| glucan | One of a group of polysaccharide sugars composed of D-glucose monomers linked together by glycosidic bonds. Examples of glucans are dextran, laminarin, and lichenin. (09 Oct 1997) |
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| glucan 1,3-beta-glucosidase | <enzyme> Chemical name: exo-1,3-beta-glucanase Registry number: EC 3.2.1.58 Synonym: beta-(1-3)-glucanase, exoglucanase, 1,3-beta-glucanase, antiviral tobacco protein gp35, exo-1,3 beta-d-glucosidase, exg1 gene product, exoglucanase II, beta-1,3-glucanase (26 Jun 1999) |
| glucan 1,4-alpha-glucosidase | <enzyme> An enzyme that catalyses the hydrolysis of terminal 1,4-linked alpha-d-glucose residues successively from non-reducing ends of polysaccharide chains with the release of beta-glucose. It is also able to hydrolyze 1,6-alpha-glucosidic bonds when the next bond in sequence is 1,4. Chemical name: 1,4-alpha-D-Glucan glucohydrolase Registry number: EC 3.2.1.3 (12 Dec 1998) |
| glucan 1,4-alpha-maltohexaosidase | <enzyme> From klebsiella pneumoniae; hydrolyzes 1,4-alpha-d-glucosidic linkages in amylaceous polysaccharides so as to remove successive maltohexaose residues from the non-reducing ends Registry number: EC 3.2.1.98 Synonym: exo-maltohexao-hydrolase, extracellular maltohexaose-forming amylase, bacillus maltohexaose-forming amylase, g6-amylase (26 Jun 1999) |
| glucan 1,4-maltotetraohydrolase | <enzyme> Releases successive maltotetraose residues from the non-reducing chain ends of amylaceous polysaccharides Chemical name: 1,4-alpha-d-glucan maltotetraohydrolase Registry number: EC 3.2.1.60 Synonym: maltotetraose-forming amylase, maltotetraohydrolase, exo-maltotetraohydrolase (26 Jun 1999) |
| glucan 1,6-alpha-isomaltosidase | <enzyme> Hydrolyzes 1,6-alpha-d-glucosidic linkages in polysaccharides so as to remove successive isomaltose units from the non-reducing ends of the chains; from arthrobacter globiformis; mw 66 kD; genbank d30761 Registry number: EC 3.2.1.94 Synonym: isomalto-dextranase, 1,6-alpha-d-glucan isomaltohydrolase, imd gene product, exo-isomaltohydrolase (26 Jun 1999) |
| glucan endo-1,3-beta-d-glucosidase | <enzyme> An enzyme that hydrolyzes 1,3-beta-d-glucosidic linkages in 1,3-beta-d-glucans including laminarin, paramylon, and pachyman. Chemical name: 1,3-beta-D-Glucan glucanohydrolase Registry number: EC 3.2.1.39 (12 Dec 1998) |
| glucan synthase | <enzyme> Do not confuse with EC 2.4.1.34, which is 1,3-beta-glucan synthase or EC 2.4.1.12 which is 1,4-beta-glucan synthase Registry number: EC 2.4.1.- (26 Jun 1999) |
| glucan-1,4-glucosidase | <enzyme> An enzyme which removes the last 1,4-linked alpha-D- glucose residue from the nonreducing end of a long chain (or polymer) of such residues, making abeta-D-glucose molecule out of it in the process. (09 Oct 1997) |
| glucans | Glucose containing polysaccharides, including cellulose, callose, laminaran, starch and glycogen. (18 Nov 1997) |
| alpha-1,4-glucan lyase | <enzyme> Degrades alpha-1,4-glucan to produce 1,5-anhydrofructose; from seaweeds gracilariopsis lemaneiformis and gracilaria verrucosa; mw 111 kD; amino acid sequence has been determined Registry number: EC 4.2.2.- Synonym: alpha-1,4-glucan 4-lyase (26 Jun 1999) |
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| alpha-glucan branching glycosyltransferase | 1,4-alpha-d-glucan branching enzyme |
| alpha-glucan phosphorylase | <enzyme> Enzyme that catalyses the sequential removal of glycosyl residues from glycogen to yield one glucose-1-phosphate per reaction. Its activity is controlled by phosphorylation (by phosphorylase kinase). (21 Jun 2000) |
| 1,3-beta-glucan synthase | <enzyme> Amino acid sequence given in second source; genbank u09275 Registry number: EC 2.4.1.34 Synonym: chrysolaminarin synthase, udp glucuose beta(1--3)glucan-beta-3-glucosyltransferase, callose synthase, glucan synthase 1 gene product (26 Jun 1999) |
| 1,4-alpha-d-glucan 6-alpha-d-glucosyltransferase | A glucosyltransferase that transfers an alpha-glucosyl residue in a 1,4-alpha-glucan to the primary hydroxyl group of glucose in a 1,4-alpha-glucan. See: 1,4-alpha-d-glucan branching enzyme. Synonym: oligoglucan-branching glycosyltransferase. (05 Mar 2000) |
| 1,4-alpha-glucan 6-alpha-glucosyltransferase | <enzyme> From aspergillus niger and oryzae Registry number: EC 2.4.1.24 (26 Jun 1999) |
| 1,4-alpha-glucan branching enzyme | <enzyme> In glycogen or amylopectin synthesis, the enzyme that catalyses the transfer of a segment of a 1,4-alpha-glucan chain to a primary hydroxy group in a similar glucan chain. Chemical name: 1,4-alpha-D-Glucan:1,4-alpha-D-glucan 6-alpha-D-(1,4-alpha-D-glucano)-transferase Registry number: EC 2.4.1.18 (12 Dec 1998) |