| tetracosactide | <chemical> Alpha(1-24)-corticotropin. A synthetic polypeptide with adrenocorticotropic activity. Chemical name: alpha1-24-Corticotropin (12 Dec 1998) |
|---|---|
| tetracrotic | Denoting a pulse curve with four upstrokes in the cycle. Origin: tetra-+ G. Krotos, a striking (05 Mar 2000) |
| tetractinellid | <zoology> Any species of sponge of the division Tetractinellida. Also used adjectively. Source: Websters Dictionary (01 Mar 1998) |
| tetractinellida | <zoology> A division of Spongiae in which the spicules are siliceous and have four branches diverging at right angles. Synonym: Tetractinellinae. Origin: NL, from Gr. Tetra- +, ray, spoke. Source: Websters Dictionary (01 Mar 1998) |
| tetracuspid | Having four cusps. Synonym: quadricuspid. (05 Mar 2000) |
| tetracycline | <drug> Broad spectrum antibiotic that blocks binding of aminoacyl tRNA to the ribosomes of both gram-positive and gram-negative organisms (and those of organelles). Produced by Streptomyces aureofasciens. Other exaples include tetracycline, demeclocycline and doxycycline. (09 Oct 1997) |
| tetracycline 5a(11a)dehydrogenase | <enzyme> Catalyses the oxidation of 7-chloro-5a(11a)-dehydrotetracycline to 7-chlorotetracycline; uses nadp Registry number: EC 1.3.1.- (26 Jun 1999) |
| tetracycline resistance | Nonsusceptibility of a microbe (usually a bacterium) to the action of tetracycline, which binds to the 30s ribosomal subunit and prevents the normal binding of aminoacyl-trna. (12 Dec 1998) |
| tetracyclines | Closely congeneric derivatives of the polycyclic naphthacenecarboxamide. (gilman et al., goodman and gilman's the pharmacological basis of therapeutics, 8th ed, p1117) (12 Dec 1998) |
| tetrad | A group of four, four pollen grains remaining fused together at maturity. (09 Oct 1997) |
| tetradactyl | Having only four fingers or toes on a hand or foot. Synonym: quadridigitate. Origin: tetra-+ G. Daktylos, finger or toe (05 Mar 2000) |
| tetradactyle | <zoology> Tetradactylous. Origin: Cf. F. Tetradactyle. Source: Websters Dictionary (01 Mar 1998) |
| tetradactylous | <zoology> Having, or characterised by, four digits to the foot or hand. Origin: Gr.; (see Tetra-) + finger, toe. Source: Websters Dictionary (01 Mar 1998) |
| tetradecane | <chemistry> A light oily hydrocarbon, C14H30, of the marsh-gas series; so called from the fourteen carbon atoms in the molecule. Origin: Tetra- + Gr. Ten. Source: Websters Dictionary (01 Mar 1998) |
| tetradecanoic acid | <biochemistry> The myristoyl group is one of the less common fatty acyl residues of phospholipids in biological membranes but is found as an N terminal modification of a large number of membrane associated proteins and some cytoplasmic proteins. It is a common modification of viral proteins. In all known examples, the myristoyl residue is attached to the amino group of N terminal glycine. The specificity of the myristoyl transferase enzymes is extremely high with respect to the fatty acyl residue. For many proteins, the addition of the myristoyl group is essential for membrane association. There is some evidence that myristoylated proteins do not interact with free lipid bilayer, but require a specific receptor protein in the target membrane. (18 Nov 1997) |