Human PSMA/FOLH1/NAALADase I Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human PSMA/FOLH1/NAALADase I in direct ELISAs and Western blots. In direct ELISAs and Western blots, less than 5% cross‑reactivity with recombinant mouse NAALADase II is observed.
  • Source
    Polyclonal Sheep IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    Chinese hamster ovary cell line CHO-derived recombinant human PSMA/FOLH1/NAALADase I
    Lys44-Ala750
    Accession # Q04609
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.2 µg/mL
    See below
  • Flow Cytometry
    2.5 µg/106 cells
    See below
  • Immunohistochemistry
    5-15 µg/mL
    See below
  • CyTOF-ready
    Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
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 Examples
Detection of Human PSMA/FOLH1/
NAALADase I by Western Blot.
Western blot shows lysates of human prostate tissue. PVDF membrane was probed with 0.2 µg/mL of Sheep Anti-Human PSMA/FOLH1/
NAALADase I Antigen Affinity-purified Poly­clonal Antibody (Catalog # AF4234) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for PSMA/FOLH1/NAALADase I at approximately 120 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Detection of PSMA/FOLH1/
NAALADase I in LnCAP Human Cell Line by Flow Cytometry.
LnCAP human prostate cancer cell line was stained with Human PSMA/FOLH1/NAALADase I Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4234, filled histo­gram) or control antibody (Catalog # 5-001-A, open histo­gram), followed by Northern­Lights™ 557-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # NL010).
Immunohistochemistry
PSMA/FOLH1/NAALADase I in Human Prostate Cancer Tissue. PSMA/FOLH1/NAALADase I was detected in immersion fixed paraffin-embedded sections of human prostate cancer tissue using Sheep Anti-Human PSMA/FOLH1/NAALADase I Antigen Affinity-purified Poly­clonal Antibody (Catalog # AF4234) at 5 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counter­stained with hematoxylin (blue). Specific labeling was localized to the plasma membrane and extracellular space. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.2 mg/mL in sterile PBS.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: PSMA/FOLH1/NAALADase I

Human prostate-specific membrane antigen (PSMA), a tumor marker in prostate cancer encoded by the FOLH1 gene, is a type II transmembrane zinc metallopeptidase that is most highly expressed in the nervous system, prostate, kidney, and small intestine (1, 2). The enzyme is also known as glutamate carboxypeptidase II (GCPII), folate hydrolase 1, folypoly-gamma-glutamate carboxypeptidase (FGCP), and N-acetylated-alpha-linked acidic dipeptidase I (NAALADase I). In the brain, PSMA hydrolyzes the neurotransmitter N-acetyl-Asp-Glu to produce glutamate, another neurotransmitter. Inhibition of brain PSMA activity is considered to be a promising approach for the treatment of neurological disorders associated with glutamate excitotoxicity, such as stroke, chronic pain, and amyotrophic lateral sclerosis (3). Intestinal PSMA hydrolyzes folylpoly-gamma -glutamates, facilitating the uptake of folate (4).

  • References:
    1. Silver, D.A. et al. (1997) Clin. Cancer Res. 3:81.
    2. Carter, R.E. et al. (1996) Pro. Natl. Acad. Sci. USA 93:749.
    3. Jackson, P.F. and B.S. Slusher (2001) Curr. Med. Chem. 8:949.
    4. Heston, W.D. (1997) Urology 49:104.
  • Long Name:
    Prostate-specific Membrane Antigen
  • Entrez Gene IDs:
    2346 (Human); 53320 (Mouse); 85309 (Rat)
  • Alternate Names:
    Cell growth-inhibiting gene 27 protein; cell growth-inhibiting protein 27; EC 3.4.17.21; FGCP; folate hydrolase (prostate-specific membrane antigen) 1; Folate hydrolase 1; FOLH1; FOLHNAALADase I; Folylpoly-gamma-glutamate carboxypeptidase; GCP2; GCPII; GCPIImGCP; glutamate carboxylase II; glutamate carboxypeptidase 2; Glutamate carboxypeptidase II; Membrane glutamate carboxypeptidase; mopsm; NAALAD1; NAALAD1N-acetylated-alpha-linked acidic dipeptidase I; NAALADase I; NAALAdase; N-acetylated alpha-linked acidic dipeptidase 1; prostate specific membrane antigen variant F; Prostate-specific membrane antigen; PSMA; PSMAFGCP; PSMPteroylpoly-gamma-glutamate carboxypeptidase
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