Molecular recognition at the membrane-water interface: controlling integral peptide helices by off-membrane nucleobase pairing.
2010
The aggregation and organization of membrane proteins and transmembrane peptides is related to the interacting molecular species itself and strongly depends on the lipid environment. Because of the complexity and dynamics of these interactions, they are often hardly traceable and nearly impossible to predict. For this reason, peptide model systems are a valuable tool in studying membrane associated processes since they are synthetically accessible and can be readily modified. To control and study the aggregation of peptide transmembrane domains (TMDs) the interacting interfaces of the TMDs themselves can be altered. A second less extensively studied approach targets the TMD assembly by using interaction and recognition of domains at the membrane outside as frequently found in the membrane protein interplay and protein assembly. In the present study, double helical transmembrane domains were designed and synthesized on the basis of a recently reported d,l-alternating peptide pore motif derived from gramici...
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