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Literature summary for 3.2.1.40 extracted from

  • Orrillo, A.G.; Ledesma, P.; Delgado, O.D.; Spagna, G.; Breccia, J.D.
    Cold-active alpha -L-rhamnosidase from psychrotolerant bacteria isolated from a sub-Antarctic ecosystem (2007), Enzyme Microb. Technol., 40, 236-241.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
ethanol presence of 12% ethanol reveals a decreased activity of 48% Pseudoalteromonas sp.

Localization

Localization Comment Organism GeneOntology No. Textmining
intracellular
-
Ralstonia pickettii 5622
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intracellular
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Pseudoalteromonas sp. 5622
-

Organism

Organism UniProt Comment Textmining
Pseudoalteromonas sp.
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isolate 005NJ
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Ralstonia pickettii
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isolate 009RG
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Source Tissue

Source Tissue Comment Organism Textmining
culture fluid
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Ralstonia pickettii
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culture fluid different carbon sources tested Pseudoalteromonas sp.
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
activity analyzed at 4°C and 7°C, 100% activity arbitrarily established as the activity shown at 35°C, corresponds to 151 U/ml in Ralstonia pickettii, activity about 5% at 4°C and about 15% at 7°C determined Ralstonia pickettii
additional information
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the isolate 005NJ retains 19% alpha-L-rhamnosidase activity at 7°C and 6% activity at 4°C, relative activity depends on carbon source, maximal specific activity obtained at concentrations of 0.5% (w/v) for L-rhamnose (967 U/mg) and apple pectin (382 U/mg) Pseudoalteromonas sp.

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
p-nitrophenol-alpha-L-rhamnopyranoside + H2O assay reaction system to determine enzyme activity in psychrophile bacteria Ralstonia pickettii p-nitrophenol + alpha-L-rhamnopyranose
-
?
p-nitrophenol-alpha-L-rhamnopyranoside + H2O assay reaction system to determine enzyme activity in psychrophile bacteria, at 25°C and at 5°C Pseudoalteromonas sp. p-nitrophenol + alpha-L-rhamnopyranose
-
?

Synonyms

Synonyms Comment Organism
alpha-L-rhamnosidase
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Ralstonia pickettii
alpha-L-rhamnosidase
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Pseudoalteromonas sp.

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
40
-
estimated by activity assay, 6% activity retained at 4°C, half-life of 4 min at 50°C indicates thermo-sensitivity Pseudoalteromonas sp.

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
4 40 activity measured, 6% activity maintained at 4°C, thermo-inactivation above 50°C Pseudoalteromonas sp.

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
estimated by activity assay Pseudoalteromonas sp.