Transcription of eukaryotic ribosomal RNA gene.

Remarkable advances have been made in the identification of the promoter regions for the ribosomal RNA genes from lower and higher eukaryotes. There has been some progress in the elucidation of the factors that control transcription of the ribosomal RNA gene. The characterization of the transcription factors are crucial for the understanding of the molecular mechanisms of ribosomal gene expression.