ISDA: 6A1O

Deposition Date 2018-06-07

Release Date 2019-01-16

Last Version Date 2023-11-22

Entry Detail

PDB ID:

6A1O

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:

2.49 Å

R-Value Free:

0.29

R-Value Work:

0.27

R-Value Observed:

0.27

Space Group:

P 65

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Macromolecular Entities

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(P*TP*G)-3')
Chain IDs:A
Chain Length:2
Number of Molecules:1
Biological Source:synthetic construct

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(P*CP*A)-3')
Chain IDs:B
Chain Length:2
Number of Molecules:1
Biological Source:synthetic construct

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(P*TP*GP*TP*G)-3')
Chain IDs:C
Chain Length:4
Number of Molecules:1
Biological Source:synthetic construct

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(P*CP*AP*CP*A)-3')
Chain IDs:D
Chain Length:4
Number of Molecules:1
Biological Source:synthetic construct

Primary Citation

Crystal structures of disordered Z-type helices.

Karthik, S, Mandal, P.K, Thirugnanasambandam, A, Gautham, N.Show

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

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