This protein is a component of the heterogeneous nuclear ribonucleoprotein (hnRNP) complexes which provide the substrate for the processing events that pre-mRNAs undergo before becoming functional, translatable mRNAs in the cytoplasm. Binds poly(RG). This is the function of ENSG00000126945 (HNRNPH2, heterogeneous nuclear ribonucleoprotein H2).