Related Experiment Video
Updated: Oct 5, 2026

Complementation of Splicing Activity by a Galectin-3 - U1 snRNP Complex on Beads
Published on: December 9, 2020
Evidence that Gal11 protein is a target of the Gal4 activation domain in the mediator
1Department of Internal Medicine, Ryburn Center for Molecular Cardiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-8573, USA.
Abstract:
The mediator is an approximately 20 protein complex that is essential for the transcription of most genes in yeast. It is contacted by a number of gene-specific activators, but the details of these interactions are not well understood in most cases. Here, evidence is presented that the mediator component Gal11 represents at least one target of the Gal4 activation domain (AD). Deletion of Gal11 is shown to decrease the affinity of the Gal4 AD for the mediator, and direct binding of an N-terminal domain of Gal11 with the Gal4 AD is demonstrated. Quantitative studies, however, indicate that the K(D) of the 1:1 Gal4 AD--Gal11 complex is modest. Combined with in vivo data showing that Delta gal11 cells exhibit reduced, but still significant, Gal4-mediated gene expression, these results suggest that the dimeric activator might also contact another protein in the mediator in addition to Gal11.
Related Concept Videos
Eukaryotic Transcription Inhibitors
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
Activation and Inactivation of G Proteins
Master Transcription Regulators
Reporter Genes
Commonly used reporter...
RNA Polymerase II Accessory Proteins
