Answered: Figure 1. Enzyme and potential…

Science

Biochemistry

Figure 1. Enzyme and potential substrates

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter6: Energy, Enzymes, And Biological Reactions

Section: Chapter Questions

Problem 9TYK: Which of the following statements about inhibition is true? a. Allosteric inhibitors and allosteric...

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Question

Enzymes are catalytic proteins or RNA molecules that accelerate chemical reactions. Substrates
are the molecules that are acted upon by enzymes and are converted into products through the
binding of substrates to an enzyme’s active site. Figure 1 below shows a protein enzyme’s active
site and four potential protein substrates. Table 1 indicates the different chemical properties at
several locations in a hypothetical enzyme’s active site, and Table 2 indicates the different
chemical properties at several locations in the potential substrates. Locations labeled “A” in the
enzyme’s active site and on the substrate will attempt to interact, as will locations that are labeled
“B” and “C.”

Enzyme
Substrates
B
Figure 1. Enzyme and potential substrates
Chemical Property
Polar and neutral
Acidic (negatively charged)
Nonpolar
Table 1. Enzyme active site properties
Site
A
B

Site B
Polar and neutral
Acidic (negatively
charged)
Basic (positively
charged)
Acidic (negatively
charged)
Site C
Substrate
1
Site D
X
Site A
Nonpolar
Polar and
Polar and neutral
Basic (positively
charged)
2
Nonpolar
neutral
Polar and
3
Polar and neutral
X
neutral
Polar and
neutral
4
Nonpolar
Table 2. Substrate location chemical properties

Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.

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