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| Size/SKU | Availability | Price |
|---|---|---|
25000 units | Available to ship TODAYfromMILWAUKEE | $97.00 |
125000 units | Available to ship TODAYfromMILWAUKEE | $410.00 |
500000 units | Available to ship TODAYfromMILWAUKEE | $810.00 |
About This Item
CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-864-1
MDL number:
Specific activity:
≥8.0 units/mg solid
form
solid
Quality Segment
specific activity
≥8.0 units/mg solid
contains
dextrin as extender
storage temp.
−20°C
General description
β-Galactosidase is a member of the glycoside hydrolase clan A (GH-A) family. It is widely present in microorganisms, which includes both prokaryotes and eukaryotes.[1]
Application
β-Galactosidase from Aspergillus oryzae has been used:
- in in vitro nuclear magnet resonance (NMR)[2]
- as a standard in the β-galactosidase assay to determine the concentration of cell-associated β-galactosidase[3]
- to modify sugar residues on the surface of the mutant slime cells to study the adhesive properties[4]
- for enzymatic hydrolysis of lactose[5]
- for reversed-phase (RP) adsorption
- in the hydrolysis of whey lactose
Biochem/physiol Actions
β-Galactosidase acts on the terminal β-D -galactosyl moieties of disaccharides, glycoconjugates, and polysaccharides. It is useful in mediating transglycosylation reactions such as the synthesis of galactooligosaccharides (GOS). β-Galactosidases might be used for glycobiological and biotechnological applications.[1]
β-galactosidase cleaves lactose into its monosaccharide components, glucose and galactose. It also catalyses the transglycosylation of glucose into allolactose, the inducer of β-galactosidase, in a feedback loop.[6]
Other Notes
One unit will hydrolyze 1.0 μmole of lactose per minute at pH at 4.5 at 30 °C.
1 of 1
This Item | |||
|---|---|---|---|
| description ≥8.0 units/mg solid | description Grade VIII, lyophilized powder, ≥500 units/mg protein | description ≥2600 units/g | description aqueous glycerol suspension, ≥500 units/mg protein (biuret) |
| specific activity ≥8.0 units/mg solid | specific activity ≥500 units/mg protein | specific activity ≥2600 units/g | specific activity ≥500 units/mg protein (biuret) |
| form solid | form lyophilized powder | form liquid | form aqueous glycerol suspension |
| storage temp. −20°C | storage temp. −20°C | storage temp. 2-8°C | storage temp. −20°C |
| Quality Level 200 | Quality Level 300 | Quality Level 200 | Quality Level 200 |
| contains dextrin as extender | contains - | contains - | contains - |
Storage Class
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
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