| Z | <abbreviation> Benzyloxycarbonyl (carbobenzoxy); atomic number; symbol for an amino acid that is either glutamic acid, glutamine, or a substance that yields glutamic acid on acid hydrolysis of peptides (e.g., 4-carboxyglutamate or 5-oxoproline); carbobenzoxy; in italics, zusammen. (05 Mar 2000) |
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| Z band | <cell biology> The line formed where actin filaments attach between two sarcomeres. (11 May 1997) |
| Z chromosome | <genetics> This is a sex chromosome in certain animals such as chickens and moths. In the Z chromosome karyotype, females are heterogametic, so males are ZZ and females are WZ. (11 May 1997) |
| Z disc | <cell biology> Region of the sarcomere into which thin filaments are inserted. Location of _ actinin in the sarcomere. (18 Nov 1997) |
| Z disk | <cell biology> The line formed where actin filaments attach between two sarcomeres. (11 May 1997) |
| Z filament | The thin zig-zag structure at the Z line of striated muscle fibres to which the actin filament's attach. (05 Mar 2000) |
| Z gene | The structural gene for beta-galactosidase. (05 Mar 2000) |
| Z glucanase | <enzyme> Beta-glucanase component of zymolyase Registry number: EC 3.2.1.- Synonym: z-glucanase (26 Jun 1999) |
| Z line | <cell biology> The line formed where actin filaments attach between two sarcomeres. (11 May 1997) |
| Z procedure | Surgery to elongate a contracted scar or to rotate tension 90 |
| Z protease | <enzyme> Component of zymolyase Registry number: EC 3.4.- Synonym: z-protease (26 Jun 1999) |
| Z scheme of photosynthesis | <biochemistry, biology> A schematic representation of the light reactions of photosynthesis, in which the photosynthetic reaction centres and electron carriers are arranged according to their electrode potential (free energy) in one dimension and their reaction sequence in the second dimension. This gives a Z shape, the two reaction centres (of photosystems I and II) being linked by the photosynthetic electron transport chain. (18 Nov 1997) |
| Z-7-dodecen-1-yl acetate | <cell biology, chemical> This chemical acts as a mating-signaling pheromone in a wide variety of insects and in elephants, although it is produced in conjunction with other chemicals so that the different species do not respond to each others signals. (11 May 1997) |
| Z-DNA | <molecular biology> A form of DNA, or a region of DNA, in which the helix is flipped into a lefthanded helix, characterised by alternating purines and pyrimidines. This region is thought to be the target of a DNA-binding protein. (20 Jun 2000) |
| z-pinch | <radiobiology> Pinch device in which the externally-driven pinching current goes in the z direction (parallel to / through the cylindrical plasma). (09 Oct 1997) |