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Updated: Jun 21, 2026

Standards for Quantitative Metalloproteomic Analysis Using Size Exclusion ICP-MS
Published on: April 13, 2016
Metalloproteins and metal sensing.
Kevin J Waldron1, Julian C Rutherford, Dianne Ford
1Cell & Molecular Biosciences, Medical School, Newcastle University, Newcastle NE2 4HH, UK.
Understanding metalloprotein function requires knowing why specific metal-protein partnerships form and how cells maintain metal homeostasis. This involves discovering cellular metal sensors that distinguish between elements for proper metalloprotein function.
Area of Science:
- Biochemistry
- Bioinorganic Chemistry
- Cell Biology
Background:
- * Approximately 50% of enzymes require a specific metal cofactor for their catalytic activity.
- * The precise reasons for specific metal-protein partnerships and their evolutionary maintenance remain incompletely understood.
- * Cellular metal concentrations are tightly regulated, necessitating sophisticated mechanisms for metal homeostasis.
Purpose of the Study:
- * To investigate the fundamental principles governing metal-protein partnerships.
- * To explore the evolutionary and environmental factors influencing metal-cofactor selection.
- * To identify and characterize novel metal-sensing mechanisms crucial for cellular metal homeostasis.
Main Methods:
- * Comparative analysis of metalloprotein databases.
- * Bioinformatic approaches to study metal availability over geological time.
- * Investigation of cellular metal ion transport and sensing pathways.
Main Results:
- * Metal availability, varying across habitats and geological eras, partially explains metal-protein associations.
- * Cellular metal homeostasis relies on effective metal sensors.
- * A critical challenge lies in the ability of metal sensors to differentiate between chemically similar inorganic elements.
Conclusions:
- * Understanding metalloprotein function necessitates deciphering the origins and maintenance of metal-protein partnerships.
- * The discovery of accurate metal-sensing mechanisms is paramount for cellular metal homeostasis.
- * Distinguishing between inorganic elements is a key function of cellular metal sensors.
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