ISDA: 1D96

Deposition Date 1992-10-17

Release Date 1993-07-15

Last Version Date 2024-02-07

Entry Detail

PDB ID:

1D96

Keywords:

DNA-RNA HYBRID

Title:

MOLECULAR STRUCTURE OF R(GCG)D(TATACGC): A DNA-RNA HYBRID HELIX JOINED TO DOUBLE HELICAL DNA

Biological Source:

Source Organism:

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Observed:

0.16

Space Group:

P 21 21 21

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Macromolecular Entities

Polymer Type:polydeoxyribonucleotide/polyribonucleotide hybrid
Molecule:DNA/RNA (5'-R(*GP*CP*GP*)-D(*TP*AP*TP*AP*CP*GP*C)-3')
Chain IDs:A, B
Chain Length:10
Number of Molecules:2
Biological Source:

Ligand Molecules

Primary Citation

Molecular structure of r(GCG)d(TATACGC): a DNA--RNA hybrid helix joined to double helical DNA.

Wang, A.H, Fujii, S, van Boom, J.H, van der Marel, G.A, van Boeckel, S.A, Rich, A.Show

Nature 299 601 604 (1982)

PMID: 6181416 DOI: 10.1038/299601a0

Abstact

The molecule r(GCG)d(TATACGC) is self-complementary and forms two DNA--RNA hybrid segments surrounding a central region of double helical DNA; its molecular structure has been solved by X-ray analysis. All three parts of the molecule adopt a conformation which is close to that seen in the 11-fold RNA double helix. The conformation of the ribonucleotides is partly determined by water molecules bridging between the ribose O2' hydroxyl group and cytosine O2. The hybrid-DNA duplex junction contains no structural discontinuities. However, the central DNA TATA sequence has some structural irregularities.

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Primary Citation of related structures

Abstact

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