Anti-PDI Antibody__Rabbit Anti-Rat PDI Polyclonal Bindarit
Storage Buffer
PBS pH7.4, 50% glycerol, 0.09% sodium azide
Storage Temperature
-20ºC
Shipping Temperature
Blue Ice or 4ºC
Purification
Peptide Affinity Purified
Clonality
Polyclonal
Specificity
Detects ~58kDa.
Cite This Product
Rabbit Anti-Rat PDI Polyclonal (StressMarq Biosciences Inc., Victoria BC CANADA, Catalog # SPC-114)
Certificate of Analysis
A 1:1000 dilution of SPC-114 was sufficient for detection of PDI in 20 µg of HeLa cell lysate by ECL immunoblot analysis.
Alternative Names
PDA2 Antibody, PDI Antibody, PDIA2 Antibody, PDIP Antibody, pancreatic protein disulfide isomerase Antibody
Research Areas
Cell Signaling, Chaperones, Organelle Markers, Trafficking
Cellular Localization
Endoplasmic Reticulum, Endoplasmic reticulum lumen
Accession Number
NP_001099245.2
Gene ID
287164
Swiss Prot
P04785
Scientific Background
The three dimensional structure of many extracellular proteins is stabilized by the formation of disulphide bonds. Studies suggest that a microsomal enzyme known as Protein Disulphide Isomerase (PDI) is involved in disulphide-bond formation via its oxidase activity and isomerization via its isomerase activity, as well as the reduction of disulphide bonds in proteins (1). Studies suggest BiP and PDI work together sequentially to increase oxidation of these proteins (2, 3). PDI has also been found to function as a chaperone to prevent the aggregation of unfolded substrates, and serves as a subunit of prolyl 4-hydroxylase and microsomal triglyceride transferase (4, 5).
PDI is an abundant 55kDa protein located primarily in the ER, however studies have also proved its presence in the cytosol (1). PDI has the ability to reside in the ER permanently due to the highly conserved KDEL sequence at its carboxy-terminus (6). It uses carboxy-terminal KDEL as a retention signal, and this appears to be sufficient to reduce the secretion of proteins from the ER. This retention is reported to be mediated by a KDEL receptor (7).
References
1. NA K.S. et al. (2007) Mol Cells. 24(2): 261-7.
2. Mayer M., Kies U., Kammermeier R., and Buchner J. (2000) J Biol Chem. 275(38): 29421-5.
3. Delom F., Mallet B., Carayon P., and Lejeune P.J. (2001) J Biol Chem 276(24): 21337-42.
4. Schultz-Norton J.R., McDonald W.H., Yates J.R. and Nardulli A.M. (2006) Mol Endocrinol 20(9): 1982-95.
5. Turano C., Coppari S. Altieri F. and Ferraro (2002) J Cell Physiol 193: 154-163.
6. Janiszewski M. (2005) J. Biol Chem. 280(49): 40813- 40819.
7. Yoshimori T., et al. (1990) J Biol Chem. 265(26): 15984-90.
PDI is an abundant 55kDa protein located primarily in the ER, however studies have also proved its presence in the cytosol (1). PDI has the ability to reside in the ER permanently due to the highly conserved KDEL sequence at its carboxy-terminus (6). It uses carboxy-terminal KDEL as a retention signal, and this appears to be sufficient to reduce the secretion of proteins from the ER. This retention is reported to be mediated by a KDEL receptor (7).
2. Mayer M., Kies U., Kammermeier R., and Buchner J. (2000) J Biol Chem. 275(38): 29421-5.
3. Delom F., Mallet B., Carayon P., and Lejeune P.J. (2001) J Biol Chem 276(24): 21337-42.
4. Schultz-Norton J.R., McDonald W.H., Yates J.R. and Nardulli A.M. (2006) Mol Endocrinol 20(9): 1982-95.
5. Turano C., Coppari S. Altieri F. and Ferraro (2002) J Cell Physiol 193: 154-163.
6. Janiszewski M. (2005) J. Biol Chem. 280(49): 40813- 40819.
7. Yoshimori T., et al. (1990) J Biol Chem. 265(26): 15984-90.