| S-adenosylmethionine-dedimethylamino-4-aminoanhydrotetracycline N-methyltransferase | <enzyme> Catalyses the dimethylation of dedimethylamino-4-aminoanhydrotetracycline to yield anhydrotetracycline Registry number: EC 2.1.1.- (26 Jun 1999) |
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| S-adenosylmethionine-dependent phosphate methyltransferase | <enzyme> A membrane-bound, phosphorylated oligosaccharide-specific enzyme that selectively methylates the phosphate group of mannose-6-phosphate Registry number: EC 2.1.1.- Synonym: adomet-dependent phosphate methyltransferase, adomet-po4 methyltransferase, mannose-6-phosphate methyltransferase (26 Jun 1999) |
| S-adenosylmethionine-erythromycin O-methyltransferase | <enzyme> Converts erythromycin c to erythromycin a in the presence of s-adenosylmethionine Registry number: EC 2.1.1.- Synonym: erythromycin o-methyltransferase (26 Jun 1999) |
| S-adenosylmethionine-tocopherol methyltransferase | <enzyme> Catalyses methylation of positions 7 or 8 of the tocol ring, forming gamma-tocopherol (7,8-dimethyltocol); see also EC 2.1.1.95, which converts gamma-tocopherol to alpha-tocopherol (5,7,8-trimethyltocol) Registry number: EC 2.1.1.- Synonym: sam-tocopherol methyltransferase (26 Jun 1999) |
| S-adenosylmethionine-vitexin 2''-O-rhamnoside-7-O-methyltransferase | <enzyme> Catalyses the a-ring methylation of the flavonoid vitexin rhamnoside in oat leaves Registry number: EC 2.1.1.- Synonym: am-vr-methyltransferase, vitexin rhamnoside methyltransferase (26 Jun 1999) |
| S-alkylcysteine lyase | <enzyme> Produces pyruvic acid, ammonia and a thiol; consider also glutamine transaminase k, which has cysteine conjugate beta-lyase activity Registry number: EC 4.4.1.6 Synonym: cysteine conjugate beta-lyase (26 Jun 1999) |
| S-BP line | A line connecting the sella with the Bolton point; it indicates the posterior portion of the cranial base in cephalometrics. (05 Mar 2000) |
| s-cone | Short wavelength sensitive c. (blue c.). (05 Mar 2000) |
| S-linalool synthase | <enzyme> Converts geranylpyrophosphate via a linalyl cation and addition of h2o to form the monoterpene s-linalool (3,7-dimethylocta-1,6-dien-3-ol) Registry number: EC 4.2.1.- (26 Jun 1999) |
| S-mephenytoin N-demethylase | <enzyme> Catalyses the n-demthylation of s-mephenytoin; an isoform of cytochrome p-450 active in liver microsomes Registry number: EC 1.- Synonym: mephenytoin demethylase, cytochrome p-450 cyp2b6, cyp2b6, cytochrome p4502b6 (26 Jun 1999) |
| S-N line | A line connecting a point (S) representing the centre of the sella turcica with the frontonasal junction (N); it denotes the anterior portion of the cranial base in cephalometrics. (05 Mar 2000) |
| S-N-A angle | In cephalometrics, an angle measuring the anteroposterior relationship of the maxillary basal arch on the anterior cranial base; it shows the degree of maxillary prognathism. See: subspinale. Origin: sella-nasion-subspinale (or point A) (05 Mar 2000) |
| S-N-B angle | An angle showing the anterior limit of the mandibular basal arch in relation to the anterior cranial base. See: supramentale. Origin: sella-nasion-supramentale (or point B) (05 Mar 2000) |
| S-phenacylglutathione reductase | <enzyme> Toxic alpha-haloketones react nonenzymatically to form s-phenacylglutathione which is reduced to the corresponding non-toxic alkylketone Registry number: EC 1.8.4.- (26 Jun 1999) |
| S-receptor kinase | <enzyme> Srk - s-receptor kinase; from brassica oleracea; amino acid sequence has been determined Registry number: EC 2.7.1.- Synonym: srk gene product (26 Jun 1999) |