 Large adaptor proteins such as antibodies can be used to display more binding sites, but it isn't considered a feasible solution.This method has been shown to produce 4RepCT proteins that have a higher cell adhesion than natural spidroin proteins and have varied antimicrobial properties.The second method, chemical modification of the silk proteins should result in the covalent attachment of several copies of a wide range of organic and organometallic ligands using robust or sensitive linkers depending on the application.