TLR7 dimers exist independent of GS-9620 binding.

Immunoblot analysis of whole cell lysates of Huh7 cells transfected with V5-tagged TLR7 (TLR7-V5) or HA-tagged TLR7 (TLR7-HA) or HA-tagged TLR9 (TLR9-HA) untreated or treated with increasing amounts of GS-9620 (0.1μM, 1μM and 5μM) for 1 hour before preparation of cell lysates and immunoprecipitation (IP) analysis. Lysates were immunoprecipitated with anti-V5 agarose (panel C,D) and immunoblot probed with anti-V5 mAb (panel A,C) or anti-HA mAb (panel B,D). Total cell lysates used in panels A and B were probed with anti-V5 mAb and anti-HA mAb respectively, to control for protein expression and loading.