Human Tryptophan Hydroxylase 1/TPH-1 Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human Tryptophan Hydroxylase 1/TPH‑1 in direct ELISAs and Western blots.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    S. frugiperda insect ovarian cell line Sf 21-derived recombinant human Tryptophan Hydroxylase 1/TPH‑1
    Met102-Pro403
    Accession # P17752
  • 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
    1 µg/mL
    See below
  • Immunohistochemistry
    5-15 µg/mL
    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 Examples
Detection of Human Tryptophan Hydroxylase 1/TPH‑1 by Western Blot. Western blot shows lysates of AGS human gastric adenocarcinoma cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human Tryptophan Hydroxylase 1/TPH‑1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5276) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for Tryptophan Hydroxylase 1 at approximately 60 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Immunohistochemistry
Tryptophan Hydroxylase 1/TPH‑1 in Human Brain. Tryptophan Hydroxylase 1/TPH‑1 was detected in immersion fixed paraffin-embedded sections of human brain (substantia nigra) using Goat Anti-Human Tryptophan Hydroxylase 1/TPH‑1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5276) at 1 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Goat IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC004). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to neurons. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Immunohistochemistry
Tryptophan Hydroxylase 1/TPH‑1 in Rat Brain. Tryptophan Hydroxylase 1/TPH‑1 was detected in perfusion fixed frozen sections of rat brain using Goat Anti-Human Tryptophan Hydroxylase 1/TPH‑1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5276) at 1.7 µg/mL overnight at 4 °C. Tissue was stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to neurons. View our protocol for Fluorescent IHC Staining of Frozen 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: Tryptophan Hydroxylase 1/TPH-1

Tryptophan Hydroxylase 1 (TPH-1) is a 50‑60 kDa intracellular enzyme that belongs to the biopterin-dependent, aromatic amino acid hydroxylase family. It is expressed in gut enterochromaffin cells and pineal gland. TPH-1 catalyzes the hydroxylation of L-Trp, which is the rate-limiting step in serotonin biosynthesis. Human TPH-1 is 444 amino acids (aa) in length. It contains an N-terminal regulatory domain (aa 1‑98), a catalytic region (aa 99‑424), and a C‑terminal Leu-zipper tetramerization domain (aa 425‑444). TPH-1 is phosphorylated on Ser58, and subsequently binds to 14-3-3 proteins, resulting in activation. It functions as a noncovalent Fe-binding 230 kDa homotetramer. There are three potential splice variants. One shows a 29 aa substitution for aa 438‑444, a second shows a 50 aa substitution for aa 157‑444, and a third shows a 68 aa substitution for aa 1‑21. Over aa 102‑403, Human TPH-1 shares 95% aa identical with mouse TPH-1.

  • Entrez Gene IDs:
    7166 (Human); 21990 (Mouse); 24848 (Rat)
  • Alternate Names:
    EC 1.14.16; EC 1.14.16.4; indoleacetic acid-5-hydroxylase; L-tryptophan hydroxylase; MGC119994; TPH; TPH-1; TPRH; TRPH; tryptophan 5-hydroxylase 1; Tryptophan 5-monooxygenase 1; tryptophan hydroxylase (tryptophan 5-monooxygenase); Tryptophan Hydroxylase 1
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