Crystal Structure of YycH from Bacillus subtilis

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.251 
  • R-Value Observed: 0.255 

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This is version 1.4 of the entry. See complete history


The crystal structure of YycH involved in the regulation of the essential YycFG two-component system in Bacillus subtilis reveals a novel tertiary structure.

Szurmant, H.Zhao, H.Mohan, M.A.Hoch, J.A.Varughese, K.I.

(2006) Protein Sci 15: 929-934

  • DOI: https://doi.org/10.1110/ps.052064406
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The Bacillus subtilis YycFG two-component signal transduction system is essential for cell viability, and the YycH protein is part of the regulatory circuit that controls its activity. The crystal structure of YycH was solved by two-wavelength selenium anomalous dispersion data, and was refined using 2.3 A data to an R-factor of 25.2%. The molecule is made up of three domains, and has a novel three-dimensional structure. The N-terminal domain features a calcium binding site and the central domain contains two conserved loop regions.

  • Organizational Affiliation

    Division of Cellular Biology, Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Two-component system yycF/yycG regulatory protein yycH417Bacillus subtilisMutation(s): 0 
Gene Names: yycH
Find proteins for Q794W0 (Bacillus subtilis (strain 168))
Explore Q794W0 
Go to UniProtKB:  Q794W0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ794W0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.251 
  • R-Value Observed: 0.255 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.578α = 90
b = 63.578β = 90
c = 192.327γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
SCALAdata scaling
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-04-25
    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: 2017-10-18
    Changes: Refinement description
  • Version 1.4: 2024-02-14
    Changes: Data collection, Database references