Metalloproteins & Metal Homeostasis

Joseph A. Cotruvo Jr.

Turned microbial metal selectivity into a separation principle

The contribution

What this work established

Cotruvo and colleagues discovered lanmodulin, a bacterial protein that recognizes lanthanides with striking selectivity over calcium. Subsequent collaborative work demonstrated rare-earth recovery from mixtures using the protein. The research connects a microorganism’s ability to discriminate among elements with practical approaches to detecting and recovering strategically important metals.

Why this matters to microbial metallomics

This is a concrete example of microbial metallomics producing useful chemistry beyond clinical medicine. Understanding how organisms select scarce elements can inform resource recovery and environmental measurement. It also demonstrates why metal-binding specificity deserves direct study: chemically similar or abundant competing ions need not have equivalent biological access.

The next scientific question

The frontier is translating molecular selectivity into robust recovery and sensing systems for variable real-world materials, while evaluating performance, reuse, and environmental costs at larger scales.

Research background

Studies how bacteria recognize, acquire and use rare-earth elements. Research on the lanthanide-binding protein lanmodulin links microbial metal selectivity with protein engineering and opportunities for biological rare-earth separation.

The contribution is grounded in the linked sources. Its significance and future directions are this guide’s editorial synthesis. Inclusion does not imply endorsement of this website.