Question

Which of the following enzymes is active above 90°C ?​

Answer 1

Answer:

Enzymes synthesized by hyperthermophiles (bacteria and archaea with optimal growth temperatures of >80°C), also called hyperthermophilic enzymes, are typically thermostable (i.e., resistant to irreversible inactivation at high temperatures) and are optimally active at high temperatures. These enzymes share the same catalytic mechanisms with their mesophilic counterparts. When cloned and expressed in mesophilic hosts, hyperthermophilic enzymes usually retain their thermal properties, indicating that these properties are genetically encoded. Sequence alignments, amino acid content comparisons, crystal structure comparisons, and mutagenesis experiments indicate that hyperthermophilic enzymes are, indeed, very similar to their mesophilic homologues.

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Answer 2

Answer:

Enzymes are known to be helpers of any biological reactions. without enzymes, it is almost impossible for any biochemical or biological reaction to take place. There are specific sets of enzymes that have specific substrates.

Explanation:

Enzymes that remain active above 90°C are said to be Hyperthermophiles.

• Hyperthermophiles are organisms that can withstand a certain temperature that can be intolerable to other organisms.

• example- Thermus aquaticus, a bacteria found in marshy and high-temperature areas, volcanic irruptions and high-humidity areas.

• other organisms that can be hyperthermophiles are- thermophilic bacteria, strain 121, Pyrobolos fumarii etc.
• Enzymes that can withstand more than or up to 80°C have an extracellular layer that protects them from damage such as cellulases, xylose, peptidoglycans etc.

To know more about Enzymes click on the link below

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