Human Prostatic Acid Phosphatase HEK293 Overexpression Lysate: Product Information
This Human Prostatic Acid Phosphatase overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Prostatic Acid Phosphatase protein (Cat: 10959-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the human ACPP (NP_001127666.1) (Met 1-Lys 382) was fused with a polyhistidine tag at the C-terminus.
The recombinant human ACPP consists of 361 amino acids and has a predicted molecular mass of 42 kDa. The apparent molecular mass of rh ACPP is approximately 45-55 kDa in SDS-PAGE under reducing conditions.
Human Prostatic Acid Phosphatase HEK293 Overexpression Lysate: Usage Guide
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.
2. Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
Stability & Storage
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB) Optimal dilutions/concentrations should be determined by the end user.
Human Prostatic Acid Phosphatase HEK293 Overexpression Lysate: Alternative Names
Human 5'-NT Overexpression Lysate; Human ACP-3 Overexpression Lysate; Human ACP3 Overexpression Lysate; Human PAP Overexpression Lysate
Prostatic Acid Phosphatase Background Information
Prostatic acid phosphatase (PAP, or ACPP), also known as prostatic specific acid phosphatase (PSAP), is an enzyme produced by the prostate. As a non-specific phosphomonoesterase, Prostatic acid phosphatase synthetized and secreted into seminal plasma under androgenic control. The enzyme is a dimer of molecular weight around 1 kDa. Prostatic acid phosphatase is a clinically important protein for its relevance as a biomarker of prostate carcinoma. Furthermore, it has a potential role in fertilization. The major action of PAP is to dephosphorylate macromolecules with the help of catalytic residues (His(12) and Asp(258)) that are located in the cleft between two domains. Cellular prostatic acid phosphatase (cPAcP), an authentic tyrosine phosphatase, is proposed to function as a negative growth regulator of prostate cancer (PCa) cells in part through its dephosphorylation of ErbB-2. cPAcP functions as a neutral protein tyrosine phosphatase (PTP) in prostate cancer cells and dephosphorylates HER-2/ErbB-2/Neu (HER-2: human epidermal growth factor receptor-2) at the phosphotyrosine (p-Tyr) residues. Injection of the secretory isoform of PAP has potent antinociceptive effects in mouse models of chronic pain. This enzyme exhibits ecto-5'-nucleotidase activity, is widely distributed, and implicated in the formation of chronic pain. Additionally, PAP could be a target molecule in specific immunotherapy for patients with nonprostate adenocarcinomas including colon and gastric cancers.
acid phosphatase, prostate
Hassan MI, et al. (2010) Structural and functional analysis of human prostatic acid phosphatase. Expert Rev Anticancer Ther. 10(7): 1055-68.
Chuang TD, et al. (2010) Human prostatic acid phosphatase, an authentic tyrosine phosphatase, dephosphorylates ErbB-2 and regulates prostate cancer cell growth. J Biol Chem. 285(31): 23598-606.
Larsen RS, et al. (2009) A high throughput assay to identify small molecule modulators of prostatic acid phosphatase. Curr Chem Genomics. 3: 42-9.
Zimmermann H. (2009) Prostatic acid phosphatase, a neglected ectonucleotidase. Purinergic Signal. 5(3): 273-5.
Wang Y, et al. (2005) Prostatic acid phosphatase as a target molecule in specific immunotherapy for patients with nonprostate adenocarcinoma. J Immunother. 28(6): 535-41.
Veeramani S, et al. (2005) Cellular prostatic acid phosphatase: a protein tyrosine phosphatase involved in androgen-independent proliferation of prostate cancer. Endocr Relat Cancer. 12(4): 805-22.
Ostrowski WS, et al. (1994) Human prostatic acid phosphatase: selected properties and practical applications. Clin Chim Acta. 226(2): 121-9.
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