7BFX image
Entry Detail
PDB ID:
7BFX
Keywords:
Title:
deoxyxylose nucleic acid hairpin
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2021-01-05
Release Date:
2021-01-27
Method Details:
Experimental Method:
Conformers Calculated:
100
Conformers Submitted:
10
Selection Criteria:
target function
Macromolecular Entities
Polymer Type:polydeoxyribonucleotide
Description:dXyNA (5'-D(*(XA)P*(XG)P*(XC)P*(XA)P*(XA)P*(XT)P*(XC)P*(XC)P*(XC)P*(XC)P*(XC)P*(XC)P*(XG)P*(XG)P*(XA)P*(XT)P*(XT)P*(XG)P*(XC)P*T)-3')
Chain IDs:A
Chain Length:20
Number of Molecules:1
Biological Source:Escherichia coli
Ligand Molecules
Primary Citation
Stable Hairpin Structures Formed by Xylose-Based Nucleic Acids.
Chembiochem 22 1638 1645 (2021)
PMID: 33427360 DOI: 10.1002/cbic.202000803

Abstact

Xenobiology explores synthetic nucleic acid polymers as alternative carriers of genetic information to expand the central dogma. The xylo- and deoxyxylo-nucleic acids (XyNA and dXyNA), containing 3' epimers of riboses and deoxyriboses, are considered to be potential candidates for an orthogonal system. In this study, thermal and spectroscopic analyses show that XyNA and dXyNA form stable hairpins. The dXyNA hairpin structure determined by NMR spectroscopy contains a flexible loop that locks the stem into a stable ladder-like duplex with marginal right-handed helicity. The reduced flexibility of the dXyNA duplex observed in the stem of the hairpin demonstrates that folding of dXyNA yields more stable structures described so far.

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Primary Citation of related structures