PDIA5 (Protein Disulfide Isomerase Family A, Member 5): PDIA5 is a protein that plays a key role in the folding and maturation of other proteins within the endoplasmic reticulum. It assists in the formation and rearrangement of disulfide bonds, which are essential for proper protein structure and stability. Proper PDIA5 function is critical for protein quality control, and its dysregulation has been linked to protein misfolding diseases, including diabetes and neurodegenerative disorders.