Human GLRX2 (GRX2) knockout HeLa cell lysate

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

The target GRX2 also commonly known as GLRX2 is a human protein encoded by the GLRX2 gene. GRX2 functions as a glutaredoxin a type of enzyme involved in the process of reducing disulfide bonds in proteins which is essential for cell redox regulation. The protein has a molecular mass of approximately 16 kDa and primarily resides in the mitochondria and cytoplasm of cells. Its expression occurs in various tissues with significant levels in the heart brain and skeletal muscle indicating its broad functional roles across different organ systems.

Biological function summary

The GRX2 protein plays a critical role in maintaining cellular redox balance by facilitating the reversible oxidation of protein cysteines. This is important for protecting cells against oxidative stress. GRX2 does not function as an isolated entity but instead forms part of larger multi-protein complexes interacting with other enzymes to regulate cellular homeostasis. These interactions help to protect cells from oxidative damage promote protein folding and regenerate other antioxidants.

Pathways

GRX2 holds a significant position in the redox regulation and antioxidant pathways. It partners with thioredoxin reductase and glutathione systems to mediate these pathways and manage cellular oxidative stress. The protein's activity is closely tied to glutathione with GRX2 often acting in synergy with glutathione to reduce complex oxidized protein thiols. This collaboration is vital in the oxidative stress response where the pathway elements must efficiently counterbalance oxidative challenges.

Associated diseases and disorders

GRX2's function links it to several oxidative stress-related conditions including neurodegenerative diseases and cardiovascular disorders. In neurodegenerative diseases like Parkinson's disease GRX2's ability to combat oxidative stress is compromised leading to neuronal damage. Additionally the protein's interaction with other redox regulatory proteins such as thioredoxin suggests interconnected roles in the progression of these disorders. Cardiovascular diseases also involve GRX2 due to its essential function in maintaining cardiovascular integrity under environmental and metabolic oxidative stress.