is there anything peculiar about its structure?
The Z-DNA helix is left-handed and has a structure that repeats every other base pair
Z-DNA
The Z-DNA helix is left-handed and has a structure that repeats every other base pair
the structure found in the cell that contains strands of dna is called a(n) nuclei what is its full form? Deoxyribonucleic acid what is base pairing? In a DNA double helix, each type of nucleobase on one strand bonds with just one type of nucleobase on the other strand, his is called complementary base pairing. are there any alternative structures? Yes, DNA exists in many possible conformations that include A-DNA, B-DNA, and Z-DNA forms how is it replicated? The two strands are separated and then each strand's complementary DNA sequence is recreated by an enzyme called DNA polymerase. what is the biological function of the first alternative structure mentioned above? A-form DNA is believed to be one of the adaptations of hyperthermophilic archaeal viruses to harsh environmental conditions in which these viruses thrive. what differentiates the third structure form the other two? It is a left-handed double helical structure in which the helix winds to the left in a zigzag pattern, instead of to the right, like the more common B-DNA form. what is its biological significance? A biological role for Z-DNA in the regulation of type I interferon responses who discovered it? Left-handed DNA was first discovered by Robert Wells and colleagues
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Z-DNA [SEP] Structure
Z-DNA is quite different from the right-handed forms. In fact, Z-DNA is often compared against B-DNA in order to illustrate the major differences. The Z-DNA helix is left-handed and has a structure that repeats every other base pair. The major and minor grooves, unlike A- and B-DNA, show little difference in width. Formation of this structure is generally unfavourable, although certain conditions can promote it; such as alternating purine–pyrimidine sequence (especially poly(dGC)), negative DNA supercoiling or high salt and some cations (all at physiological temperature, 37 °C, and pH 7.3–7.4). Z-DNA can form a junction with B-DNA (called a "B-to-Z junction box") in a structure which involves the extrusion of a base pair.