Luminescent Peptide Labeling Based on a Histidine‐Binding Iridium(III) Complex for Cell Penetration and Intracellular Targeting Studies

Lighting up the cell: Peptides that are site-specifically labeled with a luminescent iridium(III) complex at histidine residues can penetrate cell membranes effectively, showing intracellular distribution and efficient mitochondrial targeting (see figure, CPP=cell-penetrating peptide, MTS=mitochondria-targeting sequences). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.