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TitleA new topology of the HK97-like fold revealed in Bordetella bacteriophage by cryoEM at 3.5 A resolution.
Journal, issue, pagesElife, Vol. 2, Page e01299, Year 2013
Publish dateDec 17, 2013
AuthorsXing Zhang / Huatao Guo / Lei Jin / Elizabeth Czornyj / Asher Hodes / Wong H Hui / Angela W Nieh / Jeff F Miller / Z Hong Zhou /
PubMed AbstractBacteriophage BPP-1 infects and kills Bordetella species that cause whooping cough. Its diversity-generating retroelement (DGR) provides a naturally occurring phage-display system, but engineering ...Bacteriophage BPP-1 infects and kills Bordetella species that cause whooping cough. Its diversity-generating retroelement (DGR) provides a naturally occurring phage-display system, but engineering efforts are hampered without atomic structures. Here, we report a cryo electron microscopy structure of the BPP-1 head at 3.5 Å resolution. Our atomic model shows two of the three protein folds representing major viral lineages: jellyroll for its cement protein (CP) and HK97-like ('Johnson') for its major capsid protein (MCP). Strikingly, the fold topology of MCP is permuted non-circularly from the Johnson fold topology previously seen in viral and cellular proteins. We illustrate that the new topology is likely the only feasible alternative of the old topology. β-sheet augmentation and electrostatic interactions contribute to the formation of non-covalent chainmail in BPP-1, unlike covalent inter-protein linkages of the HK97 chainmail. Despite these complex interactions, the termini of both CP and MCP are ideally positioned for DGR-based phage-display engineering. DOI: http://dx.doi.org/10.7554/eLife.01299.001.
External linksElife / PubMed:24347545 / PubMed Central
MethodsEM (single particle)
Resolution3.4 - 3.5 Å
Structure data

EMDB-5764: A new topology of the HK97-like fold revealed in Bordetella bacteriophage by cryoEM at 3.5A resolution
PDB-3j4u: A new topology of the HK97-like fold revealed in Bordetella bacteriophage: non-covalent chainmail secured by jellyrolls
Method: EM (single particle) / Resolution: 3.5 Å

EMDB-5765:
A new topology of the HK97-like fold revealed in Bordetella bacteriophage by cryoEM at 3.5A resolution
Method: EM (single particle) / Resolution: 3.5 Å

EMDB-5766:
A new topology of the HK97-like fold revealed in Bordetella bacteriophage by cryoEM at 3.5A resolution
Method: EM (single particle) / Resolution: 3.4 Å

Source
  • bordetella phage bpp-1 (virus)
KeywordsVIRUS / protein topology / cryoEM

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