Glycopeptide antibiotic constructs

A construct comprising: (i) an optionally derivatized glycopeptide antibiotic; (ii) a nanoparticle; and (iii) a first linker connecting (i) and (ii) is provided. The construct may further comprise a second linker located between the first linker and (ii). The nanoparticle may be a separation nanoparticle, such as a magnetic separation nanoparticle. The glycopeptide antibiotic may be selected from the group consisting: of vancomycin; teicoplanin; oritavancin; telavancin; chloroeremomycin; and balhimycin. Also provided are related methods of producing and using the construct, such as methods of separation of bacteria from a sample by binding the bacteria to the construct