Merck β-Galactosidase

β-Galactosidase

from E. coli overproducer

β-galactosidase

Quality Level

100

form

suspension

specific activity

~300 units/mg protein (At 37 °C with 2-nitrophenyl-β-D-galactoside as the substrate, approximately 30 U/mg at 25 °C with lactose as the substrate; standardized with BSA.)

분자량

540 kDa

포장

pkg of 1,500 U

manufacturer/tradename

Roche

최적 pH

7

배송 상태

wet ice

저장 온도

2-8°C

β-Galactosidase or β-D-Galactoside galactohydrolase is basically a tetramer made up of identical four polypeptide chains, each constituting 1023 amino acids. It is very specific for D-galactose and requires K+ or Na+ and Mg2+ to be fully active. β-Galactosidase enzyme with an oxygen glycosidic bond catalyzes reactions with β-d-galactopyranosides.