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

Alternate Names

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

Entrez Gene IDs

383 (Human); 11846 (Mouse); 29221 (Rat)

Gene Symbol

ARG1

UniProt

P05089

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Product Specific Notices

This product is provided under an intellectual property license from Life Technologies Corporation. The transfer of this product is conditioned on the buyer using the purchased product solely in research conducted by the buyer, excluding contract research or any fee for service research, and the buyer must not (1) use this product or its components for (a) diagnostic, therapeutic or prophylactic purposes; (b) testing, analysis or screening services, or information in return for compensation on a per-test basis; or (c) manufacturing or quality assurance or quality control, and/or (2) sell or transfer this product or its components for resale, whether or not resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.

For research use only

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Human Arginase 1/ARG1 Alexa Fluor™ Plus 647-conjugated Antibody

R&D Systems, part of Bio-Techne | Catalog # FAB58681AFP647

Key Product Details

Species Reactivity

Applications

Label

Antibody Source

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Product Specifications

Specificity

Clonality

Host

Isotype

Applications

CyTOF-reported

Flow Cytometry

Background: Arginase 1/ARG1