Synthetic peptides and four-helix bundle proteins as model systems for the pore-forming structure of channel proteins. II. Transmembrane segment M2 of the brain glycine receptor is a plausible candidate for the pore-lining structure.

@article{Reddy1993SyntheticPA,
  title={Synthetic peptides and four-helix bundle proteins as model systems for the pore-forming structure of channel proteins. II. Transmembrane segment M2 of the brain glycine receptor is a plausible candidate for the pore-lining structure.},
  author={G. Laxma Reddy and Tsugio Iwamoto and John M Tomich and M S Montal},
  journal={The Journal of biological chemistry},
  year={1993},
  volume={268 20},
  pages={
          14608-15
        }
}
A synthetic 23-mer peptide (M2GlyR) with the amino acid sequence of the putative transmembrane segment M2 of the strychnine-binding alpha subunit of the inhibitory glycine receptor forms anion-selective channels in phospholipid bilayers. The most frequent events show single-channel conductances, gamma, of 25 pS and 49 pS in symmetric 0.5 M KCl with channel open lifetimes, tau o, in the millisecond time range. These properties match those of authentic glycine receptors studied in inside-out… CONTINUE READING

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