Flavin-induced charge separation in transmembrane model peptides
Organic and Biomolecular Chemistry, ISSN: 1477-0520, Vol: 22, Issue: 29, Page: 5930-5935
2024
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Article Description
Hydrophobic peptide models derived from the α-helical transmembrane segment of the epidermal growth factor receptor were synthetically modified with a flavin amino acid as a photo-inducible charge donor and decorated with tryptophans along the helix as charge acceptors. The helical conformation of the peptides was conserved despite the modifications, notably also in lipid vesicles and multibilayers. Their ability to facilitate photo-induced transmembrane charge transport was examined by means of steady-state and time-resolved optical spectroscopy. The first tryptophan next to the flavin donor plays a major role in initiating the charge transport near the N-terminus, while the other tryptophans might promote charge transport along the transmembrane helix. These artificially modified, but still naturally derived helical peptides are important models for studying transmembrane electron transfer and the principles of photosynthesis.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85198081935&origin=inward; http://dx.doi.org/10.1039/d4ob00932k; http://www.ncbi.nlm.nih.gov/pubmed/38973494; https://xlink.rsc.org/?DOI=D4OB00932K; https://dx.doi.org/10.1039/d4ob00932k; https://pubs.rsc.org/en/content/articlelanding/2024/ob/d4ob00932k
Royal Society of Chemistry (RSC)
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