1d98

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Image:1d98.gif

1d98, resolution 2.500Å

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THE STRUCTURE OF AN OLIGO(DA).OLIGO(DT) TRACT AND ITS BIOLOGICAL IMPLICATIONS

Overview

Poly(dA).poly(dT) has unusual properties in that it cannot associate into nucleosomes and short, phased runs of it cause DNA bending. The crystal structure of a B-type DNA dodecamer containing a homopolymeric run of six A.T base pairs shows that this region possesses special structural features, including a system of bifurcated hydrogen bonds, which explains some of the properties of this simple homopolymer.

About this Structure

1D98 is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.

Reference

The structure of an oligo(dA).oligo(dT) tract and its biological implications., Nelson HC, Finch JT, Luisi BF, Klug A, Nature. 1987 Nov 19-25;330(6145):221-6. PMID:3670410

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