| S-sulfocysteine | A sulfated derivative of cysteine that is elevated in individuals with a molybdenum cofactor deficiency. (05 Mar 2000) |
|---|---|
| S-sulfocysteine synthase | <enzyme> Substrates are o-acetylserine and thiosulfate Registry number: EC 4.- Synonym: cysteine synthase b (26 Jun 1999) |
| S-T segment | That part of the electrocardiographic tracing immediately following the QRS complex and merging into the T wave. (05 Mar 2000) |
| s-triazine hydrolase | <enzyme> Dechlorinates deisopropylatrazine (ceat) and deethylatrazine (ciat); mw 54 kD; from rhodococcus corallinus; genbank l16534 Registry number: EC 3.8.1.- Synonym: trza gene product (26 Jun 1999) |
| s-type cholinesterase | <enzyme> An enzyme that breaks down acetylcholine tostop its action. (22 May 1997) |
| S-warfarin keto reductase | <enzyme> Rat liver microsome enzyme reduces s-warfarin to its 11s-oh product Registry number: EC 1.1.1.- Synonym: warfarin 11-reductase (26 Jun 1999) |
| S. marcescens minor metalloproteinase | <enzyme> Precursor protein consists of 352 amino acids, mw 38.479 kD from serratia marcescens; mature protein consists of 300 amino acids mw 32.515 kD with optimal activity at pH 8.0 and 50c; do not confuse with smp protein, a membrane protein from E coli Registry number: EC 3.4.24.- Synonym: smp proteinase (26 Jun 1999) |
| S1 nuclease mapping | A method for locating the 5' end of a transcript in a mixture of RNA. (05 Mar 2000) |
| S1-RNase | <enzyme> Isolated from petunia hybrida; 201 amino acid residues; amino acid sequence has been determined; genbank u07362 Registry number: EC 3.1.- Synonym: s(1) s-rnase (26 Jun 1999) |
| s3 gallop | <clinical sign> A finding which can be heard on auscultation of the heart in the setting of congestive heart failure. The sound of the S3 gallop, which immediately follows the second heart sound (S2) is thought to be produced by the sound of blood flowing into a noncompliant ventricle. This may occur in the setting of CHF and is best appreciated at the left ventricular apex. (17 Dec 1997) |
| s4 gallop | <clinical sign> A presystolic atrial sound that immediately precedes the first heart sound (S1). This finding on auscultation of the heart may indicate myocardial disease. It is also found in those with hypertension. (17 Dec 1997) |
| S6 kinase | <enzyme, molecular biology> Widely used abbreviation for phosphokinase, an enzyme catalysing transfer of phosphate from ATP to a second substrate usually specified in less abbreviated name, for example creatine phosphokinase (creatine kinase), protein kinase. Serine / threonine kinases phosphorylate on serine or threonine residues, tyrosine kinases on tyrosines. (18 Nov 1997) |
| S7 gallop | Gallop rhythm in which the gallop sound is due to superimposition of third and fourth heart sounds; sometimes heard in normal subjects with tachycardia, but usually indicative of myocardial disease. Synonym: S7 gallop, S7. Systolic gallop, obsolete term for a triple cadence to the heart sounds in which the extra sound occurs during systole, usually in the form of a systolic "click." (05 Mar 2000) |
| SA-induced protein kinase | <enzyme> 48-kD map kinase isolated from nicotiana tabacum; genbank u94192 Registry number: EC 2.7.10.- Synonym: p48 sip kinase, salicylic acid-induced protein kinase, sipk enzyme (26 Jun 1999) |
| saan | <ethnology> Same as Bushmen. Source: Websters Dictionary (01 Mar 1998) |