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Threose nucleic acid
Additional recommended knowledge
DNA and RNA have a deoxyribose and ribose sugar backbone, respectively, whereas TNA's backbone is composed of repeating threose units linked by phosphodiester bonds. The threose molecule is easier to assemble than ribose making it a possible precursor to RNA.
DNA-TNA hybrid chains have been made in the laboratory using DNA polymerase.
TNA can specifically base pair with RNA and DNA, this capability and chemical simplicity suggests that TNA could have preceded RNA as genetic material.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Threose_nucleic_acid". A list of authors is available in Wikipedia.|