Figure 2.

a) The complex of 2 and streptavidin is unable to enter cells and does not induce protein dimerization until UV irradiation generates 3. b) Rac-FKBP was used together with membrane localized FRB. In the absence of UV light, cells displayed normal cell edges (left); however, upon irradiation and Rac localization, cell ruffling is apparent (right). Adapted with permission from Ref. [10]. Copyright 2011 American Chemical Society.