3TPT

Structure of HipA(D309Q) bound to ADP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.232 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Role of Unusual P Loop Ejection and Autophosphorylation in HipA-Mediated Persistence and Multidrug Tolerance.

Schumacher, M.A.Min, J.Link, T.M.Guan, Z.Xu, W.Ahn, Y.H.Soderblom, E.J.Kurie, J.M.Evdokimov, A.Moseley, M.A.Lewis, K.Brennan, R.G.

(2012) Cell Rep 2: 518-525

  • DOI: https://doi.org/10.1016/j.celrep.2012.08.013
  • Primary Citation of Related Structures:  
    3TPB, 3TPD, 3TPE, 3TPT, 3TPV

  • PubMed Abstract: 

    HipA is a bacterial serine/threonine protein kinase that phosphorylates targets, bringing about persistence and multidrug tolerance. Autophosphorylation of residue Ser150 is a critical regulatory mechanism of HipA function. Intriguingly, Ser150 is not located on the activation loop, as are other kinases; instead, it is in the protein core, where it forms part of the ATP-binding "P loop motif." How this buried residue is phosphorylated and regulates kinase activity is unclear. Here, we report multiple structures that reveal the P loop motif's exhibition of a remarkable "in-out" conformational equilibrium, which allows access to Ser150 and its intermolecular autophosphorylation. Phosphorylated Ser150 stabilizes the "out state," which inactivates the kinase by disrupting the ATP-binding pocket. Thus, our data reveal a mechanism of protein kinase regulation that is vital for multidrug tolerance and persistence, as kinase inactivation provides the critical first step in allowing dormant cells to revert to the growth phenotype and to reinfect the host.


  • Organizational Affiliation

    Department of Biochemistry, Duke University School of Medicine, Durham, NC 27710, USA. maria.schumacher@duke.edu


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase HipA
A, B
440Escherichia coliMutation(s): 1 
Gene Names: hipA
EC: 2.7.11.1
UniProt
Find proteins for P23874 (Escherichia coli (strain K12))
Explore P23874 
Go to UniProtKB:  P23874
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23874
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.232 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.6α = 90
b = 84.43β = 91.66
c = 69.63γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-03
    Type: Initial release
  • Version 1.1: 2012-10-17
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations