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β-Galactosidase (GAL), CAS No.9031-11-2
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GRADE & PURITY Derived from Grade VI Escherichia coli, Lyophilized Powder, ≥ 250 units/mg protein
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Why this grade
Derived from Grade VI Escherichia coli, Lyophilized Powder, ≥ 250 units/mg protein for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Storage & shipping
Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.
Quality documents
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Literature proof
Cited in 3 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Overview
β-Galactosidase is a tetramer consisting of four equal subunits of 135,000 Da each. It is a sulfhydryl containing enzyme, with 19 cysteine residues per subunit.
Application:
β-Galactosidase is conjugated to an antibody that specifically recognizes a target molecule (enzyme immunoassay or EIA). β-Galactosidase is also used as a reporter enzyme to monitor the level of gene expression of a promoter.
Specifications
Product Name
β-Galactosidase (GAL), CAS No.9031-11-2
Specifications & Purity
Derived from Grade VI Escherichia coli, Lyophilized Powder, ≥ 250 units/mg protein
Biochemical and Physiological Mechanisms
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.β-galactosidase cleaves lactose into its mo
CAS
9031-11-2
Enzyme Commission Number
3.2.1.23(BRENDA, IUBMB)
Molecule Type
Small molecule
Product Properties
| Nacres | NA.54 |
|---|
Storage and Shipping
Concentration
Derived from Grade VI Escherichia coli, Lyophilized Powder, ≥ 250 units/mg protein
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
Documentation
📋 Safety Data Sheet (SDS)
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →✅ Certificate of Analysis (COA)
Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →🔬 Specification Sheet
Full quality attributes and acceptance criteria for this grade.
View spec sheet →Advanced Data
Certificates（CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:
Documents & Articles
Citations of This Product
References
| 1. Wang Jiawei, Du Yi, Du Jianxiu. (2022) Green-emission nitrogen-doped carbon quantum dots from alkaline N-methyl-2-pyrrolidinone for determination of β-galactosidase and its inhibitors. MICROCHIMICA ACTA, 189 (8): (1-10). [PMID:35840722] [10.1007/s00604-022-05378-3] |
| 2. Chen Zhang, Ziyang He, Jinjin Liu, Yufei Zhang, Marco Marcucci, Yihuan Li, Zexin Lin. (2025) Improving Spirulina protein purification by addressing polysaccharides and alcohol-soluble components interference in ultrafiltration. Future Foods, [PMID:] [10.1016/j.fufo.2025.100581] |
| 3. Yongming Wang, Yangcan Ming, Zhichao Yu, Zhenjin Xu, Minglang Zou, Cuiping Chen, Fang Luo, Da Huang, Na Wang, Zhenyu Lin, Zuquan Weng. (2025) ROS-Responsive Cationic Polymers with Intrinsic Anti-Inflammatory Activity for Intracellular Protein Delivery. BIOMACROMOLECULES, [PMID:40114391] [10.1021/acs.biomac.4c01593] |
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