Video1 (VIDEO) Tokyo Medical and Dental University This video is under embargo. Please login to access this video. Caption PQBP5 is an essential structural component of the nucleolus. This 3D image of a single nucleolus shows the interactions among three nucleolar proteins: PQBP5 (green) forms a lattice-like meshwork ball that anchors assembly of fibrillarin (red) and nucleolin (blue). Credit Department of Neuropathology, TMDU Usage Restrictions None License Licensed content 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.