Mersacidin from Bacillus

Experimental Data Snapshot

  • Resolution: 1.06 Å
  • R-Value Observed: 0.141 

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This is version 1.7 of the entry. See complete history


Ab initio structure determination of the lantibiotic mersacidin.

Schneider, T.R.Karcher, J.Pohl, E.Lubini, P.Sheldrick, G.M.

(2000) Acta Crystallogr D Biol Crystallogr 56: 705-713

  • DOI: https://doi.org/10.1107/s0907444900003711
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The crystal structure of mersacidin, a potential novel antibiotic against methicillin- and vancomycin-resistant Staphylococcus aureus strains, has been determined by ab initio methods. Despite all crystals being merohedrally twinned, an accurate structural model with an R value of 13.4% has been obtained at atomic resolution. With six molecules in the asymmetric unit and no atom heavier than sulfur, the structure corresponds to a protein of 120 amino acids and is the largest approximately equal-atom unknown structure solved by direct methods. In the crystal, the molecule assumes a compact fold different from that found by NMR in solution. Comparison of the NCS-related molecules reveals regions of variable flexibility. The region highly homologous to the related antibiotic actagardine is very rigid and possibly defines an essential building block of this class of new antibacterial substances.

  • Organizational Affiliation

    University of Göttingen, Department of Structural Chemistry, Germany. trs@shelx.uni-ac-gwdg.de


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D, E
A, B, C, D, E, F
20Bacillus sp. (in: firmicutes)Mutation(s): 0 
Find proteins for P43683 (Bacillus sp. (strain HIL-Y85/54728))
Explore P43683 
Go to UniProtKB:  P43683
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP43683
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.06 Å
  • R-Value Observed: 0.141 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.09α = 90
b = 46.09β = 90
c = 31.02γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-05-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Structure summary, Version format compliance
  • Version 1.2: 2011-07-27
    Changes: Atomic model, Data collection, Derived calculations, Other, Refinement description
  • Version 1.3: 2012-11-30
    Changes: Other
  • Version 1.4: 2019-04-17
    Changes: Data collection, Derived calculations, Experimental preparation, Other
  • Version 1.5: 2019-05-22
    Changes: Data collection, Refinement description
  • Version 1.6: 2019-07-24
    Changes: Data collection, Experimental preparation
  • Version 1.7: 2019-10-09
    Changes: Data collection, Database references, Other