Download MendeleyCrystal structure of DCoH, a bifunctional, protein-binding transcriptional coactivator.
Endrizzi, J.A., Cronk, J.D., Wang, W., Crabtree, G.R., Alber, T.(1995) Science 268: 556-559
- PubMed: 7725101
- DOI: https://doi.org/10.1126/science.7725101
- Primary Citation of Related Structures:
1DCH - PubMed Abstract:
DCoH, the dimerization cofactor of hepatocyte nuclear factor-1, stimulates gene expression by associating with specific DNA binding proteins and also catalyzes the dehydration of the biopterin cofactor of phenylalanine hydroxylase. The x-ray crystal structure determined at 3 angstrom resolution reveals that DCoH forms a tetramer containing two saddle-shaped grooves that comprise likely macromolecule binding sites. Two equivalent enzyme active sites flank each saddle, suggesting that there is a spatial connection between the catalytic and binding activities. Structural similarities between the DCoH fold and nucleic acid-binding proteins argue that the saddle motif has evolved to bind diverse ligands or that DCoH unexpectedly may bind nucleic acids.
Organizational Affiliation:
Department of Molecular and Cell Biology, University of California, Berkeley 94720-3206, USA.
