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