water 2 hydrophobins cellulose- anchoring proteins textile Contact Outlook Target products are outdoor textiles, technical textiles, surgical textiles and antimicrobial textiles, whose ibers are protected against decomposition, for example in the automotive sector. The technology is easily applied to applications in other busi- ness ields where functionalization of cellulose plays a role. Dr. rer. nat. Michael Richter Phone +49 9421 187-353 michael.richter@igb.fraunhofer.de Prof. Dr. rer. nat. Volker Sieber Phone +49 9421 187-300 volker.sieber@igb.fraunhofer.de Funding We would like to thank the German Federal Ministry for Eco- nomic Affairs and Energy, which is funding the interdisciplinary IGF project no. 18884N of the research association Forschungs- kuratorium Textil e. V. The funding is provided via the German Federation of Industrial Research Associations (AiF) as part of the industrial collective research program (Industrielle Gemein- schaftsforschung, IGF). Project partners Hohenstein Institut für Textilinnovation gGmbH, Bönnigheim | William-Küster Institute of Hygiene, Environment and Medicine, Bönnigheim 1 Textiles rendered water-repellent. 2 Scheme of protein-based textile functionalization. 7 7