This is a simplified version of the biotinylated EG thiol (Cat. # TH 004) for harboring streptavidin and/or its conjugates onto SAMs. The biotin-streptavidin architcture is widely used in protein chip technology, though it is usually supported on disordered polymeric substrates (Wilson & Nock, Angew. Chem. Int. Ed. 42, 494, 2003; Schaeferling et al. Electrophoresis 23, 3097, 2002). ProChimia's biotinylated thiols can be used to prepare highly ordered architectures ideal for subsequent analytical studies.