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Zinc holds together repeating protein domains that let some proteins grip DNA.
| Symbol | Zn |
|---|---|
| Atomic number | 30 |
| Standard atomic weight | 65.4 |
| Group | 12 |
| Period | 4 |
| Block | d-block |
| Category | Transition metal |
| Standard state | Solid |
| Discovered | 1746 |
Source: PubChem, Zinc (periodic table data, retrieved 2026-10-19). Group and period follow the standard 18-column periodic table.
Miller, McLachlan and Klug found that transcription factor IIIA from frog oocytes contains nine repeated units of about 30 amino acids, each with paired cysteines and histidines and folded around a zinc ion.
As reported in: Miller, McLachlan, Klug (1985). Repetitive zinc‐binding domains in the protein transcription factor IIIA from Xenopus oocytes.. The EMBO Journal. doi:10.1002/j.1460-2075.1985.tb03825.x
Found by name, common compounds and chemical formulas in each entry.
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