TOPLESS (image) Van Andel Research Institute Share Print E-Mail Caption The tetrameric TOPLESS complex with the EAR motif peptides bound at its repressor-peptide binding grooves. The repressor peptides are shown as a ball presentation. Credit Karsten Melcher, Ph.D., Van Andel Research Institute Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.