Books > Science & Mathematics > Biology, life sciences > Life sciences: general issues > Genetics (non-medical) > DNA
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Progress in DNA Damage Research (Hardcover, Illustrated Ed)
Loot Price: R3,746
Discovery Miles 37 460
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Progress in DNA Damage Research (Hardcover, Illustrated Ed)
Expected to ship within 12 - 17 working days
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This book presents the latest research on DNA damage, which due to
environmental factors and normal metabolic processes inside the
cell, occurs at a rate of 1,000 to 1,000,000 molecular lesions per
cell per day. While this constitutes only 0.000165% of the human
genome's approximately 6 billion bases (3 billion base pairs),
unrepaired lesions in critical genes (such as tumour suppresser
genes) can impede a cell's ability to carry out its function and
appreciably increase the likelihood of tumour formation. The vast
majority of DNA damage affects the primary structure of the double
helix; that is, the bases themselves are chemically modified. These
modifications can in turn disrupt the molecules' regular helical
structure by introducing non-native chemical bonds or bulky adducts
that do not fit in the standard double helix. Unlike proteins and
RNA, DNA usually lacks tertiary structure and therefore damage or
disturbance does not occur at that level. DNA is, however,
supercoiled and wound around "packaging" proteins called histones
(in eukaryotes), and both superstructures are vulnerable to the
effects of DNA damage.
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