Enables chromatin binding activity. Predicted to be involved in transcription by RNA polymerase II. Predicted to be located in nucleoplasm. Predicted to be part of RNA polymerase II, core complex. Predicted to colocalize with chromosome, telomeric region. Is expressed in several structures, including alimentary system; brain; integumental system; respiratory system; and sensory organ. Orthologous to human POLR2B (RNA polymerase II subunit B). [provided by Alliance of Genome Resources, Apr 2022]