Mex-3 RNA Binding Family Member B
RNF195
RKHD3
Ring Finger And KH Domain Containing 3
RNA-Binding Protein MEX3B
RING Finger Protein 195
DKFZp434J0617
RING Finger And KH Domain-Containing Protein 3
Mex-3 Homolog B (C. Elegans)
KIAA2009
MEX-3B
This gene encodes an RNA-binding phosphoprotein that is part of the MEX3 (muscle excess 3) family of translational regulators. The encoded protein contains N-terminal nuclear export and nuclear localization signals and is exported from the cytoplasm to the nucleus. The protein binds to RNA via two KH domains and also colocalizes with MEX3A, Dcp1A decapping factor and Argonaute proteins within P (processing) bodies. [provided by RefSeq, Oct 2012]
Forensic Context
A study in rats demonstrated that Mex3B expression in iliopsoas muscle is part of a biological defense response under severe hypothermia, where its suppression induces Socs3 activation, reduces caspase 3/7 activity, and increases ATP levels, contributing to cell survival via the Socs3-Casp3 axis [Umehara et al. DOI:10.1016/j.legalmed.2022.102150]. The MEX3B is a component of the Mex3B-Socs3-Casp3 axis, which may assist in diagnosing fatal hypothermia [Lei et al. DOI:10.1093/gpbjnl/qzag007].