| zeta | 1. 6th Letter of the Greek alphabet, &zeta, 2. In chemistry, denotes the sixth in a series, e.g., the sixth carbon from a functional group. 3. Symbol for electrokinetic potential. (05 Mar 2000) |
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| zeta crystallin-NADPH oxidoreductase | <chemical> Do not confuse with protein p36 (= annexin II); base sequence given in first source Synonym: p36 gene product, leishmania (26 Jun 1999) |
| zeta potential | <chemistry> The electrostatic potential of a molecule or particle, for example cell measured at the plane of hydrodynamic slippage outside the surface of the molecule or cell. Usually measured by electrophoretic mobility. Related to the surface potential and a measure of the electrostatic forces of repulsion the particle or molecule is likely to meet when encountering another of the same sign of charge. See: cell electrophoresis. (18 Nov 1997) |
| zeta sedimentation ratio | The ratio of the zetacrit to the haematocrit, normally 0.41 to 0.54 (41 to 54%); it is a sensitive indicator of the erythrocyte sedimentation rate (ESR) and, unlike the latter, is unaffected by anaemia, which tends to elevate the ESR. (05 Mar 2000) |
| zeta-carotene desaturase | <enzyme> Isolated from anabaena Registry number: EC 1.3.3.- Synonym: zds gene product (26 Jun 1999) |
| zetacrit | The packed cell volume produced by vertical centrifugation of blood in capillary tubes, allowing controlled compaction and dispersion of red blood cells; read with a haematocrit to produce the zeta sedimentation ratio. (05 Mar 2000) |
| zetaprotein | Glycoproteins found on the surfaces of cells, particularly in fibrillar structures. The proteins are lost or reduced when these cells undergo viral or chemical transformation. They are highly susceptible to proteolysis and are substrates for activated blood coagulation factor viii. The forms present in plasma are called cold-insoluble globulins. (12 Dec 1998) |