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Updated: Aug 7, 2026

Studying RNA Interactors of Protein Kinase RNA-Activated during the Mammalian Cell Cycle
Published on: March 5, 2019
A new double-stranded RNA binding protein (DRBP-120) is associated with double-stranded RNA-activated protein kinase
Shuji Watanabe1, Tetsuro Yamashita, Hideharu Taira
1Department of Physiology, School of Medicine, Iwate Medical University, Morioka 020-8505, Japan.
Abstract:
Double-stranded RNA-activated protein kinase (PKR) plays an important role in interferon-induced antiviral responses, and is also involved in intracellular signaling pathways, including the apoptosis, proliferation, and transcription pathways. In this study, a new 120-kDa PKR-associated protein designated double-stranded RNA binding protein (DRBP)-120 was identified using co-immunoprecipitation with anti-PKR antiserum and two-dimensional electrophoresis. Furthermore, DRBP-120 is a double-stranded RNA (dsRNA)-binding protein, and it was detected in both the cytoplasm and the nucleus of HeLa cells associated with PKR.
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