Figure 7From: Biological constraints limit the use of rapamycin-inducible FKBP12-Inp54p for depleting PIP2 in dorsal root ganglia neuronsEndogenous FKBP12 protein levels are significantly higher in DRG neurons when compared to HEK293 cells. A) Western blot of HEK293 cell lysates (from 4 separate cultures) and DRG lysates (dissected from three 8-week old WT mice) probed with antibodies to FKBP12 and beta-actin. B) Quantification of the FKBP12 protein levels, normalized to actin loading control. ***p < 0.0001. C) Section from WT DRG immunostained with antibodies to FKBP12 and counterstained with DRAQ5 to mark nuclei. Scale bar, 20 μm. D) Dissociated neurons stained with anti-βIII Tubulin (a neuron-specific marker), anti-FKBP12, and DRAQ5. Endogenous FKBP12 is present at much higher levels in neurons compared to non-neuronal cells (tubulin-, DRAQ5+ cells; p < 0.0001). Scale bar, 10 μm.Back to article page