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Which enzyme is the most similar to Pyruvate dehyrogenase a citrate dyhydrogenase b malate dehydrogenase c succinate dehydrogenase d isocitrate dehydrogenase e alpha ketoglutarage dehydrogenase?
Wiki User
∙ 10y ago
alpha-ketoglutarate dehydrogenase is most similar to pyruvate dehydrogenase as both are enzyme complexes made of 3 units
Wiki User
∙ 10y ago
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Why is mitochondrial respiration dependent on ADP?
Isocitrate Dehydrogenase transforms isocitrate into alpha-ketoglutarate and is an important step in the citric acid cycle. This enzyme utilises NAD+ as a co-enzyme, NAD+ also acts as an allosteric inhibitor increasing the enzymes affinity for substrates. High ADP, High turn over of this enzyme meaning more citric acid cyle. Which in turn results in the high energy carriers that are donate electrons to the electron transport chain involved in pumping protons in the mitochondria. Also Pyruvate dehydrogenase (pyruvate --> acety CoA) is an irreversible step which links glycolosis to the citric acid cycle, this too has its activity increased by ADP
Which substances in the citric acid cycle are tricarboxylic acids?
Citrate & isocitrate
What are examples of protein catalyst?
1) Protein disulfide isomerase or PDI:Catalyze the formation, isomerization and breakage of disulfide bonds in proteins 2) Peptidyl transferase: An aminoacyltransferase 3) palmitoyl[protein] hydrolase: palmitoyl[protein] + H2O palmitate + protein 4) Isocitrate lyase: converts isocitrate to succinate 5) Peptide synthases: biotin protein ligase (BPL), protein N-octanoyltransferases
What is an aconitase?
Aconitase is another name for aconitate hydratase, an enzyme which catalyzes the stereospecific isomerization of citrate to isocitrate via cis-aconitate in the tricarboxylic acid cycle.
What is the function of glyoxysome?
The control and catalyse the decomposition of a compound by stages; specifically storage fat. Then channel the products towards the synthesis of numerous carbon compounds or carbohydrates. They are very important during growth because they help to synthesis new cell walls.
What is isocitrate dehydrogenase?
enzyme from the TCA cycle. Provide NADPH
What has the author R Dajani written?
R. Dajani has written: 'Regulation of isocitrate dehydrogenase in a thermophilic bacillus'
Why is mitochondrial respiration dependent on ADP?
Isocitrate Dehydrogenase transforms isocitrate into alpha-ketoglutarate and is an important step in the citric acid cycle. This enzyme utilises NAD+ as a co-enzyme, NAD+ also acts as an allosteric inhibitor increasing the enzymes affinity for substrates. High ADP, High turn over of this enzyme meaning more citric acid cyle. Which in turn results in the high energy carriers that are donate electrons to the electron transport chain involved in pumping protons in the mitochondria. Also Pyruvate dehydrogenase (pyruvate --> acety CoA) is an irreversible step which links glycolosis to the citric acid cycle, this too has its activity increased by ADP
What major events that occur during Krebs cycle?
Most summaries of the Krebs Cycle will usually indicate that the cycle is an aerobic process (one that requires oxygen) that produces ATP by breaking down glucose.Kreb Cycle shows no oxygen or glucose is used in the cycle and that it does not make much ATP (only one molecule for each acetyl CoA that enters the cycle).
How many carbon atoms in an isocitrate?
Citrate is a C6 compound i.e. there are 6 carbon atoms present in Citrate.
What reaction does aconitase catalyse?
The isomerisation of citrate to isocitrate in the TCA cycles
Which substances in the citric acid cycle are tricarboxylic acids?
Citrate & isocitrate
Where is carbon dioxide formed during glucose metabolism?
When cellular respiration takes place the energy stored in the chemical bonds of glucose (C6H12O6) is released that energy is used to produce ATP(adinosinetri phosphate): In respiration glucose is oxidized and oxygen is reduced to form water(H2O). The carbon atoms of the sugar molecule are released as carbon dioxide (CO2).
What is aconitic acid?
Aconitic acid is an organic acid used in the isomerization of citrate to isocitrate in the citric acid cycle.
What has the author Geoffrey Frank Cox written?
Geoffrey Frank Cox has written: 'The metabolism of isocitrate in higher plants'
Describe the process in krebs cycle?
The Krebs cycle, also known as the citric acid cycle, is a series of chemical reactions that occur within the mitochondria of cells. The cycle involves the breakdown of carbohydrates, fats, and proteins to produce ATP, the primary energy source for cells. The process can be divided into the following steps: Acetyl-CoA Formation: The cycle starts with the formation of acetyl-CoA from pyruvate, which is generated during glycolysis or from fatty acids. This reaction is catalyzed by the enzyme pyruvate dehydrogenase, and results in the release of carbon dioxide (CO2) and the formation of NADH. Citrate Formation: Acetyl-CoA then combines with oxaloacetate to form citrate, which is catalyzed by the enzyme citrate synthase. This reaction also releases CoA. Isocitrate Formation: Citrate is then converted into isocitrate by the enzyme aconitase. This reaction involves the removal of one water molecule and the addition of another. α-Ketoglutarate Formation: Isocitrate is then oxidized by isocitrate dehydrogenase, releasing CO2 and producing NADH. This reaction also forms α-ketoglutarate. Succinyl-CoA Formation: α-Ketoglutarate is then converted into succinyl-CoA by the enzyme α-ketoglutarate dehydrogenase. This reaction also releases CO2 and produces NADH. Succinate Formation: Succinyl-CoA is then converted into succinate by the enzyme succinyl-CoA synthetase. This reaction produces ATP. Fumarate Formation: Succinate is then oxidized by succinate dehydrogenase, releasing FADH2 and producing fumarate. Malate Formation: Fumarate is then converted into malate by the enzyme fumarase. Oxaloacetate Formation: Malate is then oxidized by malate dehydrogenase, releasing NADH and producing oxaloacetate. The oxaloacetate can then be used to begin the cycle again. Overall, the Krebs cycle produces 2 ATP, 6 NADH, 2 FADH2, and 4 CO2 molecules for every molecule of glucose that enters the cycle. These products are then used in the electron transport chain to produce more ATP, which can be used for cellular energy.
What are examples of protein catalyst?
1) Protein disulfide isomerase or PDI:Catalyze the formation, isomerization and breakage of disulfide bonds in proteins 2) Peptidyl transferase: An aminoacyltransferase 3) palmitoyl[protein] hydrolase: palmitoyl[protein] + H2O palmitate + protein 4) Isocitrate lyase: converts isocitrate to succinate 5) Peptide synthases: biotin protein ligase (BPL), protein N-octanoyltransferases
