EOG8ZCWJR GO:0003756 25/91 protein disulfide isomerase activity molecular_function "Catalysis of the rearrangement of both intrachain and interchain disulfide bonds in proteins." [EC:5.3.4.1] EOG8ZCWJR GO:0016671 25/91 oxidoreductase activity, acting on a sulfur group of donors, disulfide as acceptor molecular_function "Catalysis of an oxidation-reduction (redox) reaction in which a sulfur-containing group acts as a hydrogen or electron donor and reduces disulfide." [GOC:jl] EOG8ZCWJR GO:0005783 25/91 endoplasmic reticulum cellular_component "The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached)." [ISBN:0198506732] EOG8ZCWJR GO:0005789 1/91 endoplasmic reticulum membrane cellular_component "The lipid bilayer surrounding the endoplasmic reticulum." [GOC:mah] EOG8ZCWJR GO:0051085 1/91 chaperone mediated protein folding requiring cofactor biological_process "The process of assisting in the correct posttranslational noncovalent assembly of proteins, which is dependent on additional protein cofactors. This process occurs over one or several cycles of nucleotide hydrolysis-dependent binding and release." [GOC:rb] EOG8ZCWJR GO:0016491 1/91 oxidoreductase activity molecular_function "Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced." [GOC:go_curators]