Key Product Details

Species Reactivity

Human

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG3 Kappa Clone # ARG1/1126

Format

IHC-Prediluted

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

View all Arginase 1/ARG1 Antibodies »

Product Specifications

Immunogen

Recombinant fragment (around aa11-97) of human Arginase 1/ARG1/liver Arginase protein(exact sequence is proprietary) (Uniprot: P05089)

Reactivity Notes

Others not known.

Localization

Cytoplasmic

Specificity

Recognizes a protein of 35-38kDa, which is identified as Arginase 1 (ARG1). Arginase is a manganese metallo-enzyme that catalyzes the hydrolysis of arginine to generate ornithine and urea. Arginase I and II are isoenzymes, which differ in subcellular localization, regulation, and possibly function. Arginase I is a cytosolic enzyme, which is expressed mainly in the liver as part of the urea cycle, whereas arginase II is a mitochondrial protein found in a variety of tissues. Antibody to ARG-1 labels hepatocytes in normal tissues and granulocytes in peripheral blood. ARG-1 is a sensitive and specific marker for identification of hepatocellular carcinoma.

Marker

Hepatocellular Carcinoma Marker

Clonality

Monoclonal

Host

Mouse

Isotype

IgG3 Kappa

Theoretical MW

36.5 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

The prediluted antibody does not require any mixing, dilution, reconstitution, or titration; the antibody is ready-to-use and optimized for staining.

Scientific Data Images for Arginase 1/ARG1/liver Arginase Antibody (ARG1/1126) - IHC-Prediluted

Immunohistochemistry-Paraffin: Arginase 1/ARG1/liver Arginase Antibody (ARG1/1126) - IHC-Prediluted [NBP2-48230]

Immunohistochemistry-Paraffin: Arginase 1/ARG1/liver Arginase Antibody (ARG1/1126) - IHC-Prediluted [NBP2-48230]

Immunohistochemistry-Paraffin: Arginase 1/ARG1/liver Arginase Antibody (ARG1/1126) - IHC-Prediluted [NBP2-48230] - Formalin-fixed, paraffin-embedded human Hepatocellular Carcinoma stained with ARG1-Monospecific Mouse Monoclonal Antibody (ARG1/1126).

Applications for Arginase 1/ARG1/liver Arginase Antibody (ARG1/1126) - IHC-Prediluted

Application
Recommended Usage

Immunohistochemistry

Optimal dilutions of this antibody should be experimentally determined.

Immunohistochemistry-Paraffin

Optimal dilutions of this antibody should be experimentally determined.
Application Notes
Immunohistochemistry (Formalin-fixed): 2-4ug/ml for 30 minutes at RT. Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95C followed by cooling at RT for 20 minutes.
Optimal dilution for a specific application should be determined.

Formulation, Preparation, and Storage

Purification

Protein A or G purified

Formulation

10 mM PBS with 0.05% BSA

Format

IHC-Prediluted

Preservative

0.05% Sodium Azide

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C.

Background: Arginase 1/ARG1

Arginase 1 (ARG1), also known as liver arginase, is a metalloenzyme that is a member of the ureohydrolase superfamily and arginase family (1). ARG1 is known for its role in the urea cycle in catalyzing the conversion of L-arginine into urea and L-ornithine (1). Arginase has two distinct isoforms, with ARG1 being expressed primarily in the liver and ARG2 in extrahepatic tissues (1). Human ARG1 is synthesized as 322 amino acids (aa) in length with a theoretical molecular weight of 35 kDa (1,2). Three ARG1 monomers can form a highly active homotrimer of 105 kDa (1). A key structural feature of the arginase protein is the binuclear magnesium (Mn2+) ions at its core (1).

Arginase and nitric oxidase synthase (NOS) compete for the same L-arginine substrate, creating a delicate balance between pathways (1). Furthermore, bioavailability of L-arginine and ARG1 expression has been implicated in several pathologies including vascular disease, neuronal disease, cardiovascular disease, immune dysfunction, inflammation, and cancer (1,3-5). For instance, ARG1 functions as a macrophage marker, defining the M2 population, while inducible nitric oxide synthase (iNOS) characterizes the M1 population; impaired M1/M2 polarization and changes in ARG1 expression is observed in diseases such as arteriogenesis, asthma, pulmonary fibrosis, and inflammatory bowel disease (1,3). In humans, arginase deficiency, known as argininemia, is an autosomal recessive metabolic disorder characterized by elevated ammonia (hyperammonemia) levels and arginine accumulation (6). Given that many arginase-associated diseases are characterized by upregulation in expression of ARG1, ARG2, or both, arginase inhibitors are currently being studied as a potential therapeutic approach (1,4).

References

1. S Clemente, G., van Waarde, A., F Antunes, I., Domling, A., & H Elsinga, P. (2020). Arginase as a Potential Biomarker of Disease Progression: A Molecular Imaging Perspective. International Journal of Molecular Sciences. https://doi.org/10.3390/ijms21155291

2. Uniprot (P05089)

3. Kieler, M., Hofmann, M., & Schabbauer, G. (2021). More than just protein building blocks: How amino acids and related metabolic pathways fuel macrophage polarization. The FEBS Journal. Advance online publication. https://doi.org/10.1111/febs.15715

4. Shosha, E., Fouda, A. Y., Narayanan, S. P., Caldwell, R. W., & Caldwell, R. B. (2020). Is the Arginase Pathway a Novel Therapeutic Avenue for Diabetic Retinopathy?. Journal of Clinical Medicine. https://doi.org/10.3390/jcm9020425

5. Correale J. (2021). Immunosuppressive Amino-Acid Catabolizing Enzymes in Multiple Sclerosis. Frontiers in Immunology. https://doi.org/10.3389/fimmu.2020.600428

6. Morales, J. A., & Sticco, K. L. (2020). Arginase Deficiency. In StatPearls. StatPearls Publishing.

Long Name

Liver-Type Arginase

Alternate Names

AI, ARG1, Arginase-1, Liver Arginase, PGIF, Type I Arginase

Gene Symbol

ARG1

Additional Arginase 1/ARG1 Products

Product Documents for Arginase 1/ARG1/liver Arginase Antibody (ARG1/1126) - IHC-Prediluted

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

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Product Specific Notices for Arginase 1/ARG1/liver Arginase Antibody (ARG1/1126) - IHC-Prediluted

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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