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Zinc's Cellular Gatekeeper Discovered
18 May
Summary
- A new molecule, ZNG1, acts as a zinc metallochaperone.
- ZNG1 is crucial for distributing zinc to vital proteins.
- This discovery aids understanding of zinc deficiency's impact.
Scientists have pinpointed the first molecule responsible for delivering zinc to critical proteins within cells. This newly identified molecule, named ZNG1, functions as a metallochaperone, a vital component in cellular processes. Its primary role is to ensure that essential proteins, which require zinc for structure and function, receive this vital metal.
Research indicates that ZNG1 is particularly important when zinc levels are low. It appears to act as a gatekeeper, prioritizing zinc distribution to proteins essential for survival, such as METAP1. This mechanism is conserved across species, including humans, zebrafish, and mice, highlighting its evolutionary significance.
Experiments with mutated ZNG1 in mice and zebrafish demonstrated severe developmental defects when zinc was scarce, confirming ZNG1's role in proper zinc utilization. The discovery offers a new avenue for understanding and potentially treating zinc deficiency, a global health concern impacting over 17% of the world's population.
