Google DeepMind introduces SynthID Bio for watermarking AI-generated proteins

What changed

Google DeepMind introduced SynthID Bio on September 30, extending its watermarking work to synthetic biology. The methods embed subtle signals into protein sequences and predicted structures that can still be verified after a protein is physically synthesized. DeepMind reports that its lab tests preserved biological function, while framing the work as a proof of concept rather than a standalone biosecurity solution.