5g5l

From Proteopedia

RNA polymerase I-Rrn3 complex at 4.8 A resolution

5g5l, resolution 4.80Å

Structural highlights

5g5l is a 10 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	Electron Microscopy, Resolution 4.8Å
Ligands:
Experimental data:	Check to display Experimental Data
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RPAB4_YEAST DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Common component of RNA polymerases I, II and III which synthesize ribosomal RNA precursors, mRNA precursors and many functional non-coding RNAs, and a small RNAs, such as 5S rRNA and tRNAs, respectively. Pols are composed of mobile elements that move relative to each other. In Pol II, the core element with the central large cleft comprises RPB3, RBP10, RPB11, RPB12 and regions of RPB1 and RPB2 forming the active center.

Publication Abstract from PubMed

Transcription of ribosomal DNA by RNA polymerase I (Pol I) requires the initiation factor Rrn3. Here we report the cryo-EM structure of the Pol I-Rrn3 complex at 4.8 A resolution. The structure reveals how Rrn3 binding converts an inactive Pol I dimer into an initiation-competent monomeric complex and provides insights into the mechanisms of Pol I-specific initiation and regulation.

RNA polymerase I-Rrn3 complex at 4.8 A resolution.,Engel C, Plitzko J, Cramer P Nat Commun. 2016 Jul 15;7:12129. doi: 10.1038/ncomms12129. PMID:27418309^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Engel C, Plitzko J, Cramer P. RNA polymerase I-Rrn3 complex at 4.8 A resolution. Nat Commun. 2016 Jul 15;7:12129. doi: 10.1038/ncomms12129. PMID:27418309 doi:http://dx.doi.org/10.1038/ncomms12129