2LFR

Solution structure of the chimeric Af1503 HAMP- EnvZ DHp homodimer


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 18 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mechanism of regulation of receptor histidine kinases.

Ferris, H.U.Dunin-Horkawicz, S.Hornig, N.Hulko, M.Martin, J.Schultz, J.E.Zeth, K.Lupas, A.N.Coles, M.

(2012) Structure 20: 56-66

  • DOI: 10.1016/j.str.2011.11.014
  • Primary Citation of Related Structures:  
    2LFR, 2LFS, 3ZRV, 3ZRW, 3ZRX

  • PubMed Abstract: 
  • Bacterial transmembrane receptors regulate an intracellular catalytic output in response to extracellular sensory input. To investigate the conformational changes that relay the regulatory signal, we have studied the HAMP domain, a ubiquitous intracellular module connecting input to output domains ...

    Bacterial transmembrane receptors regulate an intracellular catalytic output in response to extracellular sensory input. To investigate the conformational changes that relay the regulatory signal, we have studied the HAMP domain, a ubiquitous intracellular module connecting input to output domains. HAMP forms a parallel, dimeric, four-helical coiled coil, and rational substitutions in our model domain (Af1503 HAMP) induce a transition in its interhelical packing, characterized by axial rotation of all four helices (the gearbox signaling model). We now illustrate how these conformational changes are propagated to a downstream domain by fusing Af1503 HAMP variants to the DHp domain of EnvZ, a bacterial histidine kinase. Structures of wild-type and mutant constructs are correlated with ligand response in vivo, clearly associating them with distinct signaling states. We propose that altered recognition of the catalytic domain by DHp, rather than a shift in position of the phospho-accepting histidine, forms the basis for regulation of kinase activity.


    Organizational Affiliation

    Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, 72076 Tübingen, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HAMP domain-containing protein, Osmolarity sensor protein EnzV chimeraA, B114Archaeoglobus fulgidus DSM 4304Shigella flexneri
This entity is chimeric
Mutation(s): 0 
Gene Names: AF_1503envZSF3423S4340
EC: 2.7.13.3
UniProt
Find proteins for P0AEJ5 (Shigella flexneri)
Explore P0AEJ5 
Go to UniProtKB:  P0AEJ5
Find proteins for O28769 (Archaeoglobus fulgidus (strain ATCC 49558 / DSM 4304 / JCM 9628 / NBRC 100126 / VC-16))
Explore O28769 
Go to UniProtKB:  O28769
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsP0AEJ5O28769
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 18 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-08-24
    Type: Initial release
  • Version 1.1: 2012-02-01
    Changes: Database references
  • Version 1.2: 2021-08-18
    Changes: Data collection, Database references, Experimental preparation, Source and taxonomy, Structure summary