6A1Q image
Deposition Date 2018-06-07
Release Date 2019-01-16
Last Version Date 2023-11-22
Entry Detail
PDB ID:
6A1Q
Keywords:
DNA
Title:
Crystal structures of disordered Z-type helices
Biological Source:
Source Organism:
synthetic construct (Taxon ID: 32630)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.50 Å
R-Value Free:
0.27
R-Value Work:
0.27
R-Value Observed:
0.27
Space Group:
P 32
6A1Q validation report
Macromolecular Entities
Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(P*TP*GP*TP*G)-3')
Chain IDs:A, C, E
Chain Length:4
Number of Molecules:3
Biological Source:synthetic construct
Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(P*CP*AP*CP*A)-3')
Chain IDs:B, D, F
Chain Length:4
Number of Molecules:3
Biological Source:synthetic construct
Primary Citation
Crystal structures of disordered Z-type helices.
Nucleosides Nucleotides Nucleic Acids 38 279 293 (2019)
PMID: 30588873 DOI: 10.1080/15257770.2018.1517883

Abstact

The X-ray crystal structures of a decamer sequence d(CGCGTACGCG)2 and a tetradecamer sequence d(CGCGCGTACGCGCG)2 are presented here. Both sequences are alternating pyrimidine-purine repeat sequences and they form disordered, pseudo-continuous left handed Z-type helices. They demonstrate interesting variants of the 'bundles of columns of helices' mode of packing.

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Primary Citation of related structures
6A1O