Fig. 3. LINC-FRAP assay.
(a) Schematic describing use of LINC-FRAP in synapses. Mobility of a CRY2olig-fused protein (blue) is restricted after light-induced clustering, which restricts the mobility of an interacting FP-tagged protein (red). (b) LINC-FRAP control experiments in primary neuronal cultures showing exchange of CRY2olig-mCh-homer1c is delayed at the indicated photobleached synapse (arrowhead) after blue light clustering. (c) LINC-FRAP quantification before and after blue light, testing homer/PSD95 and homer/homer interactions at synapses.