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Literature summary extracted from

  • Colombo, S.L.; Andreo, C.S.; Podesta, F.E.
    Carbon metabolism in germinating Ricinus communis cotyledons. Purification, characterization and developmental profile of NADP-dependent malic enzyme (1997), Physiol. Plant., 101, 821-826.
No PubMed abstract available

Activating Compound

EC Number Activating Compound Comment Organism Structure
1.1.1.40 acetyl-CoA activates Ricinus communis
1.1.1.40 CoA activates Ricinus communis
1.1.1.40 palmitoyl-CoA activates Ricinus communis
1.1.1.40 succinate activates Ricinus communis

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.1.1.40 0.0082
-
NADP+
-
Ricinus communis
1.1.1.40 0.68
-
L-malate
-
Ricinus communis
1.1.1.40 8.2
-
NADP+
-
Ricinus communis

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
1.1.1.40 Mg2+ Mn2+ or Mg2+ required Ricinus communis
1.1.1.40 Mn2+ Mn2+ or Mg2+ required Ricinus communis

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
1.1.1.40 72000
-
4 * 72000, SDS-PAGE Ricinus communis
1.1.1.40 285000
-
gel filtration Ricinus communis

Organism

EC Number Organism UniProt Comment Textmining
1.1.1.40 Ricinus communis
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
1.1.1.40 partial Ricinus communis

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.1.1.40 cotyledon
-
Ricinus communis
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.1.1.40 additional information
-
-
Ricinus communis

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.1.1.40 (S)-malate + NADP+ reaction velocity is 29times higher in the direction of decarboxylation than in the direction of the carboxylation Ricinus communis pyruvate + CO2 + NADPH
-
r
1.1.1.40 pyruvate + CO2 + NADPH reaction velocity is 29times higher in the direction of decarboxylation than in the direction of the carboxylation Ricinus communis L-malate + NADP+
-
r

Subunits

EC Number Subunits Comment Organism
1.1.1.40 tetramer 4 * 72000, SDS-PAGE Ricinus communis

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.1.1.40 6.9 7.2
-
Ricinus communis
1.1.1.40 7.1
-
-
Ricinus communis

pH Range

EC Number pH Minimum pH Maximum Comment Organism
1.1.1.40 6.5 7.5 pH 6.5: about 55% of maximal activity, pH 7.5: about 35% of maximal activity Ricinus communis

Cofactor

EC Number Cofactor Comment Organism Structure
1.1.1.40 NADP+ cofactor Ricinus communis
1.1.1.40 NADPH cofactor Ricinus communis