Product Name: PDI Human

Product No: ENZ-262

Synonym(s): Protein Disulfide Isomerase Human Recombinant, Protein Disulfide Isomerase, PDI, EC, Prolyl 4-hydroxylase subunit beta, Cellular thyroid hormone-binding protein, p55, P4HB, ERBA2L, PDIA1, PO4DB, DSI, GIT, PHDB, PO4HB, PROHB, P4Hbeta.

One-Letter-Code: The sequence of the first five N-terminal amino acids was determined and was found to be Met-Leu-Arg-Arg-Ala.

Description: PDI Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 503 amino acids and having a molecular mass of 62.4 kDa. The PDI is fused to a 12 amino acid His tag (515 a.a. total) at N-terminal and purified by proprietary chromatographic techniques.

Protein Derived From: Escherichia Coli.

Physical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.

Purity: Greater than 95.0% as determined by:a) Analysis by RP-HPLC.b) Analysis by SDS-PAGE.

Stability: Lyophilized Protein Disulfide Isomerase although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Human PDI should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please avoid freeze-thaw cycles.

Solubility: It is recommended to reconstitute the lyophilized PDI in sterile 18MOmega-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Isomerase Activity: 0.5 µmol active RNase A min-1 µmol PDI-1. According to the re-activation of reduced and denatured RNase A (Lyles, M. M. and Gilbert, H. F. (1991) Biochemistry 30, 613-619).

Reductase Activity: 0.001 650nm/ min-2. By measuring the turbidity increase at 650 nm due to insulin reduction (Holmgren, A. (1979) J. Biol. Chem. 254, 9627-9632). The activity is expressed as the ratio of the slope of a linear part of the turbidity curve to the lag time (Mart?´nez-Galisteo, E., Padilla, C. A., Garcia-Alfonso, C., Lo´pez-Barea, J., and Barcena, J. A. (1993) Biochimie (Paris) 75, 803-809).

References: Title: Protein disulfide isomerases are antibody targets during immune-mediated tumor destructionPublications: Blood113.8 (2009): 1681-1688.Link:

Special Note(s): Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.