1,4-α-d-glucan-branching enzyme


1,4-α-d-glucan-branching enzyme
Amylo-(1,4→1,6)-transglucosylase or transglucosidase; an enzyme in muscle and in plants (Q enzyme) that cleaves α-1,4 linkages in glycogen or starch, transferring the fragments into α-1,6 linkages, creating branches in the polysaccharide molecules; in plants, it converts amylose to amylopectin; this enzyme is deficient in individuals with glycogen storage disease type IV. SYN: α-glucan-branching glycosyltransferase, amylo-1,4:1,6-glucantransferase, amylo-(1,4→1,6)-transglucosidase, amylo-(1,4→1,6)-transglucosylase, branching enzyme.

Medical dictionary. 2011.

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  • 14-α-glucan branching enzyme — 1,4 α glu·can branch·ing en·zyme (glooґkan branchґing enґzīm) [EC 2.4.1.18] an enzyme of the transferase class that catalyzes the cleavage of internal α 1,4 glucoside linkages in glycogen (or, in plants, amylopectin) and transfer… …   Medical dictionary

  • branching enzyme — branch·ing en·zyme (branchґing enґzīm) 1,4 α glucan branching enzyme …   Medical dictionary

  • Glycogen branching enzyme — protein Name=1,4 alpha glucan branching enzyme caption= width= HGNCid=4180 Symbol=GBE1 AltSymbols= EntrezGene=2632 OMIM=607839 RefSeq=NM 000158 UniProt=Q04446 PDB= ECnumber=2.4.1.18 Chromosome=3 Arm=p Band=12 LocusSupplementaryData=A glycogen… …   Wikipedia

  • α-glucan-branching glycosyltransferase — SYN: 1,4 α d glucan branching enzyme …   Medical dictionary

  • glucan transferase — glu·can trans·fer·ase (glooґkan transґfər ās) an enzyme transferring glucosyl chains in glucans from one site to another, usually with specific conformations of donor and acceptor sites; see oligo 1,4, 1,4 glucantransferase and 1,4… …   Medical dictionary

  • Enzyme — A protein (or protein based molecule) that speeds up a chemical reaction in a living organism. An enzyme acts as catalyst for specific chemical reactions, convertingt a specific set of reactants (called substrates) into specific products. Without …   Medical dictionary

  • brancher enzyme — branching enzyme 1,4 α glucan branching enzyme …   Medical dictionary

  • 1,4-α-d-glucan 6-α-d-glucosyltransferase — A glucosyltransferase that transfers an α glucosyl residue in a 1,4 α glucan to the primary hydroxyl group of glucose in a 1,4 α glucan. SEE ALSO: 1,4 α d glucan branching enzyme. SYN: oligoglucan branching glycosyltransferase …   Medical dictionary

  • brancher enzyme — branch·er en·zyme (branchґər enґzīm) 1,4 α glucan branching enzyme …   Medical dictionary

  • 1,4-a-glucan 6-a-glucosyltransferase — In enzymology, a 1,4 alpha glucan 6 alpha glucosyltransferase (EC number|2.4.1.24) is an enzyme that catalyzes the chemical reaction that transfers an alpha D glucosyl residue in a 1,4 alpha D glucan to the primary hydroxyl group of glucose or… …   Wikipedia