Cell Signaling Technology

Product Pathways - Translational Control

PDI (C81H6) Rabbit mAb #3501

Applications Reactivity Sensitivity MW (kDa) Isotype
W IHC-P IF-IC H M R Mk Endogenous 57 Rabbit

Applications Key:  W=Western Blotting  IHC-P=Immunohistochemistry (Paraffin)  IF-IC=Immunofluorescence (Immunocytochemistry)
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

* Product-specific protocol.

Specificity / Sensitivity

PDI (C81H6) Rabbit mAb detects endogenous levels of total PDI protein.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to the sequence of human PDI.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell types using PDI (C81H6) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human lung carcinoma using PDI (C81H6) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human lymphoma using PDI (C81H6) Rabbit mAb.


IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded mouse spleen using PDI (C81H6) Rabbit mAb.

IF-IC

IF-IC

Confocal immunofluorescent analysis of NIH/3T3 cells using PDI (C81H6) Rabbit mAb (green) and β-Actin (8H10D10) Mouse mAb #3700 (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).

Background

During their synthesis, secretory proteins translocate into the endoplasmic reticulum (ER) where they are post-translationally modified and properly folded. To reach their native conformation, many secretory proteins require the formation of intra- or inter-molecular disulfide bonds (1). This process is called oxidative protein folding. Protein disulfide isomerase (PDI) catalyzes the formation and isomerization of these disulfide bonds (2). Studies on mechanisms of oxidative folding suggest that molecular oxygen oxidizes the ER-protein Ero1, which in turn oxidizes PDI through disulfide exchange (3). This event is then followed by PDI-catalyzed disulfide bond formation in folding proteins (3).

  1. Huppa, J.B. and Ploegh, H.L. (1998) Cell 92, 145-148.
  2. Ellgaard, L. and Ruddock, L.W. (2005) EMBO Rep. 6, 28-32.
  3. Tu, B.P. and Weissman, J.S. (2004) J. Cell Biol. 164, 341-346.

Application References

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Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

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