Abstract Reversible turn-on fluorescent sensors of Cu(II) are of high interest for biological studies. We re-investigate a reported sensor, showing that turn-on occurs via irreversible Cu(II)-induced sensor oxidation only in the presence of acetonitrile. This prevents its application in biological…
Abstract Copper(II) forms well-known and stable complexes with peptides having histidine at position 2 (Xxx-His) or 3 (Xxx-Zzz-His). Their properties differ considerably due to the histidine positioning. Here we report that in the hybrid motif Xxx-His-His, the Cu(II)-complexes can be switched…
Abstract It was shown that His3 of human copper transporter 1 (hCtr1) prompts the ATCUN-like Cu(II) coordination for model peptides of the hCtr1 N-terminus. Its high Cu(II) affinity is a potential driving force for the transfer of Cu(II) from extracellular Cu(II) carriers to hCtr1. Having a…
Summary Thiosemicarbazones (TSCs) are a class of strong metal ion ligands, which are currently being investigated for several applications, such as anticancer treatment. In addition to these ligands only, which exert their activity upon interaction with metal ions in cells, preformed metal–TSC…
