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. 2013 Jan;141(1):105–117. doi: 10.1085/jgp.201210891

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© 2013 Wu et al.

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Figure 2. — Endogenous disulfide cross-linking between α R17C and a native Cys in pWT mβ3a. Either pWTα or R17C α was coexpressed with pWT mβ3a in HEK cells, and the channel complexes were extracted and denatured in SDS. The blots were developed with anti-BK α antibody, which reacts with both α (130 kD) and the cross-linked mβ3a dimer (∼160 kD).