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Home >> Antibodies >> GCLC Antibody / Glutamate-cysteine ligase catalytic subunit

GCLC Antibody / Glutamate-cysteine ligase catalytic subunit (FY13385)

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Image FY13385 Adding 0.2 ml of distilled water will yield a concentration of 500 ug/ml 100 ug 439
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Immunofluorescent staining of GCLC using anti-GCLC antibody (red). GCLC was detected in a paraffin-embedded section of human liver cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 5 ug/ml rabbit anti-GCLC antibody overnight at 4oC. DyLight 594 Conjugated Goat Anti-Rabbit IgG was used as secondary antibody at 1:500 dilution and incubated for 30 minutes at 37oC. The section was counterstained with DAPI nuclear stain (blue). Visualize using a fluorescence microscope and filter sets appropriate for the label used.
Western blot analysis of GCLC using anti-GCLC antibody. Lane 1: human Hela whole cell lysates, Lane 2: human Jurkat whole cell lysates, Lane 3: human whole cell lysates, Lane 4: rat brain tissue lysates, Lane 5: rat C6 whole cell lysates, Lane 6: mouse brain tissue lysates. After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA for 50-90 minutes. Blocked the membrane with 5% non-fat milk/TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-GCLC antibody at 0.5 ug/ml overnight at 4oC, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal was developed using enhanced chemiluminescent. A strong ~73 kDa band corresponding to full-length GCLC was detected in all samples. Rodent liver and kidney additionally displayed ~70 kDa and ~65 kDa bands consistent with known N-terminally truncated GCLC forms, along with a ~40 kDa band corresponding to a documented proteolytic fragment frequently observed in high-protease tissues.
Immunohistochemical staining of GCLC using anti-GCLC antibody. GCLC was detected in a paraffin-embedded section of human colon cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 2 ug/ml rabbit anti-GCLC antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Immunohistochemical staining of GCLC using anti-GCLC antibody. GCLC was detected in a paraffin-embedded section of human liver cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 2 ug/ml rabbit anti-GCLC antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Immunohistochemical staining of GCLC using anti-GCLC antibody. GCLC was detected in a paraffin-embedded section of human liver cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 2 ug/ml rabbit anti-GCLC antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Flow Cytometry analysis of human A549 cells using anti-GCLC antibody. Overlay histogram showing cells stained with (Blue line). To facilitate intracellular staining, cells were fixed with 4% paraformaldehyde and permeabilized with permeabilization buffer. The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-GCLC antibody (1 ug/million cells) for 30 min at 20oC. DyLight 488 conjugated goat anti-rabbit IgG (5-10 ug/million cells) was used as secondary antibody for 30 minutes at 20oC. Isotype control antibody (Green line) was rabbit IgG (1 ug/million cells) used under the same conditions. Unlabelled sample (Red line) was also used as a control.
Flow Cytometry analysis of MCF-7 cells using anti-GCLC antibody. Overlay histogram showing MCF-7 cells stained with (Blue line). To facilitate intracellular staining, cells were fixed with 4% paraformaldehyde and permeabilized with permeabilization buffer. The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-GCLC antibody (1 ug/million cells) for 30 min at 20oC. DyLight 488 conjugated goat anti-rabbit IgG (5-10 ug/million cells) was used as secondary antibody for 30 minutes at 20oC. Isotype control antibody (Green line) was rabbit IgG (1 ug/million cells) used under the same conditions. Unlabelled sample (Red line) was also used as a control.
Immunohistochemical staining of GCLC using anti-GCLC antibody. GCLC was detected in a paraffin-embedded section of human colon cancer tissue. Heat mediated antigen retrieval was performed in EDTA buffer (pH 8.0, epitope retrieval solution). The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 2 ug/ml rabbit anti-GCLC antibody overnight at 4oC. Peroxidase Conjugated Goat Anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37oC. The tissue section was developed using an HRP secondary and DAB substrate.
Availability 1-2 days
Species Reactivity Human, Mouse, Rat
Format Lyophilized
Clonality Polyclonal (rabbit origin)
Isotype Rabbit IgG
Purity Immunogen affinity purified
Buffer Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.
UniProt P48506
Localization Nuclear, cytoplasmic
Applications ELISA : 0.1-0.5ug/ml
Flow Cytometry : 1-3ug/million cells
Immunofluorescence : 5ug/ml
Immunohistochemistry : 2-5ug/ml
Western Blot : 0.25-0.5ug/ml
Limitations This GCLC antibody is available for research use only.
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Description

GCLC antibody detects Glutamate-cysteine ligase catalytic subunit, a key enzyme encoded by the GCLC gene located on chromosome 6p12.1. GCLC catalyzes the first and rate-limiting step in glutathione (GSH) biosynthesis, forming gamma-glutamylcysteine from glutamate and cysteine. This enzyme plays an essential role in maintaining redox homeostasis, detoxifying reactive oxygen species (ROS), and protecting cells from oxidative stress. GCLC is expressed ubiquitously, with highest levels in liver, kidney, and lung, where glutathione metabolism is most active.

Structurally, GCLC is a 73 kDa cytosolic enzyme that functions as the catalytic component of the heterodimeric glutamate-cysteine ligase complex, together with the modifier subunit GCLM. It contains ATP-binding and substrate-recognition domains that mediate the ligation reaction. GCLC belongs to the ATP-dependent ligase family and serves as the principal control point in GSH biosynthesis. Co-localization studies show cytoplasmic distribution in metabolically active tissues, aligning with its antioxidant role.

Functionally, GCLC maintains cellular antioxidant defenses by providing the precursor for glutathione synthesis. Glutathione serves as a cofactor for numerous detoxification enzymes, including glutathione peroxidases and glutathione S-transferases. Through GSH production, GCLC supports redox regulation, protein thiol homeostasis, and protection against electrophilic stress. In immune cells, GCLC-derived glutathione regulates T-cell activation and macrophage inflammatory responses. Known substrates include L-glutamate, L-cysteine, and ATP.

Deficiency or dysregulation of GCLC results in decreased glutathione levels, leading to oxidative stress, hemolytic anemia, and liver dysfunction. Mutations in GCLC are associated with glutathione synthetase deficiency and neurological disorders linked to oxidative damage. Overexpression is observed in certain cancers, conferring chemoresistance through enhanced antioxidant capacity. Pathway associations include glutathione metabolism, oxidative stress response, and xenobiotic detoxification. During development, GCLC supports organogenesis by protecting proliferating cells from oxidative injury.

The GCLC antibody from NSJ Bioreagents is an excellent reagent for studies involving redox biology, detoxification mechanisms, and glutathione metabolism.

Application Notes

Optimal dilution of the GCLC antibody should be determined by the researcher.

Immunogen

E.coli-derived human GCLC recombinant protein (Position: R24-H388) was used as the immunogen for the GCLC antibody.

Storage

After reconstitution, the GCLC antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.

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