Human Arginase 1/ARG1 APC-conjugated Antibody

Catalog # Availability Size / Price Qty
Detection of Arginase 1/ARG1 in HepG2 Human Cell Line by Flow Cytometry.
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Human Arginase 1/ARG1 APC-conjugated Antibody Summary

Species Reactivity
Detects human Arginase 1/ARG1 in ELISAs.
Monoclonal Mouse IgG2B Clone # 658922
Protein A or G purified from hybridoma culture supernatant
E. coli-derived recombinant human Arginase 1/ARG1
Accession # P05089
Supplied in a saline solution containing BSA and Sodium Azide.
Allophycocyanin (Excitation= 620-650 nm, Emission= 660-670 nm)


Recommended Concentration
Intracellular Staining by Flow Cytometry
10 µL/106 cells
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Example

Intracellular Staining by Flow Cytometry Detection of Arginase 1/ARG1 in HepG2 Human Cell Line by Flow Cytometry. View Larger

Detection of Arginase 1/ARG1 in HepG2 Human Cell Line by Flow Cytometry. HepG2 human hepatocellular carcinoma cell line was stained with Mouse Anti-Human Arginase 1/ARG1 APC-conjugated Mono-clonal Antibody (Catalog # IC8026A, filled histogram) or isotype control antibody (Catalog # IC0041A, open histogram). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # FC005). View our protocol for Staining Intracellular Molecules.

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Preparation and Storage

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: Arginase 1/ARG1

Arginase 1 (ARG1) is a 35-40 kDa member of the arginase family of enzymes. It is expressed in multiple cell types, including erythrocytes, hepatocytes, neutrophils, smooth muscle and macrophages. ARG1 demonstrates two distinct functions: in the hepatocyte cytoplasm, it catalyzes the conversion of arginine to ornithine and urea, while in multiple cells, it degrades arginine, thus indirectly downregulating NO synthase (NOS) activity by depriving this enzyme of its substrate. Human ARG1 is 322 amino acids (aa) in length. Its enzyme region comprises aa 9-309 and contains two Mn atoms. ARG1 is moderately active as a monomer, but highly active as a 105 kDa homotrimer. Trimerization is promoted by nitrosylation of Cys303, creating a regulatory feedback loop with NOS. There are two isoform variants, one that shows an eight aa insertion after Gln43, and another that shows a deletion of aa 204‑289. Full-length human ARG1 shares 87% aa identity with mouse and rat ARG1.

Long Name
Liver-Type Arginase
Entrez Gene IDs
383 (Human); 11846 (Mouse); 29221 (Rat)
Alternate Names
AI; ARG1; Arginase 1; arginase, liver; Arginase-1; EC; EC:; Liver Arginase; Liver-type arginase; PGIF; Type I Arginase

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