Affinity purified from pooled serum. Learn more.

Tryptophan Hydroxylase (Ser260) Antibody

Catalog #: p1575-260 Category: Datasheet:


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Rabbit polyclonal antibody

Pooled Serum
Affinity Purified from Pooled Serum
Species Reactivity:
Rat, Mouse, Human, Bovine, Chicken, Zebra fish, Canine
WB 1:1000
Gene Name:
Molecular Reference:
~55 kDa
Cite This Antibody:
PhosphoSolutions Cat# p1575-260, RRID:AB_2492274
Antigen/Purification: ExpandCollapse

The antigen is a phosphopeptide corresponding to amino acid residues surrounding the phospho-Ser260 of rat tryptophan hydroxylase (TPH).

The antibody is prepared from pooled rabbit serum by affinity purification via sequential chromatography on phospho- and dephospho-peptide affinity columns.

Biological Significance: ExpandCollapse

Tryptophan hydroxylase (TPH) catalyzes the 5-hydroxylation of tryptophan, which is the first step in the biosynthesis of indoleamines (serotonin and melatonin) (Martinez et al., 2001). In mammals, serotonin biosynthesis occurs predominantly in neurons which originate in the Raphe nuclei of the brain, and melatonin synthesis takes place within the pineal gland. Although TPH catalyzes the same reaction within the Raphe nuclei and the pineal gland, TPH activity is rate-limiting for serotonin but not melatonin biosynthesis. Serotonin functions mainly as a neurotransmitter, whereas melatonin is the principal hormone secreted by the pineal gland. The activity of TPH is enhanced by phosphorylation by cAMP-dependent protein kinase (PKA) and Ca2+/calmodulin kinase II (CaM K II) (Jiang et al., 2000; Johansen et al., 1996). CaM K II phosphorylates Ser260 which lies within the regulatory domain of TPH (Jiang et al., 2000).

Synonyms: ExpandCollapse

• Indoleacetic acid 5 hydroxylase antibody
• L tryptophan hydroxylase antibody
• MGC119994 antibody
• TPH 1 antibody
• TPH antibody
• TPH1 antibody
• TPH1_HUMAN antibody
• TPRH antibody
• TRPH antibody
• Tryptophan 5 hydroxylase 1 antibody
• Tryptophan 5 monooxygenase 1 antibody
• Tryptophan 5 monooxygenase antibody
• Tryptophan 5-hydroxylase 1 antibody
• Tryptophan 5-monooxygenase 1 antibody
• Tryptophan hydroxylase 1 antibody


100 µl in 10 mM HEPES (pH 7.5), 150 mM NaCl, 100 µg per ml BSA and 50% glycerol. Adequate amount of material to conduct 10-mini Western Blots.

For long term storage –20° C is recommended. Stable at –20° C for at least 1 year.

General References

Jiang GC, Yohrling GJ, Schmitt JD, Vrana KE (2000) Identification of substrate orienting and phosphorylation sites within tryptophan hydroxylase using homology-based molecular modeling. J Mol Biol 302:1005-1017.

Johansen PA, Jennings I, Cotton RG, Kuhn DM (1996) Phosphorylation and activation of tryptophan hydroxylase by exogenous protein kinase A. J Neurochem 66:817-823.

Martinez A, Knappskog PM, Haavik J (2001) Structural approach into human tryptophan hydroxylase and its implications for the regulation of serotonin biosynthesis. Curr Med Chem 8:1077-1091.


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Tryptophan Hydroxylase Ser260 Antibody
Western blot of rat brainstem lysate showing specific immunolabeling of the ~55 kDa TPH protein phosphorylated at Ser260 in lane one (-). Phosphospecificity is shown in the second lane (P) where immunolabeling is blocked by preadsorption with the phosphopeptide used as antigen, but not by the corresponding non-phosphopeptide (NP), shown in the third lane.

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