Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 52.44 kDa 
• Atom Count: 3442 
• Modelled Residue Count: 415 
• Deposited Residue Count: 448 
• Unique protein chains: 1

5AIO

Crystal structure of t131 N-terminal TPR array

• DOI: 10.2210/pdb5AIO/pdb

• Classification: TRANSCRIPTION
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2015-02-16 Released: 2015-06-24 
• Deposition Author(s): Male, G., Glatt, S., Mueller, C.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.15 Å
• R-Value Free: 0.287 
• R-Value Work: 0.250 
• R-Value Observed: 0.252 

Literature

Architecture of TFIIIC and its role in RNA polymerase III pre-initiation complex assembly.

Male, G., von Appen, A., Glatt, S., Taylor, N.M., Cristovao, M., Groetsch, H., Beck, M., Muller, C.W.

(2015) Nat Commun 6: 7387-7387

• PubMed: 26060179 
• DOI: 10.1038/ncomms8387
• Primary Citation of Related Structures:  
  5AEM, 5AIM, 5AIO


• PubMed Abstract: 
  

In eukaryotes, RNA Polymerase III (Pol III) is specifically responsible for transcribing genes encoding tRNAs and other short non-coding RNAs. The recruitment of Pol III to tRNA-encoding genes requires the transcription factors (TF) IIIB and IIIC. TFIIIC has been described as a conserved, multi-subunit protein complex composed of two subcomplexes, called τA and τB. How these two subcomplexes are linked and how their interaction affects the formation of the Pol III pre-initiation complex (PIC) is poorly understood. Here we use chemical crosslinking mass spectrometry and determine the molecular architecture of TFIIIC. We further report the crystal structure of the essential TPR array from τA subunit τ131 and characterize its interaction with a central region of τB subunit τ138. The identified τ131-τ138 interacting region is essential in vivo and overlaps with TFIIIB-binding sites, revealing a crucial interaction platform for the regulation of tRNA transcription initiation.

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Organizational Affiliation: 

European Molecular Biology Laboratory (EMBL), Structural and Computational Biology Unit, Meyerhofstrasse 1, Heidelberg 69117, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRANSCRIPTION FACTOR TAU 131 KDA SUBUNIT	A	448	Saccharomyces cerevisiae	Mutation(s): 0
Find proteins for P33339 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P33339  Go to UniProtKB:  P33339

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.15 Å
• R-Value Free: 0.287 
• R-Value Work: 0.250 
• R-Value Observed: 0.252 
• Space Group: P 6₂

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 116.36	α = 90
b = 116.36	β = 90
c = 95.98	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2015-02-16 
• Released Date: 2015-06-24 
Deposition Author(s): Male, G., Glatt, S., Mueller, C.W.

Revision History  

• Version 1.0: 2015-06-24
  Type: Initial release
  
• Version 2.0: 2018-02-14
  Changes: Advisory, Atomic model, Data collection, Database references