| poly-beta-hydroxybutyrate | <biochemistry> A common storage material of prokaryotic cells consisting of a polymer of beta-hydroxybutyrate (PHB) or other beta-alkanoic acids (PHA). (09 Oct 1997) |
|---|---|
| poly-beta-hydroxybutyrate polymerase | <enzyme> 3rd enzyme of the poly-beta-hydroxybutyrate biosynthetic pathway in alcaligens eutrophus; acts via, an acyl s-enzyme intermediate Registry number: EC 2.3.1.- Synonym: phb polymerase, phb synthase, phac gene product, poly-beta-hydroxybutyrate synthetase (26 Jun 1999) |
| polyketide beta-ketoacylsynthase | <enzyme> A component of polyketide synthase complex; mapped by analogy with fatty acid synthetase complex. Registry number: EC 2.3.1.- Synonym: pks beta-ketoacyl synthase, acti gene product, actinorhodin polyketide synthase (26 Jun 1999) |
| polymerase beta | A class of mammalian DNA polymerases in the nucleus that do not have a role in replication but may function in DNA repair. Synonym: polymerase b. (05 Mar 2000) |
| PPM-1 beta-lactamase | <enzyme> From a cefuroxime-resistant strain of proteus mirabilis Registry number: EC 3.5.2.- Synonym: beta-lactamase fpm-1, fujisawa proteus mirabilis oxyiminocephalosporinase (26 Jun 1999) |
| 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) |
| 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) |
| 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) |