EC |
3.2.1.40 |
Accepted name: |
α-L-rhamnosidase |
Reaction: |
Hydrolysis of terminal non-reducing α-L-rhamnose residues in α-L-rhamnosides |
Other name(s): |
α-L-rhamnosidase T; α-L-rhamnosidase N |
Systematic name: |
α-L-rhamnoside rhamnohydrolase |
Comments: |
The enzyme, found in animal tissues, plants, yeasts, fungi and bacteria, utilizes an inverting mechanism of hydrolysis, releasing β-L-rhamnose. Substrates include naringin, rutin, quercitrin, hesperidin, dioscin, terpenyl glycosides and many other natural glycosides containing terminal α-L-rhamnose. |
Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 37288-35-0 |
References: |
1. |
Rosenfeld, E. and Wiederschein, G. The metabolism of L-rhamnose in animal tissues. Bull. Soc. Chim. Biol. 47 (1965) 1433–1440. [PMID: 5855461] |
2. |
Kurosawa, Y., Ikeda, K. and Egami, F. α-L-rhamnosidases of the liver of Turbo cornutus and Aspergillus niger. J. Biochem. 73 (1973) 31–37. [PMID: 4632197] |
3. |
Zverlov, V.V., Hertel, C., Bronnenmeier, K., Hroch, A., Kellermann, J. and Schwarz, W.H. The thermostable α-L-rhamnosidase RamA of Clostridium stercorarium: biochemical characterization and primary structure of a bacterial α-L-rhamnoside hydrolase, a new type of inverting glycoside hydrolase. Mol. Microbiol. 35 (2000) 173–179. [DOI] [PMID: 10632887] |
4. |
Yanai, T. and Sato, M. Purification and characterization of an α-L-rhamnosidase from Pichia angusta X349. Biosci. Biotechnol. Biochem. 64 (2000) 2179–2185. [DOI] [PMID: 11129592] |
5. |
Cui, Z., Maruyama, Y., Mikami, B., Hashimoto, W. and Murata, K. Crystal structure of glycoside hydrolase family 78 α-L-Rhamnosidase from Bacillus sp. GL1. J. Mol. Biol. 374 (2007) 384–398. [DOI] [PMID: 17936784] |
6. |
Rabausch, U., Ilmberger, N. and Streit, W.R. The metagenome-derived enzyme RhaB opens a new subclass of bacterial B type α-L-rhamnosidases. J. Biotechnol. 191 (2014) 38–45. [DOI] [PMID: 24815685] |
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[EC 3.2.1.40 created 1972] |
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EC |
3.2.1.168 |
Accepted name: |
hesperidin 6-O-α-L-rhamnosyl-β-D-glucosidase |
Reaction: |
hesperidin + H2O = hesperetin + rutinose |
Glossary: |
hesperetin = 5,7,3′-trihydroxy-4′-methoxyflavanone
hesperidin = hesperetin 7-(6-O-α-L-rhamnopyranosyl-β-D-glucopyranoside)
rutinose = 6-O-α-L-rhamnopyranosyl-D-glucose |
Other name(s): |
AnRut; rutinosidase |
Systematic name: |
hesperetin 7-(6-O-α-L-rhamnopyranosyl-β-D-glucopyranoside) 6-O-α-rhamnopyranosyl-β-glucohydrolase |
Comments: |
The enzyme exhibits high specificity towards 7-O-linked flavonoid β-rutinosides. |
Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc |
References: |
1. |
Mazzaferro, L., Piñuel, L., Minig, M. and Breccia, J.D. Extracellular monoenzyme deglycosylation system of 7-O-linked flavonoid β-rutinosides and its disaccharide transglycosylation activity from Stilbella fimetaria. Arch. Microbiol. 192 (2010) 383–393. [DOI] [PMID: 20358178] |
2. |
Mazzaferro, L., Piñuel, L., Minig, M. and Breccia, J.D. Erratum to: Extracellular monoenzyme deglycosylation system of 7-O-linked flavonoid β-rutinosides and its disaccharide transglycosylation activity from Stilbella fimetaria. Arch. Microbiol. 193 (2011) 461. |
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[EC 3.2.1.168 created 2011] |
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