2RQL

Solution structure of the E. coli ribosome hibernation promoting factor HPF

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.2 of the entry. See complete history. 


Literature

Solution structure of the E. coli ribosome hibernation promoting factor HPF: Implications for the relationship between structure and function.

Sato, A., Watanabe, T., Maki, Y., Ueta, M., Yoshida, H., Ito, Y., Wada, A., Mishima, M.

(2009) Biochem Biophys Res Commun 389: 580-585

  • DOI: 10.1016/j.bbrc.2009.09.022
  • Primary Citation of Related Structures:  
    2RQL

  • PubMed Abstract: 

    • The 70S Escherichia coli ribosome dimerizes to form an inactive 100S ribosome during stationary phase, which is called "ribosome hibernation". The hibernation promoting factor HPF plays a crucial role in 100S ribosome formation. However, YfiA, a known paralog of HPF inhibits 100S formation, although it shares high sequence similarity ...

    The 70S Escherichia coli ribosome dimerizes to form an inactive 100S ribosome during stationary phase, which is called "ribosome hibernation". The hibernation promoting factor HPF plays a crucial role in 100S ribosome formation. However, YfiA, a known paralog of HPF inhibits 100S formation, although it shares high sequence similarity. Here, we report the first solution structure of HPF as determined by multi-dimensional NMR. HPF adopts betaalphabetabetabetaalpha-fold and the overall structure is similar to YfiA as expected. However, detailed structure comparison based on the determined structure in this study revealed that there are remarkable differences around the C-terminal portion of helix alpha2, which is not predicted by homology modeling. Furthermore, some acidic residues conserved only in HPF are located at the rim of the common basic patch.

    Organizational Affiliation: 

    Graduate School of Science and Technology, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji, Japan.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Probable sigma-54 modulation proteinA95Escherichia coliMutation(s): 0 
Gene Names: hpf, ECs4082
UniProt
Find proteins for P0AFX0 (Escherichia coli (strain K12))
Explore P0AFX0 
Go to UniProtKB:  P0AFX0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0AFX0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2RQL Olderado

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2009-08-13 
  • Released Date: 2010-02-02 
    • Deposition Author(s): Sato, A., Mishima, M.

Revision History  (Full details and data files)

  • Version 1.0: 2010-02-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2022-03-16
    Changes: Data collection, Database references, Derived calculations