Structure of the 6th ORF of the Rhodobacter blastica ATPase operon; Majastridin

Experimental Data Snapshot

  • Resolution: 1.10 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.137 
  • R-Value Observed: 0.138 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Crystal structure of a protein, structurally related to glycosyltransferases, encoded in the Rhodobacter blasticus atp operon.

Enroth, C.Strid, A.

(2008) Biochim Biophys Acta 1784: 379-384

  • DOI: https://doi.org/10.1016/j.bbapap.2007.11.005
  • Primary Citation of Related Structures:  
    2NXV, 2QGI

  • PubMed Abstract: 

    The F1-ATP synthase atp operon in the proteobacterium Rhodobacter blasticus contains six open reading frames, encoding six hypothetical proteins. Five of these subunits, in the stoichiometry (alphabeta)3gamma delta epsilon make up the catalytic F1-ATP synthase complex similarly in bacteria, chloroplasts and mitochondria. The sixth gene of the R. blasticus atp operon, urf6, shows very little sequence homology to any protein of known structure or function. The gene has previously been cloned, the product (called majastridin) has been heterologously expressed in Escherichia coli, and purified to high homogeneity [M. Brosché, I. Kalbina, M. Arnfelt, G. Benito, B.G. Karlsson, A. Strid, Occurrence, overexpression and partial purification of the protein (majastridin) corresponding to the URF6 gene of the Rhodobacter blasticus atp operon, Eur. J. Biochem. 255 (1998) 87-92]. We have solved the X-ray crystal structure and refined a model of majastridin to atomic resolution. Here we present the crystal structures of apo-majastridin and the complex of majastridin with Mn2+ and UDP and show that it has extensive structural similarity to glycosyltransferases (EC 2.4). This is the first structure determined from a new group of distantly related bacterial proteins of at least six members. They share the identical amino acids that bind Mn2+ and a triplet of amino acids in the putative sugar-binding site.

  • Organizational Affiliation

    Department of Science and Orebro Life Science Center, Orebro University, SE-70182 Orebro, Sweden.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ATP synthase subunits region ORF 6
A, B
249Fuscovulum blasticumMutation(s): 0 
Find proteins for P05449 (Fuscovulum blasticum)
Explore P05449 
Go to UniProtKB:  P05449
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05449
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.10 Å
  • R-Value Free: 0.155 
  • R-Value Work: 0.137 
  • R-Value Observed: 0.138 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.873α = 90
b = 90.311β = 90
c = 69.59γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
MAR345dtbdata collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-12-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.2: 2018-03-07
    Changes: Data collection
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references, Derived calculations