PKR (Protein kinase-R) is a ubiquitously expressed serine-threonine kinase that has been implicated as a signal integrator in translational and transcriptional control pathways. PKR mediate apoptosis induced by many different stimuli, such as LPS (Lipopolysaccharides), IFN-Gamma (Interferon-Gamma), cytokines, growth factor, viral infection, or serum starvation. PKR activity is regulated by external signals, which act on proteins, which interact with PKR. Among the proteins identified so far are p58, a cellular ...
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