The Architecture of Human General Transcription Factor Tfiid Core Complex (video) European Molecular Biology Laboratory Share Print E-Mail Loading video... Caption The human TFIID core complex contains two copies each of TAF4 (green), TAF5 (red), TAF6 (blue), TAF9 (light blue) and TAF12 (light green). The density determined by cryo-electron microscopy is shown as a grey mesh. Credit Gabor Papai - IGBMC 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.