| cyanocobalamin beta-ligand transferase | <enzyme> Cytosolic enzyme utilizing fad, NADPH and reduced glutathione; forms glutathionylcobalamin from cyanocobalamin Registry number: EC 2.5.1.- Synonym: ccbl transferase (26 Jun 1999) |
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| pregnancy-associated beta-plasma protein | A beta-globulin now believed to be a pregnancy-specific protein. Its plasma levels increase steadily during pregnancy until the end of gestation. (12 Dec 1998) |
| pregnancy-specific beta 1-glycoprotein | A glycoprotein with the electrophoretic mobility of a beta-1 globulin. It is produced by the placental trophoblast and secreted into the maternal bloodstream during pregnancy. It can be detected 18 days after ovulation and its concentration in plasma rises steadily until, at the end of gestation, it reaches 200 mg/ml. It has been proposed as a measure of placental function for fertility control and is a candidate for an early pregnancy test. (12 Dec 1998) |
| cystathionine beta-lyase | <enzyme> An enzyme catalyzing the hydrolysis of l-cystathionine to pyruvate, l-homocysteine, and NH3. See: cystathionine gamma-lyase. Synonym: beta-cystathionase, cystine lyase. (05 Mar 2000) |
| cystathionine beta-synthase | <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) |
| progesterone 5 beta-reductase | <enzyme> A stereospecific enzyme; forms 5 beta-pregnane-3,20-dione from progesterone; see also progesterone 5 alpha-reductase Registry number: EC 1.3.1.- (26 Jun 1999) |
| proline-beta-naphthylamidase | <enzyme> From pig intestinal mucosa; hydrolyzes proline-beta-naphthylamidase; distinct from proline aminopeptidase; inhibited by active site serine-specific protease inhibitors Registry number: EC 3.4.11.- Synonym: pro-naphthylamidase (26 Jun 1999) |
| xyloglucan 4-beta-D-glucosyltransferase | <enzyme> Catalyses formation of xyloglucan from udp-glucose Registry number: EC 2.4.1.- Synonym: xylo-glctransferase, xyloglucan glucosyltransferase (26 Jun 1999) |
| xyloglucan endo(1-4)-beta-D-glucanase | <enzyme> Hydrolyzes only xyloglucans Registry number: EC 3.2.1.- Synonym: xyloglucanase (26 Jun 1999) |
| xylosylprotein 4-beta-galactosyltransferase | <enzyme> Catalyses the second glycosyl transfer reaction in the assembly of the dermatan sulfate chain Registry number: EC 2.4.1.133 Synonym: galactosyltransferase i (26 Jun 1999) |
| short-chain beta-hydroxyacyl-CoA dehydrase | <enzyme> Forms trans-2-enoyl-CoA; maximal activity with trans-2-hexenoyl-CoA, followed by crotonyl-CoA; not the same as EC 4.2.1.17 Registry number: EC 4.2.1.- Synonym: beta-hydroxybutyryl-CoA dehydrase, short-chain beta-hydroxyacyl-coenzyme a dehydrase (26 Jun 1999) |
| hyper-beta-alaninaemia | Elevated levels of beta-alanine in the serum; believed to be due to a deficiency of beta-alanine:pyruvate aminotransferase; leads to impaired CNS function. (05 Mar 2000) |
| hyper-beta-aminoisobutyric aciduria | Elevated levels of beta-aminoisobutyric acid in the urine; believed to be due to a deficiency of liver R-beta-aminoisobutyrate:pyruvate aminotransferase. (05 Mar 2000) |
| N6-acetyl-beta-lysine transaminase | <enzyme> Involved in oxidative catabolism of lysine by candida maltosa; forms 2-keto-6-acetamidocaproate Registry number: EC 2.6.1.65 Synonym: n6-acetyllysine transaminase, acl-at, n6-acetyllysine 2-oxoglutarate aminotransferase (26 Jun 1999) |
| N-acetylglucosamine 4-beta-galactosyltransferase | <enzyme> From schistosoma mansoni Registry number: EC 2.4.1.- Synonym: glcnac-4-galactosyltransferase (26 Jun 1999) |