Evidence that the leucine zipper is a coiled coil - PubMed (original) (raw)
. 1989 Jan 27;243(4890):538-42.
doi: 10.1126/science.2911757.
Affiliations
- PMID: 2911757
- DOI: 10.1126/science.2911757
Evidence that the leucine zipper is a coiled coil
E K O'Shea et al. Science. 1989.
Abstract
Recently, a hypothetical structure called a leucine zipper was proposed that defines a new class of DNA binding proteins. The common feature of these proteins is a region spanning approximately 30 amino acids that contains a periodic repeat of leucines every seven residues. A peptide corresponding to the leucine zipper region of the yeast transcriptional activator GCN4 was synthesized and characterized. This peptide associates in the micromolar concentration range to form a very stable dimer of alpha helices with a parallel orientation. Although some features of the leucine zipper model are supported by our experimental data, the peptide has the characteristics of a coiled coil.
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