2AYA

Solution Structure of the C-Terminal 14 kDa Domain of the tau subunit from Escherichia coli DNA Polymerase III

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformer models are the 20 structures with the lowest energy violations 

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This is version 1.3 of the entry. See complete history. 


Literature

Solution structure of Domains IVa and V of the tau subunit of Escherichia coli DNA polymerase III and interaction with the alpha subunit.

Su, X.C., Jergic, S., Keniry, M.A., Dixon, N.E., Otting, G.

(2007) Nucleic Acids Res 35: 2825-2832

  • DOI: 10.1093/nar/gkm080
  • Primary Citation of Related Structures:  
    2AYA

  • PubMed Abstract: 

    • The solution structure of the C-terminal Domain V of the tau subunit of E. coli DNA polymerase III was determined by nuclear magnetic resonance (NMR) spectroscopy. The fold is unique to tau subunits. Amino acid sequence conservation is pronounced for hydrophobic residues that form the structural core of the protein, indicating that the fold is representative for tau subunits from a wide range of different bacteria ...

    The solution structure of the C-terminal Domain V of the tau subunit of E. coli DNA polymerase III was determined by nuclear magnetic resonance (NMR) spectroscopy. The fold is unique to tau subunits. Amino acid sequence conservation is pronounced for hydrophobic residues that form the structural core of the protein, indicating that the fold is representative for tau subunits from a wide range of different bacteria. The interaction between the polymerase subunits tau and alpha was studied by NMR experiments where alpha was incubated with full-length C-terminal domain (tau(C)16), and domains shortened at the C-terminus by 11 and 18 residues, respectively. The only interacting residues were found in the C-terminal 30-residue segment of tau, most of which is structurally disordered in free tau(C)16. Since the N- and C-termini of the structured core of tau(C)16 are located close to each other, this limits the possible distance between alpha and the pentameric deltatau2gammadelta' clamp-loader complex and, hence, between the two alpha subunits involved in leading- and lagging-strand DNA synthesis. Analysis of an N-terminally extended construct (tau(C)22) showed that tau(C)14 presents the only part of Domains IVa and V of tau which comprises a globular fold in the absence of other interaction partners.

    Organizational Affiliation: 

    Research School of Chemistry, Australian National University, Canberra ACT 0200, Australia.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA polymerase III subunit tauA128Escherichia coliMutation(s): 0 
Gene Names: dnaX, dnaZ, dnaZX
EC: 2.7.7.7
UniProt
Find proteins for P06710 (Escherichia coli (strain K12))
Explore P06710 
Go to UniProtKB:  P06710
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06710
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformer models are the 20 structures with the lowest energy violations 
  • OLDERADO: 2AYA Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-11-14
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-03-09
    Changes: Data collection, Database references, Derived calculations