(A) Western blot of soluble HTT (ab-MAB5492), HTT pS13 (ab-CHDI-90001039-1) and HTT aggregates (ab-MAB5492), upon coexpression of the HTTex1 72Q eGFP or HTTex1 72Q eGFP S13A/S16A variant with TBK1 KD, TBK1 or TBK1 Δ690-713 for 48 hour in HEK293 cells. (B) The graph indicates the calculated fold changes in HTT, HTT pS13 ratio to total HTT and HTT aggregates all compared to the levels in TBK1 KD from the experiments like in A (bottom panel normalized to Tubulin, n=3). 