Solid State NMR structure of the Pf1 Major Coat Protein in Magnetically Aligned Bacteriophage

Experimental Data Snapshot

  • Conformers Calculated: 116 
  • Conformers Submitted: 27 

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Structure of the coat protein in Pf1 bacteriophage determined by solid-state NMR spectroscopy.

Thiriot, D.S.Nevzorov, A.A.Zagyanskiy, L.Wu, C.H.Opella, S.J.

(2004) J Mol Biol 341: 869-879

  • DOI: https://doi.org/10.1016/j.jmb.2004.06.038
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The atomic resolution structure of Pf1 coat protein determined by solid-state NMR spectroscopy of magnetically aligned filamentous bacteriophage particles in solution is compared to the structures previously determined by X-ray fiber and neutron diffraction, the structure of its membrane-bound form, and the structure of fd coat protein. These structural comparisons provide insights into several biological properties, differences between class I and class II filamentous bacteriophages, and the assembly process. The six N-terminal amino acid residues adopt an unusual "double hook" conformation on the outside of the bacteriophage particle. The solid-state NMR results indicate that at 30 degrees C, some of the coat protein subunits assume a single, fully structured conformation, and some have a few mobile residues that provide a break between two helical segments, in agreement with structural models from X-ray fiber and neutron diffraction, respectively. The atomic resolution structure determined by solid-state NMR for residues 7-14 and 18-46, which excludes the N-terminal double hook and the break between the helical segments, but encompasses more than 80% of the backbone including the distinct kink at residue 29, agrees with that determined by X-ray fiber diffraction with an RMSD value of 2.0 A. The symmetry and distance constraints determined by X-ray fiber and neutron diffraction enable the construction of an accurate model of the bacteriophage particle from the coordinates of the coat protein monomers.

  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, San Diego, CA 92093-0307, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
COAT PROTEIN B46Primolicivirus Pf1Mutation(s): 0 
Gene Names: VIII
Membrane Entity: Yes 
Find proteins for P03621 (Pseudomonas phage Pf1)
Explore P03621 
Go to UniProtKB:  P03621
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03621
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Conformers Calculated: 116 
  • Conformers Submitted: 27 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-08-10
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2012-06-06
    Changes: Structure summary