Watson-Crick bonds guanine-cytosine and adenine-thymine helically shape DNA. If I understand correctly, a sequence in only two of the nucleotides, for instance TGGTGTGGGTG ... would determine the dual side (ACCACACCCAC...), because the only possible bonds are TA, and GC.

I am interested in knowing if there exist double bonds in useful biomolecules. Precisely, I'd be interested in knowing if there exist a useful double bond present in chains of (something like) nucleotides.

Thank you in advance.

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put on hold as unclear what you're asking by David, Bryan Krause Apr 16 at 16:18

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    $\begingroup$ A double bond is a type of covalent chemical bond: en.wikipedia.org/wiki/Double_bond $\endgroup$ – J-- Oct 17 '18 at 15:02
  • $\begingroup$ If you are asking if helical structures exist outside of DNA, collagen (a protein) exists as a triple helix see here $\endgroup$ – user1136 Apr 15 at 17:32
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    $\begingroup$ I have voted to close this as unclear because the poster never responded to requests for clarification. $\endgroup$ – David Apr 16 at 12:57

Hydrogen bonding gives rise to the tertiary structure of a biopolymer. You can learn more about the many shapes and structures of nucleic acids here: https://en.wikipedia.org/wiki/Nucleic_acid_tertiary_structure

Proteins are the most structurally diverse biopolymers, and they assume very complex and dynamic shapes: https://en.wikipedia.org/wiki/Protein_structure


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