Structural highlights
Function
[GAL4_YEAST] This protein is a positive regulator for the gene expression of the galactose-induced genes such as GAL1, GAL2, GAL7, GAL10, and MEL1 which code for the enzymes used to convert galactose to glucose. It recognizes a 17 base pair sequence in (5'-CGGRNNRCYNYNCNCCG-3') the upstream activating sequence (UAS-G) of these genes. This sequence is correctly shown on the structure as (5'-CGGAGGACTGCCCTCCG-3'). with all of the base pairs within 5 angstroms of the protein highlighted illustrates that the protein interacts with both strands of the UAS.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
A specific DNA complex of the 65-residue, N-terminal fragment of the yeast transcriptional activator, GAL4, has been analysed at 2.7 A resolution by X-ray crystallography. The protein binds as a to a symmetrical 17-base-pair sequence. There is a compact (residues 8-40), an (41-49), and an (50-64). A small, Zn(2+)-containing domain recognizes a conserved CCG triplet at each end of the site through direct contacts with the major groove. The metal binding domain contains that coordinate to the metal as shown as cadmium. A short coiled-coil dimerization element imposes 2-fold symmetry. A segment of extended polypeptide chain links the metal-binding module to the dimerization element and specifies the length of the site. The relatively open structure of the complex would allow another protein to bind coordinately with GAL4.
DNA recognition by GAL4: structure of a protein-DNA complex.,Marmorstein R, Carey M, Ptashne M, Harrison SC Nature. 1992 Apr 2;356(6368):408-14. PMID:1557122[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Marmorstein R, Carey M, Ptashne M, Harrison SC. DNA recognition by GAL4: structure of a protein-DNA complex. Nature. 1992 Apr 2;356(6368):408-14. PMID:1557122 doi:http://dx.doi.org/10.1038/356408a0
