Organism Structure
NAD+ cofactor Panicum miliaceum
NAD+ cofactor Atriplex spongiosa
NAD+ cofactor Amaranthus edulis
NADP+ 15% of the activity with NAD+ Atriplex spongiosa