| Field | Specification |
|---|---|
| Target | |
| Alternative names | Glutamine synthetase; GS; Glutamate--ammonia ligase; Palmitoyltransferase GLUL; GLUL; GLNS |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived human GLUL recombinant protein (Position: N74-N373). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody recognizes glutamine synthetase (gene GLUL) in human, mouse and rat samples and is validated for Western blot, IHC, ICC/IF, flow cytometry and ELISA. The predicted molecular weight is 42.1 kDa, and the supplier reports an observed band at about 42 kDa.
Glutamine synthetase (GLUL) uses ATP to join glutamate and ammonia into glutamine. In astrocytes it clears neurotoxic ammonia and recycles glutamate, while in pericentral hepatocytes it removes residual ammonia. It is widely used as a marker of astrocytes and liver zonation and is studied in nitrogen metabolism.
| Target | Glutamine synthetase (gene GLUL; UniProt P15104, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human, Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 42.1 kDa |
| Observed MW | 42 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Human, Mouse, Rat) |
|---|---|
| IHC (paraffin sections) | 2–5 µg/mL (Human, Mouse, Rat) |
| Immunocytochemistry / Immunofluorescence | 5 µg/mL (Human) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Human) |
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): human K562 cells, rat brain tissue, mouse brain tissue.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human appendiceal adenocarcinoma tissue, human gastric adenocarcinoma tissue, human liver cancer tissue, human lung cancer tissue, mouse colon tissue, rat colon tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Samples with confirmed staining (ICC/IF): A431 cells.
Samples with a confirmed signal (flow cytometry): THP-1 cells.
Immunogen
Recombinant human GLUL fragment (Asn74–Asn373), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with human, mouse and rat. UniProt places glutamine synthetase in the cytoplasm, microsome, mitochondrion and cell membrane. Tissue expression noted by UniProt (human): Expressed in endothelial cells. The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
Xiaoyu Chen et al. (2026) Bacillus amyloliquefaciens Fmb50 Alleviates Hyperglycemia by Reshaping Gut Structures and Mitigating Metabolic Disorders in Type 2 Diabetic Mice. Journal of Agricultural and Food Chemistry. 10.1021/acs.jafc.5c15573
