Chapter 23, Problem 3P

Interpretation Introduction

Interpretation:

The following characteristics should be matched with the provided bases.

1. A signal that identifies a parental DNA strand in $\text{mutH}$ $,\text{L},\text{S}$mismatch correction system.
2. Most likely to be involved n Cyclobutane dimer formation after ultraviolet. Irradiation of DNA.
3. A methylated base found immediately to the $5^{\text{'}}$base of dGMP residues in eukaryotic DNA.
4. Created by treating DNA with alkylating agents that transfer methyl groups and repaired by an "enzyme" that functions only once in its lifetime.
5. Created by AdoMet-dependent methylation of a nucleotide residue in DNA.
6. A substrate for deamination at the DNA level, which would lead to a $\text{GC}\to \text{AT}$transition.

Concept Introduction:

The name of the given compounds are as follows:

1. 6-Methyl amino purine

2. - Thymine

3. - 5-methyl cytosine

4. 

5. O6−methyl−2−deoxyguanosine

m:math>

2,8−Dihydroxyadenine

Answer:

The following characteristics that applies to the compounds are as follows:

1. A signal that identifies a parental DNA strand in $\text{mutH}$$,\text{L},\text{S}$mismatch correction system. -6-Methyl amino purine.
2. Most likely to be involved n Cyclobutane dimer formation after ultraviolet. Irradiation of DNA − Thymine.
3. A methylated base found immediately to the $5^{\text{'}}$base of dGMP residues in eukaryotic DNA − 5-methyl cytosine.
4. Created by treating DNA with alkylating agents that transfer methyl groups and repaired by an "enzyme" that functions only once in its lifetime. - O-methyl-2-deoxyguanosine.
5. Created by AdoMet-dependent methylation of a nucleotide residue in DNA. - 6-Methyl amino purine and 5-methyl cytosine.
6. A substrate for deamination at the DNA level, which would lead to a $\text{GC}\to \text{AT}$transition - 5-methyl cytosine.