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TitleUnique architecture of thermophilic archaeal virus APBV1 and its genome packaging.
Journal, issue, pagesNat Commun, Vol. 8, Issue 1, Page 1436, Year 2017
Publish dateNov 10, 2017
AuthorsDenis Ptchelkine / Ashley Gillum / Tomohiro Mochizuki / Soizick Lucas-Staat / Ying Liu / Mart Krupovic / Simon E V Phillips / David Prangishvili / Juha T Huiskonen /
PubMed AbstractArchaeal viruses have evolved to infect hosts often thriving in extreme conditions such as high temperatures. However, there is a paucity of information on archaeal virion structures, genome ...Archaeal viruses have evolved to infect hosts often thriving in extreme conditions such as high temperatures. However, there is a paucity of information on archaeal virion structures, genome packaging, and determinants of temperature resistance. The rod-shaped virus APBV1 (Aeropyrum pernix bacilliform virus 1) is among the most thermostable viruses known; it infects a hyperthermophile Aeropyrum pernix, which grows optimally at 90 °C. Here we report the structure of APBV1, determined by cryo-electron microscopy at near-atomic resolution. Tight packing of the major virion glycoprotein (VP1) is ensured by extended hydrophobic interfaces, and likely contributes to the extreme thermostability of the helical capsid. The double-stranded DNA is tightly packed in the capsid as a left-handed superhelix and held in place by the interactions with positively charged residues of VP1. The assembly is closed by specific capping structures at either end, which we propose to play a role in DNA packing and delivery.
External linksNat Commun / PubMed:29127347 / PubMed Central
MethodsEM (single particle)
Resolution3.7 - 7.2 Å
Structure data

3857

5oxe

EMDB-3857: Structure of Aeropyrum pernix bacilliform virus 1 APBV1 helical capsid
PDB-5oxe: Structure of major capsid protein VP1 of Aeropyrum pernix bacilliform virus 1 APBV1
Method: EM (single particle) / Resolution: 3.7 Å

EMDB-3858:
Structure of Aeropyrum pernix bacilliform virus 1 APBV1 helical capsid blunt end
Method: EM (single particle) / Resolution: 7.1 Å

EMDB-3859:
Structure of Aeropyrum pernix bacilloform virus 1 APBV1 helical capsid pointy end
Method: EM (single particle) / Resolution: 7.2 Å

Source
  • aeropyrum pernix bacilliform virus 1
KeywordsVIRUS / archaeal virus / thermophile / capsid / helical

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