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Dictionary » M » Malic enzyme

Malic enzyme

Definition

noun

The enzyme that catalyzes the oxidative decarboxylation of (S)-malate to pyruvate, with the concomitant release of carbon dioxide and conversion of NADP+ to NADPH.


Supplement

This enzyme catalyzes the chemical reaction as follows:

(S)-malate + NADP+ → pyruvate + CO2 + NADPH


Also called:

  • (S)-malate:NAD+ oxidoreductase (decarboxylating) (chemical name)
  • pyruvic-malic carboxylase
  • NAD+-specific malic enzyme
  • NAD+-malic enzyme

User Contributions / Comments:

  • An enzyme which catalyzes the oxidative decarboxylation of malate to pyruvate and carbon dioxide concomitantly reducing NADP+ to NADPH. The NADPH generated by malic enzyme is used for the reductive biosynthesis of molecules such as fatty acids.


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Need help with metabolism

... the proton gradient is used in the process of making ATP. the enzyme functions just like a mill that uses protons instead of water. 2. ... the krebs cycle directly, if they are intermediates of the krebs cycle(malic acid, citric acid etc). however, this is done by the cell only to increase/decrease ...

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by MrMistery
Sat Apr 21, 2007 7:51 pm
 
Forum: Cell Biology
Topic: Need help with metabolism
Replies: 1
Views: 1505

TO ANYBODY THAT HAS ANYQUESTIONS ON PHOTOSYNTHESIS

... the light process are present. Recent evidence suggests that a major enzyme of the Dark Reaction is indirectly stimulated by light, thus the term ... when carbon dioxide is combined with PEP. The OAA is converted to Malic Acid and then transported from the mesophyll cell into the bundle-sheath ...

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by CoolJay221
Thu Feb 09, 2006 7:14 pm
 
Forum: Botany Discussion
Topic: TO ANYBODY THAT HAS ANYQUESTIONS ON PHOTOSYNTHESIS
Replies: 5
Views: 9420

Question: Does a plant constantly go through photosynthesis?

... the light process are present. Recent evidence suggests that a major enzyme of the Dark Reaction is indirectly stimulated by light, thus the term ... when carbon dioxide is combined with PEP. The OAA is converted to Malic Acid and then transported from the mesophyll cell into the bundle-sheath ...

See entire post
by CoolJay221
Thu Feb 09, 2006 6:51 pm
 
Forum: Botany Discussion
Topic: Question: Does a plant constantly go through photosynthesis?
Replies: 3
Views: 6714

effect of lead on photosynthesis and respiration

... obstructed electron transport, inhibited activities of Calvin cycle enzymes, as well as deficiency of CO2 as a result of stomatal closure. Ceratophyllum ... NADH-hydroxypyruvate reductase and glycolate oxidase as well as of NAD-malic enzyme were however, not affected by Pb treatment (Romanowska ...

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by aileen
Sat Jan 28, 2006 6:05 am
 
Forum: Botany Discussion
Topic: lead and seeding
Replies: 3
Views: 5910


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