Dual Click reactions to micropattern proteins

In the study described in this report orthogonal Click reactions were utilized to immobilize two different proteins on surfaces side-by-side and in multilayer constructs. Alkyne- and azide-functionalized poly(ethylene glycol) hydrogel features were fabricated. Copper-catalyzed Huisgen 1,3 dipolar cycloaddition and oxime chemistry were employed to conjugate an azide-functionalized ubiquitin and oxoamide-modified myoglobin, respectively. Multicomponent patterning was verified by fluorescence imaging.