K. Franz

Publications116
h-index37
Citations4,409
Highly Influential Citations66
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Application of metal coordination chemistry to explore and manipulate cell biology.
TLDR
Inorganic compounds should not be overlooked in the realm of chemical biology, since their distinctive electronic, chemical, and photophysical properties render them particularly useful for a variety of applications.
Coordination chemistry of copper proteins: how nature handles a toxic cargo for essential function.
A Mets motif peptide found in copper transport proteins selectively binds Cu(I) with methionine-only coordination.
TLDR
It is established that a relatively simple peptide containing an MX(2)MX( 2)M motif is sufficient to bind Cu(I) with an affinity that corresponds well with its proposed biological function of extracellular copper acquisition.
Protein alignment by a coexpressed lanthanide-binding tag for the measurement of residual dipolar couplings.
A protein fusion construct of human ubiquitin with an N-terminal lanthanide binding tag (LBT) enables observation of long-range orientational restraints in solution NMR from residual dipolar…
Structural origin of the high affinity of a chemically evolved lanthanide-binding peptide.
Lanthanide‐Binding Tags as Versatile Protein Coexpression Probes
TLDR
This work presents peptide sequences with a 40‐fold higher affinity for Tb3+ ions and significantly brighter luminescence intensity compared with existing peptides, and introduces the LBT strategy, a new alternative for expressing fluorescent fusion proteins by routine molecular biological techniques.
Exploiting innate immune cell activation of a copper-dependent antimicrobial agent during infection.
Model peptides provide new insights into the role of histidine residues as potential ligands in human cellular copper acquisition via Ctr1.
TLDR
Results from live cell studies support the hypothesis that extracellular amino-terminal His residues directly participate in the copper transport function of Ctr1, and suggest that the histidine domains may play a direct role in copper acquisition from serum copper-binding proteins and in facilitating the reduction of Cu(II) to the active Ctr 1 substrate, Cu(I).
Fe(III)-coordination properties of neuromelanin components: 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid.
TLDR
Oxidation studies reveal that iron accelerates the air oxidation of DHI and DHICA, which are stronger Fe(III) chelates than catechol, dopamine, and Me-DHI at pH values from 3 to 10.
A Powerful Combinatorial Screen to Identify High‐Affinity Terbium(III)‐Binding Peptides
TLDR
A new screening methodology is presented for the identification of new LBT sequences with high affinity for Tb3+ ions and intense luminescence properties that demonstrated a 140‐fold increase in affinity over previously reported lanthanide‐binding peptides.
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