β-Galactosidase from Escherichia coli lyophilized powder, ≥500 units/mg protein Sigma G3153
По запросу
Наличие: Срок поставки 60 дней
- Производитель: Sigma
- Каталожный номер:
G3153 - CAS номер : 9031-11-2
Packaging
Package size based on protein content
Unit Definition
One unit will hydrolyze 1.0 μmole of o-nitrophenyl β-
Physical form
Stabilized with phosphate buffer and sucrose
Application
β-Galactosidase may be used for derivatization, such as an enzyme label for IgG, without prior dialysis or gel filtration.1
Biochem/physiol Actions
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.2
Physical properties
Tetramer molecular weight 465 kDa (subunits 116.3 kDa each)
Характеристики реактива | |
storage temp. | −20°C |