FIGURE 19.16 Direct repair of dam- aged bases in DNA. (a) The repair of thymine dimers by photolyase. (b) The repair of methylguanine by the transfer of the methyl group to Thymine dimer CH3 SH 06-Methylguanine CH2 ONLINE ANIMATION Н. CH3 Нас. N- н- Н Н N. `NH2 Alkyltransferase alkyltransferase. CONCEPT CHECK: Which of these DNA backbone Alkyltransferase catalyzes the removal of the methyl group onto itself. repair systems is particularly valuable to plants? DNA DNA photolyase cleaves the 2 backbone bonds between the thymine dimer. CH3 Guanine На 'N' CHз Нас. -- н CH2 н Н `NH2 The normal structure of the 2 thymines is restored. The normal structure of guanine is restored. (a) Direct repair of a thymine dimer (b) Direct repair of a methylated base O=
FIGURE 19.16 Direct repair of dam- aged bases in DNA. (a) The repair of thymine dimers by photolyase. (b) The repair of methylguanine by the transfer of the methyl group to Thymine dimer CH3 SH 06-Methylguanine CH2 ONLINE ANIMATION Н. CH3 Нас. N- н- Н Н N. `NH2 Alkyltransferase alkyltransferase. CONCEPT CHECK: Which of these DNA backbone Alkyltransferase catalyzes the removal of the methyl group onto itself. repair systems is particularly valuable to plants? DNA DNA photolyase cleaves the 2 backbone bonds between the thymine dimer. CH3 Guanine На 'N' CHз Нас. -- н CH2 н Н `NH2 The normal structure of the 2 thymines is restored. The normal structure of guanine is restored. (a) Direct repair of a thymine dimer (b) Direct repair of a methylated base O=
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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