| cytochrome-c oxidase | <enzyme> An enzyme complex of the inner mitochondrial membrane that catalyses the reaction between ferrocytochrome c and oxygen to yield ferricytochrome c and water. It is associated with the pumping of protons and the resultant phosphorylation of ADP to ATP. The reaction is the terminal event in the electron transport scheme by which oxygen is used for fuel combustion. It is a part of Complex IV of the respiratory chain. A deficiency of one or more of the polypeptides of this complex results in neuronal loss in brain leading to psychomotor retardation and neurodegenerative disease. Synonym: cytochrome aa3, indophenol oxidase, indophenolase. Chemical name: Ferricytochrome-c:oxygen oxidoreductase Registry number: EC 1.9.3.1 (12 Dec 1998) |
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| cytochrome-c peroxidase | <enzyme> A haemprotein which catalyses the oxidation of ferrocytochrome c to ferricytochrome c in the presence of hydrogen peroxide. Chemical name: Ferrocytochrome c:hydrogen-peroxide oxidoreductase Registry number: EC 1.11.1.5 (12 Dec 1998) |
| cytochromes | Heme oxidation-reduction reactions such as photosynthesis and respiration. (09 Oct 1997) |
| cytochylema | The more fluid portion of the cytoplasm. Origin: cyto-+ G. Chylos, juice (05 Mar 2000) |
| cytocidal | Causing the death of cells. Origin: cyto-+ L. Caedo, to kill (05 Mar 2000) |
| cytocide | <pharmacology> Any chemical that kills or destroys living cells. (09 Oct 1997) |
| cytoclasis | Fragmentation of cells. Origin: cyto-+ G. Klasis, a breaking (05 Mar 2000) |
| cytoclastic | Relating to cytoclasis. (05 Mar 2000) |
| cytoclesis | The influence of one cell on another. Synonym: biotaxis, cytobiotaxis. Origin: cyto-+ G. Klesis, a call (05 Mar 2000) |
| cytocrine gland | A cell which secretes things that move directly from cell to cell. (09 Oct 1997) |
| cytocrine secretion | The transfer of secretory material from one cell to another, such as the transfer of melanin granules from melanocytes to epidermal cells. (05 Mar 2000) |
| cytocuprein | Former terms for copper-containing proteins found in human erythrocytes and other tissues. See: superoxide dismutase, ceruloplasmin. Synonym: cerebrocuprein, erythrocuprein, haemocuprein, hepatocuprein. (05 Mar 2000) |
| cytocyst | Rarely used term for the bladder-like remains of the red blood cell or tissue cell that encloses a mature schizont. Origin: cyto-+ G. Kystis, bladder (05 Mar 2000) |
| cytodiagnosis | Diagnosis of the type and, when feasible, the cause of a pathologic process by means of microscopic study of cells in an exudate or other form of body fluid. (12 Dec 1998) |
| cytodieresis | Synonym: cytokinesis. Origin: cyto-+ G. Diairesis, division (05 Mar 2000) |