1hkt
From Proteopedia
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SOLUTION STRUCTURE OF THE DNA-BINDING DOMAIN OF DROSOPHILA HEAT SHOCK TRANSCRIPTION FACTOR
Overview
The solution structure of the DNA-binding domain of the Drosophila heat, shock transcription factor, as determined by multidimensional multinuclear, NMR, resembles that of the helix-turn-helix class of DNA-binding proteins., The domain comprises a four-stranded antiparallel beta-sheet, packed, against a three-helix bundle. The second helix is significantly distorted, and is separated from the third helix by an extended turn which is subject, to conformational averaging on an intermediate time scale. Helix 3 forms a, classical amphipathic helix with polar and charged residues exposed to the, solvent. Upon titration with DNA, resonance shifts in the backbone and Asn, and Gln side-chain amides indicate that helix 3 acts as the recognition, helix of the heat shock transcription factor.
About this Structure
1HKT is a Single protein structure of sequence from Drosophila melanogaster. Full crystallographic information is available from OCA.
Reference
Solution structure of the DNA-binding domain of Drosophila heat shock transcription factor., Vuister GW, Kim SJ, Orosz A, Marquardt J, Wu C, Bax A, Nat Struct Biol. 1994 Sep;1(9):605-14. PMID:7634100
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