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Two edges are called P 4-adjacent if they belong to the same P 4 (chordless path on 4 vertices). P 4-components, in our terminology, are the equivalence classes of the transitive closure of the P 4-adjacency relation. In this paper, new results on the structure of P 4-components are obtained. On the one hand, these results allow us to improve the complexity(More)
While amphipols have been proven useful for refolding of seven transmembrane helical (7-TM) proteins including G-protein-coupled receptors (GPCRs) and it could be shown that an amphipol environment is in principle suitable for NMR structural studies of the embedded protein, high-resolution NMR insights into amphipol refolded and isotopically labeled GPCRs(More)
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