1WN0

Crystal Structure of Histidine-containing Phosphotransfer Protein, ZmHP2, from maize


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Crystal structure of the histidine-containing phosphotransfer protein ZmHP2 from maize

Sugawara, H.Kawano, Y.Hatakeyama, T.Yamaya, T.Kamiya, N.Sakakibara, H.

(2005) Protein Sci 14: 202-208

  • DOI: https://doi.org/10.1110/ps.041076905
  • Primary Citation of Related Structures:  
    1WN0

  • PubMed Abstract: 

    In higher plants, histidine-aspartate phosphorelays (two-component system) are involved in hormone signaling and stress responses. In these systems, histidine-containing phosphotransfer (HPt) proteins mediate the signal transmission from sensory histidine kinases to response regulators, including integration of several signaling pathways or branching into different pathways. We have determined the crystal structure of a maize HPt protein, ZmHP2, at 2.2 A resolution. ZmHP2 has six alpha-helices with a four-helix bundle at the C-terminus, a feature commonly found in HPt domains. In ZmHP2, almost all of the conserved residues among plant HPt proteins surround this histidine, probably forming the docking interface for the receiver domain of histidine kinase or the response regulator. Arg102 of ZmHP2 is conserved as a basic residue in plant HPt proteins. In bacteria, it is replaced by glutamine or glutamate that form a hydrogen bond to Ndelta atoms of the phospho-accepting histidine. It may play a key role in the complex formation of ZmHP2 with receiver domains.


  • Organizational Affiliation

    Laboratory for Communication Mechanisms, RIKEN Plant Science Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan. sugawara@psc.riken.go.jp


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
histidine-containing phosphotransfer protein
A, B, C, D
145Zea maysMutation(s): 0 
Gene Names: Zmhp2
UniProt
Find proteins for Q9SLX1 (Zea mays)
Explore Q9SLX1 
Go to UniProtKB:  Q9SLX1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9SLX1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 148.8α = 90
b = 81.41β = 123.42
c = 89.5γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2005-01-25
    Type: Initial release
  • Version 1.1: 2007-10-04
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2024-03-13
    Changes: Data collection, Database references
  • Version 1.4: 2024-04-03
    Changes: Refinement description