| formate | <chemistry> A salt of formic acid. Alternative forms: formiate. See: Formic. Source: Websters Dictionary (01 Mar 1998) |
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| formate dehydrogenases | <enzyme> Flavoproteins that catalyze reversibly the reduction of carbon dioxide to formate. Many compounds can act as acceptors, but the only physiologically active acceptor is NAD. The enzymes are active in the fermentation of sugars and other compounds to carbon dioxide and are the key enzymes in obtaining energy when bacteria are grown on formate as the main carbon source. They have been purified from bovine blood. Chemical name: Formate:NAD+ oxidoreductase Registry number: EC 1.2.1.2 (12 Dec 1998) |
| formate hydrogen lyase | <enzyme> Consists of EC 1.2.1.2, formate dehydrogenase, plus EC 1.12.1.2, hydrogen dehydrogenase Registry number: EC 1.- Synonym: formate dehydrogenase h, fdhh gene product, fdhf gene product, hyc gene product (26 Jun 1999) |
| formate-NADP oxidoreductase | <enzyme> Separate from formate dehydrogenase Registry number: EC 1.6.- (26 Jun 1999) |
| formate-tetrahydrofolate ligase | <enzyme> An enzyme that catalyses the formation of 10-formyltetrahydrofolate from formate and tetrahydrofolate in the presence of ATP. This enzyme has been found in pigeon liver, human erythrocytes and some microorganisms. Chemical name: Formate:tetrahydrofolate ligase (ADP-forming) Registry number: EC 6.3.4.3 (12 Dec 1998) |
| formatio | A structure of definite shape or cellular arrangement. Synonym: formation. Origin: L. Fr. Formo, pp. -atus, to form (05 Mar 2000) |
| formatio reticularis | <anatomy, neurology> A region extending from the pons & medulla oblongata through the mesencephalon, characterised by a diversity of neurons of various sizes and shapes, arranged in different aggregations and enmeshed in a complicated fibre network. (12 Dec 1998) |
| formation | 1. The act of giving form or shape to anything; a forming; a shaping. 2. The manner in which a thing is formed; structure; construction; conformation; form; as, the peculiar formation of the heart. 3. A substance formed or deposited. 4. <geology> Mineral deposits and rock masses designated with reference to their origin; as, the siliceous formation about geysers; alluvial formations; marine formations. A group of beds of the same age or period; as, the Eocene formation. 5. The arrangement of a body of troops, as in a square, column, etc. Origin: L. Formatio: cf. F. Formation. Source: Websters Dictionary (01 Mar 1998) |
| formationes | Plural of formatio. (05 Mar 2000) |
| formative | 1. Giving form; having the power of giving form; plastic; as, the formative arts. "The meanest plant can not be raised without seed, by any formative residing in the soil." (Bentley) 2. Serving to form; derivative; not radical; as, a termination merely formative. 3. <biology> Capable of growth and development; germinal; as, living or formative matter. Origin: Cf. F. Formatif. Source: Websters Dictionary (01 Mar 1998) |
| formative cell | <embryology> The cell's of the blastocyst; collectively, these cells give rise to the embryo. (05 Mar 2000) |