Complex interactions at the helix-helix interface stabilize the glycophorin A transmembrane dimer.

Abstract excerpt

To explore the residue interactions in the glycophorin A dimerization motif, an alanine scan double mutant analysis at the helix-helix interface was carried out. These data reveal a combination of additive and coupled effects. The majority of the double mutants are found to be equally or slightly more stable than would be predicted by the sum of the energetic cost of the single-point mutants. The proximity of the...

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