AlphaFold is now capable of predicting homodimeric complexes, including those formed by the transcription elongation factor Eaf, the N‑terminal region of which is shown here.Credit: Google DeepMind/EMBL-EBI (CC-BY-4.0) A database containing the predicted structures of nearly every known protein on Earth has grown even larger and become more useful for understanding how the building blocks of life work together. For the first time, the AlphaFold protein-structure database will include predictions of complexes of proteins — with the addition of 1.7 million ‘homodimers’ comprising two interacting strands of the same molecule. The freely available database, maintained by the European Molecular Biology Laboratory’s European Bioinformatics Institute (EMBL-EBI) in Hinxton, UK, currently holds around 200 million predictions of individual protein structures, made using the AlphaFold2 artificial-intelligence tool, developed by London-based firm Google DeepMind.…