| peptidyltransferase | <enzyme> An enzyme that catalyses the transfer of aminoacyl-trna to formyl-methionine-trna or peptidyl-trna during peptide chain elongation. It is a part of the 50 s (bacteria) and 60 s (eukaryotes) ribosomal subunits. Integral enzymic activity of the large subunit of a ribosome, catalysing the formation of a peptide bond between the carboxy terminus of the nascent chain and the amino group of an arriving tRNA associated amino acid. Chemical name: Peptidyl-tRNA:aminoacyl-tRNA N-peptidyltransferase Registry number: EC 2.3.2.12 (12 Dec 1998) |
|---|---|
| peptization | In colloid chemistry, an increase in the degree of dispersion, tending toward a uniform distribution of the dispersed phase. (05 Mar 2000) |
| peptococcaceae | A family of bacteria found in the mouth and intestinal and respiratory tracts of man and other animals as well as in the human female urogenital tract. Its organisms are also found in soil and on cereal grains. (12 Dec 1998) |
| peptococcus | A genus of gram-positive, anaerobic, coccoid bacteria that is part of the normal flora of the mouth, upper respiratory tract, and large intestine in humans. Its organisms cause infections of soft tissues and bacteraemias. (12 Dec 1998) |
| Peptococcus aerogenes | Former name for Peptostreptococcus asaccharolyticus. (05 Mar 2000) |
| Peptococcus asaccharolyticus | Former name for Peptostreptococcus asaccharolyticus. (05 Mar 2000) |
| Peptococcus constellatus | A species found in tonsils, purulent pleurisy, appendix, the nose, throat, and gums, and infrequently on the skin and in the vagina. (05 Mar 2000) |
| Peptococcus niger | A species found once, in the urine of an aged woman; type species of the genus Peptococcus. (05 Mar 2000) |
| peptocrinine | An extract of the intestinal mucosa resembling secretin. (05 Mar 2000) |
| peptogen | <physiology> A substance convertible into peptone. Origin: Peptone + -gen. Source: Websters Dictionary (01 Mar 1998) |
| peptogenic | Peptogenous 1. Producing peptones. 2. Promoting digestion. (05 Mar 2000) |
| peptogenous | <physiology> Capable of yielding, or being converted into, peptone. Source: Websters Dictionary (01 Mar 1998) |
| peptohydrochloric | <physiology> Designating a hypothetical acid (called peptohydrochloric acid, pepsinhydrochloric acid, and chloropeptic acid) which is supposed to be formed when pepsin and dilute (0.1-0.4 per cent) hydrochloric acid are mixed together. See: Peptone, and Hydrochloric. Source: Websters Dictionary (01 Mar 1998) |
| peptoid | A peptide with one or more non-amino acyl groups (e.g., sugar, lipid, etc.) covalently linked to the peptide. (05 Mar 2000) |
| peptolide | 1. A cyclic depsipeptide; e.g., valinomycin. 2. A heteromeric depsipeptide. (05 Mar 2000) |