A Site-Directed Mutagenesis Converting Histidine-57 of Chymotrypsin to a Lysine

question 20

Essay

A site-directed mutagenesis converting histidine-57 of chymotrypsin to a lysine results in an inactive enzyme even though lysine has an amino group in its side chain. Describe why the scientist may have thought this result surprising and why it wasn't.

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Definitions:

Genetic Progress

The improvement of traits in a population of organisms over generations through selection and breeding.

Plant Species

A group of plants that share common characteristics and genetic makeup, capable of interbreeding and producing fertile offspring.

Biomes

Large ecological zones on Earth's surface, characterized by distinct types of vegetation, wildlife, and climate conditions.

Environmental Changes

Alterations to the natural environment caused by natural phenomena or human activities, affecting ecosystems, climate, and natural resources.