
- Species ReactivityHuman
- SpecificityDetects human Tryptophan Hydroxylase 1/TPH‑1 in direct ELISAs and Western blots.
- SourcePolyclonal Goat IgG
- PurificationAntigen Affinity-purified
- ImmunogenS. frugiperda insect ovarian cell line Sf 21-derived recombinant human Tryptophan Hydroxylase 1/TPH‑1
Met102-Pro403
Accession # P17752 - FormulationLyophilized 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.
- LabelUnconjugated
- Western Blot1 µg/mLSee below
- Immunohistochemistry5-15 µg/mLSee below
- ReconstitutionReconstitute at 0.2 mg/mL in sterile PBS.
- ShippingThe 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 & StorageUse 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.
- 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
Background:
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.
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