Gpn2 and Rba50 Directly Participate in the Assembly of the Rpb3 Subcomplex in the Biogenesis of RNA Polymerase II.
RNA polymerase II (RNAPII) is one of the central enzymes in cell growth and organizational development. It is a large macromolecular complex consisting of 12 subunits. Relative to the clear definition of RNAPII structure and biological function, the molecular mechanism of how RNAPII is assembled is poorly understood, and thus ... the key assembly factors acting for the assembly of RNAPII remain elusive. In this study, we identified two factors, Gpn2 and Rba50, that directly participate in the assembly of RNAPII. Gpn2 and Rba50 were demonstrated to interact with Rpb12 and Rpb3, respectively. An interaction between Gpn2 and Rba50 was also demonstrated. When Gpn2 and Rba50 are functionally defective, the assembly of the Rpb3 subcomplex is disrupted, leading to defects in the assembly of RNAPII. Based on these results, we conclude that Gpn2 and Rba50 directly participate in the assembly of the Rpb3 subcomplex and subsequently the biogenesis of RNAPII.
Mesh Terms:
Amino Acid Sequence, Conserved Sequence, GTP Phosphohydrolases, Humans, Models, Biological, Monomeric GTP-Binding Proteins, Multiprotein Complexes, Mutation, Protein Multimerization, Protein Subunits, RNA Polymerase II, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins, Schizosaccharomyces, Schizosaccharomyces pombe Proteins, Sequence Homology, Amino Acid
Amino Acid Sequence, Conserved Sequence, GTP Phosphohydrolases, Humans, Models, Biological, Monomeric GTP-Binding Proteins, Multiprotein Complexes, Mutation, Protein Multimerization, Protein Subunits, RNA Polymerase II, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins, Schizosaccharomyces, Schizosaccharomyces pombe Proteins, Sequence Homology, Amino Acid
Mol. Cell. Biol.
Date: Dec. 01, 2017
PubMed ID: 29661922
View in: Pubmed Google Scholar
Download Curated Data For This Publication
216808
Switch View:
- Interactions 19