HEATR1 (HEAT Repeat Containing 1) is a Protein Coding gene. Among its related pathways are Ribosome biogenesis in eukaryotes and rRNA processing in the nucleus and cytosol. Ribosome biogenesis factor. Involved in nucleolar processing of pre-18S ribosomal RNA. Required for optimal pre-ribosomal RNA transcription by RNA polymerase I.