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Chapter 9: Problem 5

Draw the structures of guanine, guanosine, and deoxyguanosine triphosphate.

Short Answer

Expert verified
The key to drawing these structures is to remember the base structure of guanine, and how it is modified in guanosine (addition of a ribose sugar) and deoxyguanosine triphosphate (addition of a deoxyribose and three phosphate groups).

Step by step solution

01

Draw the structure of Guanine

Guanine is one of the five main nucleobases used in storing and transporting genetic information within a cell in the nucleic acids DNA and RNA. The structure of guanine includes a five-membered nitrogen-containing ring fused to a six-membered ring with an amine group bonded to the carbon of the five-membered ring and a carbonyl group bonded to the carbon of the six-membered ring.
02

Draw the structure of Guanosine

Guanosine is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a 尾-N9-glycosidic bond. Guanosine can be phosphorolyzed to guanine and ribose. It differs from guanine since it has a ribose sugar attached to the guanine base.
03

Draw the structure of Deoxyguanosine Triphosphate

The deoxyguanosine triphosphate (dGTP) is a nucleoside triphosphate, a molecule which provides energy for many different cellular processes. It consists of the base guanine, the sugar deoxyribose (which distinguishes it from guanosine triphosphate, which contains ribose), and three phosphate groups. The three phosphate groups distinguish it from deoxyguanosine monophosphate (dGMP) and deoxyguanosine diphosphate (dGDP).

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Most popular questions from this chapter

The base composition of an RNA virus was analyzed and found to be \(14.1 \% \mathrm{~A}, 14.0 \% \mathrm{U}, 36.2 \% \mathrm{G}\), and \(35.7 \% \mathrm{C}\). Would you conclude that the viral genetic material is single- stranded RNA or double-stranded RNA?

Look up the meaning of the word transformation in a dictionary and explain whether it is an appropriate word to describe the transfer of genetic material from one organism to another.

What is the meaning of the term genetic material?

Discuss the differences in the structural features of B DNA and Z DNA.

Could single-stranded DNA form a stem-loop structure? Why or why not?
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