Journal
CURRENT OPINION IN STRUCTURAL BIOLOGY
Volume 17, Issue 4, Pages 427-436Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.sbi.2007.08.016
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Funding
- NIGMS NIH HHS [R01 GM061050-05A2, R01 GM061050-06, R01 GM061050] Funding Source: Medline
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The structures of glycoproteins that mediate enveloped virus entry into cells have revealed dramatic structural changes that accompany membrane fusion and provided mechanistic insights into this process. The group of class I viral fusion proteins includes the influenza hemagglutinin, paramyxovirus F, HIV env, and other mechanistically related fusogens, but these proteins are unrelated in sequence and exhibit clearly distinct structural features. Recently determined crystal structures of the paramyxovirus F protein in two conformations, representing pre-fusion and post-fusion states, reveal a novel protein architecture that undergoes large-scale, irreversible refolding during membrane fusion, extending our understanding of this diverse group of membrane fusion machines.
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