The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
1/1000. Predicted molecular weight: 57 kDa.
1/50. Perform heat mediated antigen retrieval before commencing with IHC staining protocol. We can recommend to use pH 6.0 citrate buffer.
Methanol permeabilization is recommended.
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.
Immunohistochemical analysis of formalin-fixed, paraffin-embedded Human small intestine tissue, staining P4HB with ab85564 at 1/50 dilution.
References for Anti-P4HB antibody (ab85564)
This product has been referenced in:
Koga K et al. Macrophage migration inhibitory factor provides cardioprotection during ischemia/reperfusion by reducing oxidative stress. Antioxid Redox Signal14:1191-202 (2011).
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