1WCL | pdb_00001wcl

NMR structure of the carboxyterminal domains of Escherichia coli NusA

• PDB DOI: https://doi.org/10.2210/pdb1WCL/pdb

• Classification: RNA BINDING PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2004-11-17 Released: 2005-08-31 
• Deposition Author(s): Eisenmann, A., Schwarz, S., Schweimer, K., Roesch, P.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 90 
• Conformers Submitted: 19 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Literature

The E. Coli Nusa Carboxy-Terminal Domains are Structurally Similar and Show Specific Rnap- and Lambdan Interactions

Eisenmann, A., Schwarz, S., Prasch, S., Schweimer, K., Roesch, P.

(2005) Protein Sci 14: 2018

• PubMed: 15987884 
• DOI: https://doi.org/10.1110/ps.051372205
• Primary Citation Related Structures: 
  1WCL, 1WCN


• PubMed Abstract: 
  

  The carboxy-terminal domain of the transcription factor Escherichia coli NusA, NusACTD, interacts with the protein N of bacteriophage lambda, lambdaN, and the carboxyl terminus of the E. coli RNA polymerase alpha subunit, alphaCTD. We solved the solution structure of the unbound NusACTD with high-resolution nuclear magnetic resonance (NMR). Additionally, we investigated the binding sites of lambdaN and alphaCTD on NusACTD using NMR titrations. The solution structure of NusACTD shows two structurally similar subdomains, NusA(353-416) and NusA(431-490), matching approximately two homologous acidic sequence repeats. Further characterization of NusACTD with 15N NMR relaxation data suggests that the interdomain region is only weakly structured and that the subdomains are not interacting. Both subdomains adopt an (HhH)2 fold. These folds are normally involved in DNA-protein and protein-protein interactions. NMR titration experiments show clear differences of the interactions of these two domains with alphaCTD and lambdaN, in spite of their structural similarity.

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Organizational Affiliation: 
• Department of Biopolymers, University of Bayreuth, 95440 Bayreuth, Germany.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 8.42 kDa 
• Atom Count: 591 
• Modeled Residue Count: 76 
• Deposited Residue Count: 76 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRANSCRIPTION ELONGATION PROTEIN NUSA	A	76	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AFF6 (Escherichia coli (strain K12)) Explore P0AFF6  Go to UniProtKB:  P0AFF6

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 90 
• Conformers Submitted: 19 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-08-31 
Deposition Author(s): Eisenmann, A., Schwarz, S., Schweimer, K., Roesch, P.

Revision History  

• Version 1.0: 2005-08-31
  Type: Initial release
  
• Version 1.1: 2017-04-19
  Changes: Atomic model, Other
• Version 1.2: 2024-05-15
  Changes: Data collection, Database references, Other