PDI polyclonal antibody

Protein disulfide isomerase or PDI is an enzyme in the endoplasmic reticulum in eukaryotes that catalyzes the formation and breakage of disulfide bonds between cysteine residues within proteins as they fold. Another major function of PDI relates to its activity as a chaperone; i.e., it aids wrongly folded proteins to reach a correctly folded state without the aid of enzymatic disulfide shuffling. PDI has been found to be involved in the breaking of bonds on the HIV gp120 protein during HIV infection of CD4 positive cells, and is required for HIV infection of lymphocytes and monocytes.