Animation showing how steroid hormones can effect genetic expression. The hormone (green) binds to a receptor (purple), in this case a G protein-coupled receptor, in the cell membrane. The hormone-receptor complex binds to the G protein (red and yellow) and induces the release of GDP (guanosine diphosphate) from the protein. This allows GTP (guanosine triphosphate) to bind to the G protein instead, causing the alpha subunit (red) of the G protein to disassociate from the beta/gamma subunit (yellow). The alpha subunit-GTP complex can then activate a number of pathways in the cell that lead to the activation or suppression of transcription of DNA (deoxyribonucleic acid, grey helix) in the nucleus (bottom). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Biocosmos / Francis Leroy & Maxime Deroyer |
Modell-Rechte: | nicht erforderlich |
Länge: | 21 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |