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- Title
Structures of ribonucleoprotein particle modification enzymes.
- Authors
Liang, Bo; Li, Hong
- Abstract
Small nucleolar and Cajal body ribonucleoprotein particles (RNPs) are required for the maturation of ribosomes and spliceosomes. They consist of small nucleolar RNA or Cajal body RNA combined with partner proteins and represent the most complex RNA modification enzymes. Recent advances in structure and function studies have revealed detailed information regarding ribonucleoprotein assembly and substrate binding. These enzymes form intertwined RNA–protein assemblies that facilitate reversible binding of the large ribosomal RNA or small nuclear RNA. These revelations explain the specificity among the components in enzyme assembly and substrate modification. The multiple conformations of individual components and those of complete RNPs suggest a dynamic assembly process and justify the requirement of many assembly factors in vivo.
- Subjects
RIBOSOMES; ENZYMES; NUCLEAR proteins; NUCLEOPROTEINS; CATALYTIC RNA; PROTEIN binding; ENZYMOLOGY
- Publication
Quarterly Reviews of Biophysics, 2010, Vol 44, Issue 1, p95
- ISSN
0033-5835
- Publication type
Article
- DOI
10.1017/S0033583510000235