Structural Studies of RNase P
RNase P is one of the first ribozyme discovered and is found in all phylogenetic groups. It is responsible for processing the 5 end of pre-tRNAs and other RNA molecules. RNase P is formed by an RNA molecule responsible for catalysis and one or more proteins. Structural studies of the proteins from different organisms, the bacterial RNA component, and a bacterial RNase P holoenzyme/tRNA complex provide insights into the mechanism of this universal ribozyme. Together with the existing wealth of biochemical information, these studies are providing atomic level understanding of the mechanism of RNase P. The studies of RNase P continue to serve as paradigms for understanding the structure and architecture of large RNA molecules and ribonucleoprotein complexes, the nature of catalysis by ribozymes, the structural basis of recognition of RNA by RNA molecules, and the evolution of enzymes from the prebiotic, RNA-based world to the modern world. Expected final online publication date for the Annual Review of Biophysics Volume 42 is May 06, 2013. Please see http://www.annualreviews.org/catalog/pubdates.aspx for revised estimates.