| UDPgalactosamine-galactose acetylgalactosaminyltransferase | <enzyme> Transfers sugars from udp-n-acetylgalactosamine to terminal galactose of h substance, producing a antigen; consider also fucosyl galactose alpha-n-acetylgalactosaminyltransferase which is called a-transferase Registry number: EC 2.4.1.- Synonym: blood group a-enzyme, blood group glycosyltransferase a, alpha-3-d-n-acetylgalactosaminyltransferase, alpha-3-n-acetyl-d-galactosaminyltransferase (26 Jun 1999) |
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| 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 hydrolase | <enzyme> Hydrolyzes udp-galactose to galactose Registry number: EC 3.1.4.- (26 Jun 1999) |
| UDP-galactose-lactosylceramide alpha 1-4-galactosyltransferase | <enzyme> Catalyses transfer of galactose from udp-galactose to lactosylceramide; exclusively an alpha1-4-galactosyltransferase Registry number: EC 2.4.1.- Synonym: udpgal-galactosyl-beta-1-4-glucosylceramide alpha1-4-galactosyltransferase, globotriaosylceramide synthase, udp-glcg-transferase, udp galactose lactosylceramide alpha-galactosyltransferase, udp-gal lcgtase, udp-gal-galactose alpha(1,4)-galactosyltransferase, alpha1,4galt (26 Jun 1999) |
| UDP-galactose-lactosylceramide beta 1-3-galactosyltransferase | <enzyme> Catalyses transfer of galactose from udp-galactose to lactose or lactosylceramide Registry number: EC 2.4.1.- Synonym: udp-galactose-lactose beta 1-3 galactosyltransferase, udp-galactose-lactose (lactosylceramide) beta-3-galactosyltransferase, udpgal-lac-3-transferase (26 Jun 1999) |
| UDP-galactose xylose galactosyltransferase | <enzyme> Involved in chondroitin sulfate synthesis Registry number: EC 2.4.1.- (26 Jun 1999) |
| UDP-GalNAc-beta-galactose beta 1,4-N-acetylgalactosaminyltransferase | <enzyme> Consider also EC 2.4.1.92 Registry number: EC 2.4.1.- Synonym: beta-1,4-n-acetylgalactosaminyltransferase, 4-galnactransferase, udp-n-acetylgalactosamine-beta-galactose beta 1,4-n-acetylgalactosaminyltransferase, (1-4)-n-acetyl-beta-d-galactosaminyltransferase, galnact-1 (26 Jun 1999) |
| UDP-N-acetylglucosamine-galactose(1-6)-N-acetylglucosaminyltransferase | <enzyme> Forms oligosaccharide core class 4(glcnac beta 1-3(glcnac beta 1-6)galnac) in mucins and various glycoproteins Registry number: EC 2.4.1.148 Synonym: udp-nagagf (26 Jun 1999) |
| uridine diphosphate galactose | <chemical> A nucleoside diphosphate sugar which can be epimerised into udpglucose for entry into the mainstream of carbohydrate metabolism. Serves as a source of galactose in the synthesis of lipopolysaccharides, cerebrosides, and lactose. Chemical name: Uridine 5'-(trihydrogen diphosphate), P'-alpha-D-galactopyranosyl ester (12 Dec 1998) |
| 2-amino-2-deoxy-D-galactose | <chemical> Chemical name: D-Galactose, 2-amino-2-deoxy- (12 Dec 1998) |
| fucosyl galactose alpha-n-acetylgalactosaminyltransferase | <enzyme> An enzyme that catalyses the transfer of acetylgalactosamine from udp n-acetylgalactosamine to various 2-fucosylgalactosides as acceptors. Chemical name: UDP-N-acetyl-D-galactosamine:alpha-L-fucosyl-(1,2)-D-galactose 3-N-acetyl-D-galactosaminyltransferase Registry number: EC 2.4.1.40 (12 Dec 1998) |
| androgen-binding proteins | Carrier proteins produced in the sertoli cells of the testis, secreted into the seminiferous tubules, and transported via the efferent ducts to the epididymis. Participate in the transport of androgens; include also synthetic androgens binding proteins. (12 Dec 1998) |
| antigen-binding site | <immunology> In immune network theory, an idiotope, an antigenic site of an antibody that is responsible for that antibody binding to an antigenic determinant (epitope). Also used of the site on a ligand molecule to which a cell surface receptor binds. (18 Nov 1997) |
| binding | <biochemistry, chemistry, molecular biology> The adherence of molecules to one another, for example, enzymes to substrates, antibodies to antigens, DNA strands to their complementary strands. Binding occurs because the shape and chemical natures of parts of the molecules surfaces are complementary. A common metaphor is the "lock-and-key," used to describe how enzymes fit around their substrate. (14 Nov 1997) |
| binding constant | <chemistry> Reciprocal of dissociation constant. A measure of the extent of a reversible association between two molecular species at equilibrium. (18 Nov 1997) |