19 bp DNA 1D66-PWZ Protein for Molecular Biology

Whole complex.
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Distances:

DNA Double a-helix (19 bp length in Å units)

Dimameter of Double a-Helix (length in Å units)

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1D66 DNA 19 bp GAL4 The Overall Architecture of DNA .
The yeast GAL4 Protein is a transcriptional activator that binds to DNA. The DNA 19bp is shown using Sticks with the bases colored Shapely, and the backbone colored red. The two 2 subunits of the symmetric dimer are shown using the Backbone display. The DNA recognition module is blue; the linker region is purple; and the dimerization element is green. The two 2 metal ions bound to each subunit are shown as yellow balls. (cf. Fig. 3 of Marmorstein, et al.)

Close-up view of protein-DNA interactions in one half-site.
Protein residues H-bond to the DNA bases as follows: Lys17 (carbonyl) to C8; Lys18 (carbonyl) to C7 and C8; and Lys18 (amino) to G6 and/or G7.
The protein also makes these contacts to the DNA sugar-phosphate backbone: Gln9 and Arg15 with phosphate 5; and Lys20, Cys21 (NH), and Lys23 with phosphate 6. (cf. Figs. 5 & 6 of Marmorstein, et al.)
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DNA backbone.
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Coordinates from 1D66.pdb.