Rab27a-null Cells Block HIV-1 Assembly (2 of 2) (video) Rockefeller University Press Share Print E-Mail Loading video... Caption In T cells lacking Rab27a, shown here, endosomes (red) carrying an enzyme (green) necessary for PIP2 production don't move toward the plasma membrane, preventing HIV-1 assembly. Credit Pereyra Gerber et al., 2015 Usage Restrictions Reporters may freely use these materials in news coverage, with the appropriate credit information. 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.