Enzyme found in lac+ bacterial cells that catalyzes the cleavage of -linked terminal galactose-containing substrates.
- Lyophilized powder
- Source: E. coli
- Conjugation grade
- Activity (37°C):800-1000U/mg protein
- Unit definition: One unit will hydrolyze 1.0 μmole of o-nitrophenyl β-D-galactoside to o-nitrophenol and D-galactose per min at pH 7.3 at 37°C, 410nm
- Aggregation (HPLC): <3.0%
- Application: Used as an indicator enzyme conjugated to proteins such as antibodies