VIMP (VCP-interacting membrane protein), also known as selenoprotein S (SelS), is an endoplasmic reticulum (ER)-resident protein encoded by the *SELS* gene. It plays a critical role in ER-associated degradation (ERAD), a quality control mechanism that removes misfolded proteins from the ER. VIMP interacts with valosin-containing protein (VCP/p97), an ATPase involved in extracting ubiquitinated substrates for proteasomal degradation. This interaction positions VIMP as a key mediator in maintaining ER homeostasis and mitigating ER stress.
VIMP is implicated in inflammatory and metabolic disorders due to its dual roles in ERAD and redox regulation. As a selenoprotein, it contains a selenocysteine residue, enabling antioxidant activity that protects cells from oxidative damage. Studies link VIMP polymorphisms to conditions like type 2 diabetes, cardiovascular diseases, and autoimmune disorders, likely through its influence on cytokine production and stress responses.
Antibodies targeting VIMP are essential tools for studying its expression, localization, and interactions. They are used in techniques like Western blotting, immunofluorescence, and immunoprecipitation to investigate VIMP’s role in cellular stress pathways, disease mechanisms, and potential therapeutic strategies. Commercial VIMP antibodies are typically validated for specificity in human, mouse, or rat models, aiding translational research in metabolic and inflammatory diseases.