• Product nameAnti-P4HB antibody
    See all P4HB primary antibodies
  • Description
    Mouse polyclonal to P4HB
  • Tested applicationsSuitable for: ICC/IF, IHC-P, WBmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Full length human P4HB protein (NP_000909.2)

  • Positive control
    • Human liver tissue lysate and P4HB transfected 293T lysate.


Associated products


Our Abpromise guarantee covers the use of ab70415 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
ICC/IF Use a concentration of 10 µg/ml.
IHC-P Use a concentration of 5 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
WB 1/500 - 1/1000. Detects a band of approximately 57 kDa (predicted molecular weight: 57 kDa).


  • FunctionThis multifunctional protein catalyzes the formation, breakage and rearrangement of disulfide bonds. At the cell surface, seems to act as a reductase that cleaves disulfide bonds of proteins attached to the cell. May therefore cause structural modifications of exofacial proteins. Inside the cell, seems to form/rearrange disulfide bonds of nascent proteins. At high concentrations, functions as a chaperone that inhibits aggregation of misfolded proteins. At low concentrations, facilitates aggregation (anti-chaperone activity). May be involved with other chaperones in the structural modification of the TG precursor in hormone biogenesis. Also acts a structural subunit of various enzymes such as prolyl 4-hydroxylase and microsomal triacylglycerol transfer protein MTTP.
  • Sequence similaritiesBelongs to the protein disulfide isomerase family.
    Contains 2 thioredoxin domains.
  • Cellular localizationEndoplasmic reticulum lumen. Melanosome. Cell membrane. Highly abundant. In some cell types, seems to be also secreted or associated with the plasma membrane, where it undergoes constant shedding and replacement from intracellular sources (Probable). Localizes near CD4-enriched regions on lymphoid cell surfaces. Identified by mass spectrometry in melanosome fractions from stage I to stage IV.
  • Information by UniProt
  • Database links
  • Alternative names
    • Cellular thyroid hormone binding protein antibody
    • Cellular thyroid hormone-binding protein antibody
    • Collagen prolyl 4 hydroxylase beta antibody
    • Disulphide Isomerase antibody
    • DSI antibody
    • EC antibody
    • Endoplasmic reticulum resident protein 59 antibody
    • ER protein 59 antibody
    • ERBA2L antibody
    • ERp59 antibody
    • GIT antibody
    • Gltathione insulin transhydrogenase antibody
    • Glutathione insulin transhydrogenase antibody
    • P4HB antibody
    • P4Hbeta antibody
    • p55 antibody
    • PDI antibody
    • PDIA1 antibody
    • PDIA1_HUMAN antibody
    • PDIR antibody
    • PHDB antibody
    • PO4DB antibody
    • PO4HB antibody
    • Procollagen proline 2 oxoglutarate 4 dioxygenase (proline 4 hydroxylase) beta polypeptide (protein disulfide isomerase associated 1) antibody
    • Procollagen proline 2 oxoglutarate 4 dioxygenase beta subunit antibody
    • PROHB antibody
    • Prolyl 4 hydroxylase beta polypeptide antibody
    • Prolyl 4 hydroxylase beta subunit antibody
    • Prolyl 4 hydroxylase subunit beta antibody
    • Prolyl 4-hydroxylase subunit beta antibody
    • Protein disulfide isomerase associated 1 antibody
    • Protein disulfide isomerase, family A, member 1 antibody
    • Protein disulfide isomerase/oxidoreductase antibody
    • Protein disulfide-isomerase antibody
    • Protocollagen hydroxylase antibody
    • Thbp antibody
    • Thyroid hormone binding protein p55 antibody
    • Thyroid hormone binding protein p55 cellular antibody
    • V erb a avian erythroblastic leukemia viral oncogene homolog 2 like antibody
    see all

Anti-P4HB antibody images

  • Anti-P4HB antibody (ab70415) at 1/500 dilution + Human liver tissue lysate at 25 µg

    Goat Anti-Mouse IgG (H&L)-HRP at 1/2500 dilution

    Predicted band size : 57 kDa
    Observed band size : 57 kDa
  • All lanes : Anti-P4HB antibody (ab70415) at 1/500 dilution

    Lane 1 : P4HB transfected 293T lysate
    Lane 2 : Non-transfected 293T lysate

    Lysates/proteins at 25 µg per lane.

    Goat Anti-Mouse IgG (H&L)-HRP at 1/2500 dilution

    Predicted band size : 57 kDa
    Observed band size : 62 kDa (why is the actual band size different from the predicted?)
  • ab70415 at 10µg/ml staining P4HB in Hela cells by Immunocytochemistry/Immunofluorescence.

  • IHC image of ab70415 staining in human normal liver formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab70415, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

References for Anti-P4HB antibody (ab70415)

ab70415 has not yet been referenced specifically in any publications.

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