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PA5-22009 targets arginase I in ICC, IF, IHC (P), and WB applications and shows reactivity with Human and mouse samples. For immunohistochemistry, antigen retrieval using heat mediated 10 mM citrate buffer (pH 6.0) or Tris-EDTA buffer (pH 8.0) is recommended.
The PA5-22009 immunogen is recombinant protein fragment contain a sequence corresponding to a region within amino acids 1 and 322 (P05089) of Arginase I.
Arginase-1 (Arg1) is a 35 kDa enzyme converting L-arginine to urea and L-ornithine, which is the final step in the urea cycle. The resulting polyamines are important for cell proliferation and removal of toxins that arise from protein degradation. By degrading arginine, Arginase 1 deprives NO synthase of its substrate and down-regulates nitric oxide production. In both human and mouse, Arginase 1 is expressed in the liver, neutrophils, myeloid derived suppressor cells (MDSC) and neural stem cells. In human, expression in blood neutrophils but not in CCR3+ granulocytes has been reported. In mice, expression of Arginase 1 is one of the hallmarks of alternatively activated macrophages (M2a). Arginase-1 may be expressed in the myeloid cells infiltrating tumors, and is typically found in the majority of hepatocellular carcinomas. Defects in Arginase 1 are the cause of argininemia, an autosomal recessive disorder characterized by hyperammonemia.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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