In 1979, Alexander Rich, PhD, and his colleagues solved the structure of a self-complementary DNA hexamer and discovered that the molecule formed a left-handed double helix (Z-DNA). (Credit: Journal ...
Collagen, the most abundant protein in mammals, owes its remarkable strength and resilience to a unique triple helical structure. This conformation is formed by three intertwined polypeptide chains ...
Doubly stapled α-helix consisting only of achiral amino acids. Its one-handed form can be isolated because the interconversion between the right- and left-handed forms is almost completely suppressed.
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