| PS | pacemaker syndrome; paired stimulation; paradoxical sleep; paraspinal; parasympathetic; Parkinson sy... |
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| PSK | protein serine kinase |
| SDH | serine dehydratase; sorbitol dehydrogenase; spinal dorsal horn; subdural hematoma; succinate dehydro... |
| Ser | serine; serology; serous; service |
| SGP | serine glycerophosphatide; sialoglycoprotein; Society of General Physiologists; soluble glycoprotein... |
| Pseudomonas serine proteinase | <enzyme> Extracellular proteases I, II, III have role in infectious process of pseudomonas aeruginosa; included in the group of microbial serine proteinases EC 3.4.21.4 Registry number: EC 3.4.21.- Synonym: pseudomonas aeruginosa protease, pseudomonas alkaline protease (26 Jun 1999) |
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| serine | <amino acid> Is synthesised by the body from the amino acids glycine or threonine. Its production requires adequate amounts of B-7 (niacin), B-6 and folic acid. It is needed for the metabolism of fats and fatty acids, muscle growth and a healthy immune system. It aides in the production of immunoglobulins and antibodies. It is a constituent of brain proteins and nerve coverings. It is important in the formation of cell membranes, involved in the metabolism of purines and pyrimidines and muscle synthesis. It is also used in cosmetics as a skin moisturizer. Serine is abundant in meats and dairy products, wheat gluten, peanuts and soy products, all of which are common allergens. There is some concern that elevated serine levels can cause immune suppression and psychological symptoms as in cerebral allergies. (22 May 1997) |
| serine carboxypeptidase | <enzyme> Carboxypeptidase z (scpz gene product) isolated from absidia zychae Registry number: EC 3.4.16.1 Synonym: carboxypeptidase w, carboxypeptidase yscy, carboxypeptidase cpd-s3, ybr1015 gene product, carboxypeptidase z, scpz gene product (26 Jun 1999) |
| serine deaminase | <enzyme> A pyridoxal-phosphate protein that catalyses the deamination of threonine to 2-ketobutyrate and ammonia. The role of this enzyme can be biosynthetic or biodegradative. In the former role it supplies 2-ketobutyrate required for isoleucine biosynthesis, while in the latter it is only involved in the breakdown of threonine to supply energy. Chemical name: L-Threonine hydro-lyase (deaminating) Registry number: EC 4.2.1.16 (12 Dec 1998) |
| serine dehydrase | <enzyme> An enzyme of the lyase class that catalyses the dehydration and deamination of l-serine to form pyruvate. Chemical name: L-Serine hydro-lyase (deaminating) Registry number: EC 4.2.1.13 (12 Dec 1998) |
| serine diazoacetate | <drug> An analogue of glutamine that competitively inhibits various pathways in which glutamine is metabolised, hence an antibiotic and antitumour agent. (18 Nov 1997) |
| serine endopeptidase | <enzyme> Proteolytic enzyme from pronase& maise Registry number: EC 3.4.99.- Synonym: serine endopeptidase, maise (26 Jun 1999) |
| serine-glyoxylate aminotransferase | <enzyme> Pea enzyme; also uses asparagine as amino donor with either pyruvate or glyoxylate as acceptor Registry number: EC 2.6.1.45 Synonym: asparagine aminotransferase (26 Jun 1999) |
| serine protease | <enzyme> One of a group of endoproteases from both animal and bacterial sources that share a common reaction mechanism based on formation of an acyl enzyme intermediate on a specific active serine residue. Serine proteases are all irreversibly inactivated by a series of organophosphorus esters, such as di isopropylfluorophosphate (DFP) and by naturally occurring inhibitors (serpins). This group includes enzymes active in digestion, blood clotting, immune reactios, and fertilization of the ovum. Examples are trypsin, chymotrypsin and the bacterial enzyme subtilisin. (18 Nov 1997) |
| serine protease inhibitor | A class of highly polymorphic inhibitors of trypsin, elastase, and certain other proteases synthesised by hepatocytes and macrophages See: a1-antitrypsin. Synonym: serpins. (05 Mar 2000) |
| serine proteinase inhibitors | Exogenous or endogenous compounds which inhibit serine proteinases. (12 Dec 1998) |
| serine proteinases | <enzyme> Peptide hydrolases which have an active centre histidine and serine involved in the catalytic process. This group of enzymes is inactivated by organic fluorophosphates such as diisopropylphosphofluoridate (dipf). Registry number: EC 3.4.21 (12 Dec 1998) |
| serine-pyruvate aminotransferase | <enzyme> Do not confuse with alanine-glyoxylate aminotransferase (EC 2.6.1.44), even though they may be products of the same gene; index whichever is discussed or both Registry number: EC 2.6.1.51 Synonym: serine aminotransferase, serine-pyruvate transaminase (26 Jun 1999) |
| serine sulfhydrase | <enzyme> A multifunctional pyridoxal phosphate enzyme. In the second stage of cysteine biosynthesis it catalyses the reaction of homocysteine with serine to form cystathionine with the elimination of water. Chemical name: L-Serine hydro-lyase (adding homocysteine) Registry number: EC 4.2.1.22 (12 Dec 1998) |
| serine sulfhydrolyase | <enzyme> Serine + hydrogen sulfide gives cysteine Registry number: EC 4.2.99.- (26 Jun 1999) |