Xenonucleic acids (XNAs) are synthetic genetic polymers that can store and transmit genetic information similar to DNA or RNA. They are designed to be biologically orthogonal, meaning they can coexist with natural nucleic acids without interfering with their biological functions.
XNAs solve the problem of genetic material degrading too quickly in certain biological environments. They offer potential for creating more robust and stable genetic constructs that can withstand harsh conditions, making them useful in applications requiring long-term stability or resistance to natural enzymes.
The backbone of XNAs is replaced by a non-natural component, such as phosphorodithioate (PX), threose-nucleic acid (TNA), or peptide nucleic acid (PNA). This synthetic backbone resists degradation by natural enzymes like nucleases, allowing XNAs to remain stable in environments where DNA or RNA would be quickly degraded.
The manufacturing process involves chemical synthesis of XNA polymers using standard organic chemistry techniques. This typically includes polymerization reactions where the non-natural backbone is linked together with nucleobases (adenine, guanine, cytosine, thymine, or uracil).
Synthesis begins by selecting a suitable non-natural backbone and then attaching nucleobases to create XNA strands. These strands can be further modified for specific applications through chemical derivatization.
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