Why Does the Isoleucyl-TRNA Synthetase Use Two Types of Proofreading

question 15

Multiple Choice

Why does the isoleucyl-tRNA synthetase use two types of proofreading mechanisms to ensure its accurate aminoacylation?

• A)It is not a very precise enzyme.
• B)It is a very big enzyme.
• C)Isoleucine is very hard to distinguish from valine,since they differ only by a single methylene group.
• D)Isoleucine is very difficult to distinguish from glycine.
• E)Isoleucine can spontaneously turn into phenylalanine.

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Definitions:

Ectodermal Tissue

One of the three primary germ layers in the embryo of a multicellular organism, which gives rise to the skin and nervous system.

Body Wall

The outermost layer of an organism's body, protecting internal organs and systems from external threats or injuries.

Gut Formation

The developmental process during which the digestive system is formed in an embryo, a critical aspect of animal development and physiology.

Vertebrates

Animals with a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fish.