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Analytical size-exclusion chromatography (SEC) and SDS-PAGE analysis of the optimized α7-nAChR. The Taeniopygia guttata glycosylation site-mutated α7-nAChR (aa26-496) proteins without (26-496/N–) (A, B) and with 7 GSA linker replacement (26-496/N–/7GSA) (C, D) were separated on a Superose 6 10/300 GL gel filtration column (GE Healthcare) at a flow rate of 0.5 mL/min. α7-nAChRs from the pooled fractions after SEC were detected using SDS-PAGE (B, D).
