Zinc-dependent enzyme or structural protein (None)

Zinc-dependent enzymes and structural proteins constitute a diverse class of proteins in which zinc ions are essential either for **catalytic activity** or **structural stabilization**. Zinc enzymes include hydrolases, dehydrogenases, oxidases, and lyases, among others, with functions ranging from metabolic transformation to peptide hydrolysis[3][5][7]. Zinc structural proteins, such as zinc finger domains, provide scaffolding for DNA/RNA binding or protein-protein interactions and are crucial in gene regulation and cell signaling[2][4]. Zinc is usually coordinated by combinations of cysteine, histidine, aspartate, or glutamate residues in a tetrahedral or less commonly, trigonal bipyramidal/octahedral geometry[1][4]. Disruptions in zinc-dependent protein function contribute to many disease states, including cancer, neurodegeneration, cardiovascular disease, and infection[6]. Therapeutic interventions often focus on inhibiting zinc metalloenzymes or modulating zinc homeostasis, but safety concerns arise due to zinc’s ubiquitous role across many proteins and systems[6]. For structured database entries, it is necessary to specify the **individual protein** (e.g., "Matrix metalloproteinase 9", "Carbonic anhydrase II", "Zinc finger protein 1"), rather than this collective category.

Other names

Zinc enzymeZinc metalloenzymeZinc finger proteinZinc-dependent protein

Inhibition of zinc binding site (chelators or site-directed inhibitors block catalytic or structural function); Allosteric modulation (some drugs indirectly affect activity by altering zinc site geometry); Substrate competition (competing with natural substrates at the zinc-bound active site)