| Literature DB >> 201845 |
Abstract
High resolution X-ray analysis of the hormone-binding protein prealbumin has shown that it has a structural complementarity to double-helical DNA. The proposed binding site is composed of two symmetry-related beta-sheets containing a pair of helically disposed arms, which can interact with the bases in the wide groove of DNA. A palindromic target sequence is indicated by the symmetry of the protein. The two identical thyroid hormone binding sites on prealbumin are located in a channel that runs completely through the molecule. These two structural features suggest prealbumin as a model for the thyroid hormone nuclear receptor, providing a number of detailed predictions of its properties.Mesh:
Substances:
Year: 1977 PMID: 201845 DOI: 10.1038/268115a0
Source DB: PubMed Journal: Nature ISSN: 0028-0836 Impact factor: 49.962