| zinc finger | <molecular biology> A specialised protein group that is characterised by a single zinc atom associated with DNA binding proteins. A loop of 12 amino acids contains either 2 cysteine and 2 histidine groups (a cysteine histidine zinc finger) or 4 cysteines (a cysteine cysteine zinc finger), that directly co ordinate a zinc atom. The loops (usually present in multiples) intercalate directly into the DNA helix. Originally identified in the RNA polymerase III transcription factor TFIIIA. (18 Nov 1997) |
|---|---|
| zinc fingers | Domains in DNA- and RNA-binding proteins that contain amino acids which are folded into a single structural unit around a zinc atom that links two cysteines and two histidines. Each finger is postulated to recognise a specific sequence of about five nucleotide pairs. (12 Dec 1998) |
| zinc fume fever | An occupational disease, characterised by malaria-like symptoms, due to inhalation of particles and fumes of metallic oxides. Fumes are formed by evaporation at very high temperature and condensation in air into fine particles. Synonym: brass founder's ague, foundryman's fever, metal fume fever, zinc fume fever. (05 Mar 2000) |
| zinc gelatin | Zinc oxide, gelatin, glycerin, and purified water; used topically as a protectant. (05 Mar 2000) |
| zinc iodide | ZnI2;has been used as an antiseptic and astringent. (05 Mar 2000) |
| zinc isotopes | Stable zinc atoms that have the same atomic number as the element zinc, but differ in atomic weight. Zn-66-68, and 70 are stable zinc isotopes. (12 Dec 1998) |
| zinc oxide | <chemical> A mild astringent and topical protectant with some antiseptic action. It is also used in bandages, pastes, ointments, dental cements, and as a sunblock. Pharmacological action: dermatologic agents, sunscreening agents. Chemical name: Zinc oxide (ZnO) (12 Dec 1998) |
| zinc oxide and eugenol | Used as a base material beneath metallic dental restorations and as a temporary filling material or impression material; setting and hardening result from complex reactions between the powder and the eugenol. (05 Mar 2000) |
| zinc oxide-eugenol cement | Least irritating of the cements. The powder is essentially zinc oxide with strengtheners and accelerators. The liquid is basically eugenol. (boucher's clinical dental terminology, 4th ed, p50) (12 Dec 1998) |
| zinc permanganate | Action is similar to that of potassium permanganate, but more astringent; used in urethritis, by injection or douche in a 1:4000 solution. (05 Mar 2000) |
| zinc peroxide | ZnO2;a yellowish white powder, insoluble in water and decomposed by acids; used in pharmaceutical preparations. Synonym: zinc superoxide. (05 Mar 2000) |
| zinc phenolsulfonate | Used as an intestinal antiseptic and locally as an astringent in chronic inflammation of the mucous membranes. Synonym: zinc sulfocarbolate. (05 Mar 2000) |
| zinc phosphate cement | <chemical> A material used for cementation of inlays, crowns, bridges, and orthodontic appliances and occasionally as a temporary restoration. It is prepared by mixing zinc oxide and magnesium oxide powders with a liquid consisting principally of phosphoric acid, water, and buffers. Chemical name: Phosphoric acid, zinc salt (2:3) (12 Dec 1998) |
| zinc phosphide | Zn3P2;used as a bait poison for the extermination of rats and mice. (05 Mar 2000) |
| zinc poisoning | <disease> Symptoms of zinc poisoning include chills, fever, headache and vomiting. (11 May 1997) |