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Sulfiredoxin

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Encyclopedia of Signaling Molecules

Synonyms

Cysteine sulfinic acid reductase; Npn3; Srx; Srx1; Srxn1

Historical Background

Redox homeostasis is critical for normal cellular function, and cellular redox imbalance is associated with a number of human pathologies including cardiovascular disease and cancer (Ye et al. 2015). Reactive oxygen species (ROS) include the superoxide anion (O2●─), hydrogen peroxide (H2O2), and hydroxyl radicals (OH). Both exogenous and endogenous sources contribute to intracellular ROS levels. Environmental sources of ROS include ionizing radiation and certain drugs and toxins. The major endogenous source of ROS to be recognized is electrons leaking prematurely from mitochondrial electron transport chain complexes I and III that reduce molecular oxygen to superoxide anion. The superoxide produced is rapidly converted to hydrogen peroxide by spontaneous dismutation or by the activity of superoxide dismutase enzymes, and the hydrogen peroxide thus produced acts as a second messenger in cellular...

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Correspondence to Kenneth D. Tew .

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Zhang, J., Ye, Zw., Bowers, R.R., Townsend, D.M., Tew, K.D. (2018). Sulfiredoxin. In: Choi, S. (eds) Encyclopedia of Signaling Molecules. Springer, Cham. https://doi.org/10.1007/978-3-319-67199-4_258

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