Assertion: acetylcholine's effect | /r/HasProperty | nachrs
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text: If the modest effects of Bcl-X L on α4β2 nAChRs were due to interactions with the pre-M4 helix, we reasoned that they could be enhanced by mutating the alanine residues at positions 567 (α4) and 427 (β2) to isoleucine, as found in the α7 subunit.