The genetic fusion of far-red fluorescent proteins and silk is an innovative approach for creating biomaterials suitable for scalable plasmonic photocatalysis. This technique holds promise for various biomedical and environmental applications, including disinfection and water and air purification. Traditional plasmonic photocatalysis faces challenges due to biosafety concerns and negative environmental impacts of foreign nanomaterials. However, Kwang-Ho Choi, Young L. Kim, and their team have demonstrated in article number 1700863 that reactive oxygen species generated from far-red fluorescent proteins (mKate2) embedded in silk can be effectively controlled using green light. These proteins are capable of degrading organic contaminants and inactivating harmful pathogens, offering a comparable alternative to visible-light-driven plasmonic photocatalysis. – Journal cover design by scapiens