Multiple endogenous metalloenzymes

Metalloenzymes are a diverse class of proteins that incorporate a metal ion as a functional cofactor, which is indispensable for their catalytic activity or structural integrity [Source: UniProt, "Metalloprotein", 2024]. These enzymes are involved in a wide array of essential biological functions, including the regulation of oxidative stress, signal transduction, and the synthesis of neurotransmitters [Source: NCBI, "Metalloenzymes", 2023]. The designation "multiple endogenous metalloenzymes" is frequently used in pharmacology to describe the broad-spectrum activity of chelating agents or non-selective inhibitors that affect various metal-dependent pathways simultaneously [Source: PubChem, "Chelating Agents", 2024]. For instance, drugs like penicillamine or EDTA work by sequestering metal ions such as copper, lead, or zinc, thereby inhibiting the activity of any enzyme that relies on those specific ions [Source: StatPearls, "Chelation Therapy", 2023]. While this mechanism is therapeutically effective for treating heavy metal poisoning or copper overload disorders like Wilson's disease, it lacks the specificity found in modern targeted therapies [Source: PubMed, PMID: 31564432]. Consequently, targeting multiple metalloenzymes can lead to significant safety concerns, including the depletion of essential trace minerals and the unintended disruption of vital metabolic processes across multiple organ systems [Source: NIH, "Dietary Supplement Fact Sheets", 2024]. This broad approach to enzyme inhibition is generally considered a therapeutic challenge due to the high risk of off-target effects and systemic toxicity [Source: PubMed, PMID: 28451452].

Other names

MetalloenzymesMetal-dependent enzymesMetalloproteins

Inhibition of enzymatic activity through the chelation of essential metal cofactors or competitive binding at the metal-active site.