| XL | excess lactate; X-linked [inheritance]; xylose-lysine [agar base] |
|---|---|
| XLD | xylose-lysine-deoxycholate [agar] |
| Xyl | xylose |
| CSCI | corticosterone side-chain isomerase |
| DSI | deep shock insulin; Depression Status Inventory; disulfide isomerase; Down Syndrome International |
| XYL | D-xylose |
|---|---|
| XR | Xylose reductase |
| 3 beta-HSD | 3 beta-Hydroxysteroid dehydrogenase/isomerase |
| 3 beta-HSD | 3 beta-Hydroxysteroid dehydrogenasel delta 5-->4-isomerase |
| 3 beta-HSD | 3 beta-hydroxy-steroid dehydrogenase/delta 5-delta 4 isomerase |
| xylose isomerase | <enzyme> Note that xyla has been used to refer to both xylose isomerase and xylanase a Registry number: EC 5.3.1.5 Synonym: glucose isomerase, d-acidic-ketolysoisomerase (26 Jun 1999) |
|---|
| xylose | <biochemistry> Monosaccharide pentose that is found in xylans, very abundant components of hemicelluloses. (18 Nov 1997) |
|---|---|
| xylose test | A laboratory aid in diagnosing alimentary or essential pentosuria, conditions in which xylose (a pentose) is excreted; the xylose may be identified by rapid reduction of Benedict's solution, by nonfermentation by yeasts, or by a positive Bial's test for pentose. (05 Mar 2000) |
| xylose tolerance test | <investigation> This test measures the intestine's ability to absorb the simple sugar, D-xylose. This is an indicator for whether or not nutrients are being absorbed properly in the intestine. This test is often used to evaluate persistent diarrhoea, weight loss, malnutrition and cases of suspected malabsorption. Abnormal results may be seen in the following conditions: Crohn's disease, Giardiasis, hookworm infestation, radiation enteritis, celiac sprue, viral gastroenteritis and Whipple's disease. (27 Sep 1997) |
| d-xylose absorption | This test measures the intestine's ability to absorb the simple sugar, D-xylose. This is an indicator for whether or not nutrients are being absorbed properly in the intestine. This test is often used to evaluate persistent diarrhoea, weight loss, malnutrition and cases of suspected malabsorption. Abnormal results may be seen in the following conditions: Crohn's disease, Giardiasis, hookworm infestation, radiation enteritis, celiac sprue, viral gastroenteritis and Whipple's disease. (27 Sep 1997) |
| UDP-D-xylose-beta-D-glucoside alpha-1,3-xylosyltransferase | <enzyme> Catalyses transfer of xylose from udp-d-xylose to glucose Registry number: EC 2.4.2.- Synonym: udp-xyl-glc axt, beta-glucoside alpha-1,3-xylosyltransferase (26 Jun 1999) |
| UDP-D-xylose-xyloside alpha-1,3-xylosyltransferase | <enzyme> Catalyses transfer of xylose from udp-d-xylose to position 3 of xyl-1-3-glc-r' Registry number: EC 2.4.2.- Synonym: udp-xyl-xyl axt (26 Jun 1999) |
| UDP-galactose 4-O-beta-D-galactosyl-D-xylose galactosyltransferase | <enzyme> Involved in chondroitin sulfate synthesis Registry number: EC 2.4.1.- (26 Jun 1999) |
| UDP-galactose xylose galactosyltransferase | <enzyme> Involved in chondroitin sulfate synthesis Registry number: EC 2.4.1.- (26 Jun 1999) |
| uridine diphosphate xylose | <chemical> The decarboxylation product of udpglucuronic acid, which is used for formation of the xylosides of seryl hydroxyl groups in mucoprotein synthesis. Also forms plant xylans. Chemical name: Uridine 5'-(trihydrogen diphosphate), P'-alpha-D-xylopyranosyl ester (12 Dec 1998) |
| acetylene-allene thioester isomerase | <enzyme> Converts 3-acetylenic fatty acyl thioesters to 2,3-dienoyl fatty acyl thioesters Registry number: EC 5.3.99.- (26 Jun 1999) |
| arabinose-5-phosphate isomerase | <enzyme> Catalyses reversibly the conversion of arabinose phosphate to ribulosephosphate Registry number: EC 5.3.1.13 Synonym: arabinose 5-phosphate ketolisomerase, arabinosephosphate isomerase (26 Jun 1999) |
| galactose-6-phosphate isomerase | <enzyme> Converts galactose 6-phosphate to tagatose 6-phosphate Registry number: EC 5.3.1.- Synonym: galactose 6-phosphate isomerase, gal-6-p isomerase, tagatose-6-phosphate isomerase (26 Jun 1999) |
| maleate isomerase | <enzyme> Converts maleate to fumarate; amino acid sequence sourced from from alcaligenes faecalis. Registry number: EC 5.2.1.1 Synonym: maleate cis-trans-isomerase (26 Jun 1999) |
| maleylpyruvate isomerase | <enzyme> Catalyses isomerization of 3-maleylpyruvate to 3-fumarylpyruvate Registry number: EC 5.2.1.4 (26 Jun 1999) |
| mannose-6-phosphate isomerase | <enzyme> An enzyme that catalyses the reversible isomerization of d-mannose-6-phosphate to form d-fructose-6-phosphate, an important step in glycolysis. Chemical name: D-Mannose-6-phosphate ketol isomerase Registry number: EC 5.3.1.8 (12 Dec 1998) |
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