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TitleThe mechanism of HIV-1 core assembly: insights from three-dimensional reconstructions of authentic virions.
Journal, issue, pagesStructure, Vol. 14, Issue 1, Page 15-20, Year 2006
Publish dateApr 13, 2006
AuthorsJohn A G Briggs / Kay Grünewald / Bärbel Glass / Friedrich Förster / Hans-Georg Kräusslich / Stephen D Fuller /
PubMed AbstractInfectious HIV particles contain a characteristic cone-shaped core encasing the viral RNA and replication proteins. The core exhibits significant heterogeneity in size and shape, yet consistently ...Infectious HIV particles contain a characteristic cone-shaped core encasing the viral RNA and replication proteins. The core exhibits significant heterogeneity in size and shape, yet consistently forms a well-defined structure. The mechanism by which the core is assembled in the maturing virion remains poorly understood. Using cryo-electron tomography, we have produced three-dimensional reconstructions of authentic, unstained HIV-1. These reveal the viral morphology with unprecedented clarity and suggest the following mechanism for core formation inside the extracellular virion: core growth initiates at the narrow end of the cone and proceeds toward the distal side of the virion until limited by the viral membrane. Curvature and closure of the broad end of the core are then directed by the inner surface of the viral membrane. This mechanism accommodates significant flexibility in lattice growth while ensuring the closure of cores of variable size and shape.
External linksStructure / PubMed:16407061
MethodsEM (tomography)
Structure data

EMDB-1155:
The mechanism of HIV-1 core assembly: insights from three-dimensional reconstructions of authentic virions.
Method: EM (tomography)

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