Top view of spike protein structure 6vyb (image) University of Warwick Share Print E-Mail Caption Top view of spike protein structure 6vyb. Colors blue, red and yellow denote the 3 sub-parts of the homodimer. Credit University of Warwick Usage Restrictions Use only with credit. 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.