how does hot and cold temperatures affect the enzyme carbonic anhydrase
how does hot and cold temperatures affect the enzyme carbonic anhydrase
Homework Answers
The enzyme carbonic anhydrase is involved in the catalysis of interconversion of carbon dioxide and water into carbonic acid, protons and bicarbonate ions. This enzyme is mostly seen in the erythrocytes of humans and other animals. Zinc ion is present on its active site.
At low temperature, the enzyme activity is minimum, and the enzyme activity peaks around 40 ºC. And again at higher temperature the enzyme activity will reduce. Absolutely there won’t be any enzyme activity beyond 80 ºC . At higher temperature the enzyme carbonic anhydrase gets denatured, so no enzyme activity observed.
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how does hot and cold temperatures affect the enzyme carbonic
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Which statement(s) is(are) true about carbonic anhydrase enzyme? A. Carbonic anhydrase enzyme is involved in the...
Which statement(s) is(are) true about carbonic anhydrase enzyme? A. Carbonic anhydrase enzyme is involved in the production of chemicals that are important for controlling the blood pH of humans, B. Coordination site of the metal in carbonic anhydrase aquires a square planar geometry C. Histidine groups attached to the metal get polarized during the catalytic process. A and B A and C Band C B A QUESTION 7 Determine the d electron configuration of [Fe(NH 3) 61 3* complex (tag)Pleglo...
Describe the enzyme carbonic anhydrase by answering the following question: (a) Which reaction is catalyzed by...
Describe the enzyme carbonic anhydrase by answering the following question: (a) Which reaction is catalyzed by this enzyme? (2 points) (b) Which cofactor is used by this enzyme? (1 point). (c) Which amino acids of the enzyme, and how many of them coordinate the cofactor? (2 points). (d) How does this cofactor help accelerate the reaction? Think about the chemistry (1 point) and the shift of the equilibrium (1 point).
This image represents a close up view of the active site of carbonic anhydrase. The spherical...
This image represents a close up view of the active site of carbonic anhydrase. The spherical Zn^2+ ion is coordinated to three amino acids (part of the anhydrase structure), each one connected through a nitrogen atom. A fourth coordination site is now bonded to a hydroxide ion. This hydroxide used to be a water molecule. Thinking back to how ions can affect the pH of water, (Chapter 15, acid/base properties of salts), how did water become hydroxide in this instance?...
The enzyme carbonic anhydrase catalyzes the hydration of CO2 gas in red blood cells: &
The enzyme carbonic anhydrase catalyzes the hydration of CO2 gas in red blood cells: CO2 (g) + H2O (L) →H2CO3 (aq) Determine the ∆Ssys of this reaction at 37 °C (body temperature), and justify the sign. *Thermodynamic parameters at T=298K and 1 bar Sm (JK-1 mol-1) Cp (JK-1 MOL-1) CO2 (g) 213.7 36.8 H2O (L) 69.9 78.2 H2CO3 (aq) 187.4 19.4
Carbonic anhydrase has two potential substrates: CO2 and HCO3 - . The KM value for CO2...
Carbonic anhydrase has two potential substrates: CO2 and HCO3 - . The KM value for CO2 is 12 mM and the KM for HCO3 - is 26 mM. Which substrate does carbonic anhydrase have a higher affinity for?
Complete the following sentences describing the reactions of CO2 in plasma. red blood cells carbonic anhydrase...
Complete the following sentences describing the reactions of CO2 in plasma. red blood cells carbonic anhydrase low left reversible acidic right cytoplasm basic arrow The concentration of carbon dioxide determines the following reaction: H2O + CO2 + H2CO3 The above reaction is catalyzed by the enzyme carbonic anhydrase found in In the tissues, where CO is high, the reaction will move to the making the blood more making In the lungs where CO2 is low and H2CO3 is high, the...
15. Compare the catalytic activity of of the following enzymes: carbonic anhydrase, aspartate transcarbomylase (ATcase), restriction...
15. Compare the catalytic activity of of the following enzymes: carbonic anhydrase, aspartate transcarbomylase (ATcase), restriction enzymes and myosins. (40 points) What is unique about each active site with regards to types of amino acid residues a) located in active site and interaction with substrate? b) Briefly what is the mechanism of catalysis in each active site? Are cofactors or coenzymes required by the enzymes and if so what is the role of the cofactor/coenzyme in catalysis? c) How is...
Explain how the cold temperatures in the ocean would affect the formation of nitrogen bubbles in...
Explain how the cold temperatures in the ocean would affect the formation of nitrogen bubbles in a divers bloodstream during a hasty descent to the surface? (hint: yse the combined gas law)
The following question focuses on how the parameters regulating enzyme function might change, and how these...
The following question focuses on how the parameters regulating enzyme function might change, and how these might appear graphically on a Michaelis-Menton plot and a Lineweaver-Burke plot. Carbonic anhydrase is an enzyme that will convert CO2 and water into HCO3. CO2 + H20 > H+ + HCO3 There are many different isoforms of this enzyme. see for instance: http://en.wikipedia.org/wiki/Carbonic_anhydrase 1 Assume that one variant has a Km of 1 µM and a different variant has a Km of 10 µM....
The enzyme carbonic anhydrase catalyzes the reaction CO2(g)+H2O(l)−→−HCO3−(aq)+H+(aq).CO2(g)+H2O(l)→ HCO3−(aq)+H+(aq). In water, without the enzyme, the reaction...
The enzyme carbonic anhydrase catalyzes the reaction CO2(g)+H2O(l)−→−HCO3−(aq)+H+(aq).CO2(g)+H2O(l)→ HCO3−(aq)+H+(aq). In water, without the enzyme, the reaction proceeds with a rate constant of 0.039s−10.039 s−1 at 25°C.25 °C. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 1.0×106s−11.0×106 s−1 at 25°C.25 °C. Assuming the collision factor is the same for both situations, calculate the difference in activation energies for the uncatalyzed versus enzyme- catalyzed reaction.
Which statement(s) is(are) true about carbonic anhydrase enzyme? A. Carbonic anhydrase enzyme is involved in the production of chemicals that are important for controlling the blood pH of humans, B. Coordination site of the metal in carbonic anhydrase aquires a square planar geometry C. Histidine groups attached to the metal get polarized during the catalytic process. A and B A and C Band C B A QUESTION 7 Determine the d electron configuration of [Fe(NH 3) 61 3* complex (tag)Pleglo...
This image represents a close up view of the active site of carbonic anhydrase. The spherical Zn^2+ ion is coordinated to three amino acids (part of the anhydrase structure), each one connected through a nitrogen atom. A fourth coordination site is now bonded to a hydroxide ion. This hydroxide used to be a water molecule. Thinking back to how ions can affect the pH of water, (Chapter 15, acid/base properties of salts), how did water become hydroxide in this instance?...
Complete the following sentences describing the reactions of CO2 in plasma. red blood cells carbonic anhydrase low left reversible acidic right cytoplasm basic arrow The concentration of carbon dioxide determines the following reaction: H2O + CO2 + H2CO3 The above reaction is catalyzed by the enzyme carbonic anhydrase found in In the tissues, where CO is high, the reaction will move to the making the blood more making In the lungs where CO2 is low and H2CO3 is high, the...
15. Compare the catalytic activity of of the following enzymes: carbonic anhydrase, aspartate transcarbomylase (ATcase), restriction enzymes and myosins. (40 points) What is unique about each active site with regards to types of amino acid residues a) located in active site and interaction with substrate? b) Briefly what is the mechanism of catalysis in each active site? Are cofactors or coenzymes required by the enzymes and if so what is the role of the cofactor/coenzyme in catalysis? c) How is...
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