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Glutamine Synthetase Enzymes Molecular Depot
Glutamine Synthetase Enzymes Molecular Depot
Glutamine Synthetase Enzymes Molecular Depot
Glutamine Synthetase Enzymes Molecular Depot

Glutamine Synthetase

$1,167.00

    Catalog Number: B2020189 (1 kU)

    Glutamine synthetase is a key enzyme in nitrogen metabolism, catalyzing the synthesis of glutamine from glutamate and ammonia using ATP. It plays a vital role in detoxifying ammonia, producing glutamine for protein synthesis, and maintaining nitrogen balance in high turnover tissues. The enzyme is regulated by various factors, including allosteric effectors. This product has been used as a molecular tool for various biochemical applications. It has also been used in a wide array of other chemical and immunological applications. Custom bulk amounts of this product are available upon request.

    Products are for in vitro research use only (RUO).

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Glutamine Synthetase – Catalog Number: B2020189 (1 kU)

Catalog number: B2020189
Lot number: Batch Dependent
Expiration Date: Batch dependent
Amount: 1 kU
Molecular Weight or Concentration: 900 kDa
Supplied as: Lyophilized
Applications: a molecular tool for various biochemical applications
Storage: -20C
Keywords: GST, L-Glutamate : ammonia ligase (ADP-forming)
Grade: Biotechnology grade. All products are highly pure. All solutions are made with Type I ultrapure water (resistivity >18 MΩ-cm) and are filtered through 0.22 um.

 

Glutamine Synthetase (GS) is an essential enzyme in nitrogen metabolism, catalyzing the ATP-dependent synthesis of glutamine from glutamate and ammonia. This listing provides a defined 1 kU enzyme fill (Catalog B2020189) as a lyophilized preparation with a high molecular weight of 900 kDa, stored at −20 °C for long-term stability. Molecular Depot describes it as a molecular tool for various biochemical applications, and its precise documentation (catalog, amount, format, storage, keywords, grade) supports seamless SOP deployment and inventory tracking in collaborative laboratory environments.

Glutamine synthetase plays a dual role—detoxifying ammonia in tissues with high turnover and supplying glutamine for biosynthesis. Its oligomeric, high-mass structure makes it ideal for studying regulatory mechanisms, including allosteric effectors, post-translational modifications, and structural stability. Researchers leverage GS for enzymology assays, metabolic network modeling, and high-throughput screening of modulators or inhibitors.

To integrate effectively into workflows, researchers often reconstitute the lyophilized enzyme under cold conditions using consistent buffer volumes, then calibrate activity using pilot studies that vary substrate levels, pH, and effector concentrations. GS is frequently deployed in cellular studies of nitrogen balance, neurobiology research on ammonia clearance, and in biochemical assays assessing enzyme kinetics. Its documented attributes and purity standard enable reproducibility across analysts, platforms, and timepoints, making it a robust choice for high-fidelity nitrogen metabolism experimentation.

Why researchers choose this product:

  • High-unit specification (1 kU) supports quantitative enzyme activity assays
  • Oligomeric 900 kDa structure reflective of native GS for regulatory and structural studies
  • Lyophilized format allows precise aliquoting and long-term preservation
  • −20 °C storage supports cold-chain workflows for consistency
  • Biotechnology-grade purity ensures minimal contaminants for sensitive assays

This product is for Research Use Only (RUO). It is not intended for diagnostic or therapeutic use.

References

  • 1: Eelen G, Dubois C, Cantelmo AR, Goveia J, Brüning U, DeRan M, Jarugumilli G, van Rijssel J, Saladino G, Comitani F, Zecchin A, Rocha S, Chen R, Huang H, Vandekeere S, Kalucka J, Lange C, Morales-Rodriguez F, Cruys B, Treps L, Ramer L, Vinckier S, Brepoels K, Wyns S, Souffreau J, Schoonjans L, Lamers WH, Wu Y, Haustraete J, Hofkens J, Liekens S, Cubbon R, Ghesquière B, Dewerchin M, Gervasio FL, Li X, van Buul JD, Wu X, Carmeliet P. Role of glutamine synthetase in angiogenesis beyond glutamine synthesis Nature. 2018 Sep;561(7721):63-69.
  • 2: Eid T, Lee TW, Patrylo P, Zaveri HP. Astrocytes and Glutamine Synthetase in Epileptogenesis J Neurosci Res. 2019 Nov;97(11):1345-1362.
  • 3: Moreira E, Coimbra S, Melo P. Glutamine synthetase: an unlikely case of functional redundancy in Arabidopsis thaliana Plant Biol (Stuttg). 2022 Aug;24(5):713-720.
  • 4: Vitali T, Vanoni MA, Bellosta P. Quantitation of Glutamine Synthetase 1 Activity in Drosophila melanogaster Methods Mol Biol. 2023;2675:237-260.
  • 5: Wang S, Lin R, Tumukunde E, Zeng W, Bao Q, Wang S, Wang Y. Glutamine Synthetase Contributes to the Regulation of Growth, Conidiation, Sclerotia Development, and Resistance to Oxidative Stress in the Fungus Aspergillus flavus Toxins (Basel). 2022 Nov 23;14(12):822.
  • 6: Nguyen ED, Ding CC, Umetsu SE, Ferrell LD, Wen KW. Glutamine synthetase staining patterns in cirrhosis Hum Pathol. 2024 Nov;153:105655.
  • 7: Betti M, García-Calderón M, Pérez-Delgado CM, Credali A, Estivill G, Galván F, Vega JM, Márquez AJ. Glutamine synthetase in legumes: recent advances in enzyme structure and functional genomics Int J Mol Sci. 2012;13(7):7994-8024.
  • 8: Gebhardt R, Williams GM. Glutamine synthetase and hepatocarcinogenesis Carcinogenesis. 1995 Aug;16(8):1673-81.
  • 9: Cho SG, Song M, Chuon K, Shim JG, Meas S, Jung KH. Heliorhodopsin binds and regulates glutamine synthetase activity PLoS Biol. 2022 Oct 3;20(10):e3001817.
  • 10: Yücel B, Ada S. Leukemia Cells Resistant to Glutamine Deprivation Express Glutamine Synthetase Protein Turk J Haematol. 2022 Feb 23;39(1):22-28.

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Product Resources:

Copy of Technical Specifications

FeatureDetails
Viewing Head Siedentopf type trinocular head, inclined at 30°, Interpupillary adjustment 53mm to 75mm, graduated diopter on left eyetube (30mm I.D. eyetubes)
Eyepieces SWH10X Widefield high eyepoint eyepiece, Field No. 22, tube O.D. 30.0 mm
Nosepiece Quintuple
Quintuple LWD Planachromat Phase 10x, 20x
Condenser TC Condenser N.A. 0.30, W.D. 73.0mm
Stage180mm(X) x 245mm(Y) plain stage with replaceable glass insert with 45mm opening, Glass Stage plate insert
IlluminationKoehler without iris, with phase slider, 3W LED
WarrantyLIMITED LIFETIME WARRANTY

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