β-glucosidase
| Β-glucosidase | ||
|---|---|---|
|
||
| according to PDB 3AHX | ||
| other names |
Cellobiase, gentiobiase, emulsin, elaterase, aryl-beta-glucosidase, beta-D-glucosidase, beta-glucoside glucohydrolase, beta-1,6-glucosidase, arbutinase, amygdalase, amygdalinase, p-nitrophenyl beta-glucosidase, primeverosidase, Salicilinase |
|
| Mass / length primary structure | 51,565 Da / 445 AS | |
| Identifier | ||
| Gene name (s) | bglA | |
| External IDs |
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|
| Enzyme classification | ||
| EC, category | 3.2.1.21 , hydrolase | |
| Occurrence | ||
| Parent taxon | Bacteria | |
β-glucosidases are a group of enzymes belonging to the glycosidase class .
properties
β-glucosidases hydrolyze molecules with glucose in a β- glycosidic bond . β-glucosidases have numerous functions in various organisms, including the breakdown of glycolipids and exogenous glycosides in animals, lignification / cell wall lignification, breakdown of cell wall oligosaccharides , phytohormone conjugate activation, release of aromatic compounds in plants and conversion of biomass in microorganisms. They occur in all areas of living organisms and there hydrolyze non-reducing terminal β- D -glucose residues of saccharides from the group of β- D -glucans and glycosides . In microorganisms they occur in particle form within cellusomes and enable cellobiose to be broken down into glucose. In the food industry , enzyme preparations containing β-glucosidase are used to obtain flavorings .
In 1837 Justus Liebig and Friedrich Wöhler isolated a substance from bitter almonds that splits the amygdalin of bitter almonds into sugar, bitter almond oil (benzaldehyde) and hydrogen cyanide. They called the substance emulsin .
literature
- Marvin J. Ferner: Investigations and characterization of selected β-glucosidase varieties with the aim of improving the wine aroma. Master's thesis at the Hamburg University of Applied Sciences from August 23, 2012 ( edoc.sub.uni-hamburg.de PDF; 2.2 MB).
Individual evidence
- ↑ Enzyme - 3.2.1.21 in the Kyoto Encyclopedia of Genes and Genomes
- ↑ UniProt Q53EH2
- ↑ Marvin J. Furthermore: Investigations and characterization of selected β-glucosidase varieties with the aim of improving the wine aroma. Master's thesis at the Hamburg University of Applied Sciences from August 23, 2012 ( edoc.sub.uni-hamburg.de PDF; 2.2 MB).
- ^ Hans-Dieter Belitz , Werner Grosch , Peter Schieberle : Textbook of food chemistry . 6th completely revised edition. Springer, Berlin / Heidelberg 2008, ISBN 978-3-540-73201-3 , p. 340-341 , doi : 10.1007 / 978-3-540-73202-0 .
- ↑ glucosidases. In: Römpp Encyclopedia Online . Thieme Verlag Stuttgart 2007.
- ^ Otto Westphal , Theodor Wieland , Heinrich Huebschmann: life regulator. Of hormones, vitamins, ferments and other active ingredients. Societäts-Verlag, Frankfurt am Main 1941 (= Frankfurter Bücher. Research and Life. Volume 1), p. 59.