Recombinant Anti-Tryptophan Hydroxylase/TPH antibody [EP1311Y] - BSA and Azide free (ab227845)


  • Product name

    Anti-Tryptophan Hydroxylase/TPH antibody [EP1311Y] - BSA and Azide free
    See all Tryptophan Hydroxylase/TPH primary antibodies
  • Description

    Rabbit monoclonal [EP1311Y] to Tryptophan Hydroxylase/TPH - BSA and Azide free
  • Host species

  • Tested applications

    Suitable for: WB, IP, IHC-P, Flow Cyt, ICC/IFmore details
  • Species reactivity

    Reacts with: Mouse, Rat, Human
  • Immunogen

    aa 350-450 (C terminal).

  • Positive control

    • THP-1 cell lysate and human urinary bladder carcinoma.
  • General notes

    ab227845 is the carrier-free version of ab52954 This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.


    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    Use our conjugation kits  for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

    Ab227845 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.

    This product was previously labelled as Tryptophan Hydroxylase



Our Abpromise guarantee covers the use of ab227845 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use at an assay dependent concentration. Detects a band of approximately 51 kDa (predicted molecular weight: 51 kDa).
IP Use at an assay dependent concentration.
IHC-P Use at an assay dependent concentration. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
Flow Cyt Use at an assay dependent concentration.

ab199376 - Rabbit monoclonal IgG (Low endotoxin, Azide free), is suitable for use as an isotype control with this antibody.

ICC/IF Use at an assay dependent concentration.


  • Tissue specificity

    Isoform 2 seems to be less widely expressed than isoform 1.
  • Pathway

    Aromatic compound metabolism; serotonin biosynthesis; serotonin from L-tryptophan: step 1/2.
  • Sequence similarities

    Belongs to the biopterin-dependent aromatic amino acid hydroxylase family.
    Contains 1 ACT domain.
  • Information by UniProt
  • Database links

  • Alternative names

    • 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
    see all


  • Overlay histogram showing HeLa cells stained with ab52954 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab52954, 1/100 dilution) for 30 min at 22�C. The secondary antibody used was DyLight® 488 goat anti-rabbit IgG (H+L) (ab96899) at 1/500 dilution for 30 min at 22�C. Isotype control antibody (black line) was rabbit IgG (monoclonal) (1µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab52954).

  • This IHC data was generated using the same anti-Tryptophan Hydroxylase/TPH antibody clone, EP1311Y, in a different buffer formulation (cat# ab52954).

    ab52954 at 1/50 dilution staining Tryptophan Hydroxylase/TPH in human urinary bladder carcinoma by Immunohistochemistry, Paraffin embedded tissue.


This product has been referenced in:

  • Acosta-Andrade C  et al. A novel role for antizyme inhibitor 2 as a regulator of serotonin and histamine biosynthesis and content in mouse mast cells. Amino Acids 48:2411-21 (2016). Read more (PubMed: 27084713) »
  • Baskar K  et al. Functional constituents of a local serotonergic system, intrinsic to the human coronary artery smooth muscle cells. Mol Biol Rep 42:1295-307 (2015). Read more (PubMed: 25861735) »
See all 9 Publications for this product

Customer reviews and Q&As

There are currently no Customer reviews or Questions for ab227845.
Please use the links above to contact us or submit feedback about this product.

For licensing inquiries, please contact

Sign up