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TitleStructure of decay-accelerating factor bound to echovirus 7: a virus-receptor complex.
Journal, issue, pagesProc Natl Acad Sci U S A, Vol. 99, Issue 16, Page 10325-10329, Year 2002
Publish dateAug 6, 2002
AuthorsYongning He / Feng Lin / Paul R Chipman / Carol M Bator / Timothy S Baker / Menachem Shoham / Richard J Kuhn / M Edward Medof / Michael G Rossmann /
PubMed AbstractEchoviruses are enteroviruses that belong to Picornaviridae. Many echoviruses use decay-accelerating factor (DAF) as their cellular receptor. DAF is a glycosylphosphatidyl inositol-anchored ...Echoviruses are enteroviruses that belong to Picornaviridae. Many echoviruses use decay-accelerating factor (DAF) as their cellular receptor. DAF is a glycosylphosphatidyl inositol-anchored complement regulatory protein found on most cell surfaces. It functions to protect cells from complement attack. The cryo-electron microscopy reconstructions of echovirus 7 complexed with DAF show that the DAF-binding regions are located close to the icosahedral twofold axes, in contrast to other enterovirus complexes where the viral canyon is the receptor binding site. This novel receptor binding position suggests that DAF is important for the attachment of viral particles to host cells, but probably not for initiating viral uncoating, as is the case with canyon-binding receptors. Thus, a different cell entry mechanism must be used for enteroviruses that bind DAF.
External linksProc Natl Acad Sci U S A / PubMed:12119400 / PubMed Central
MethodsEM (single particle)
Resolution16 Å
Structure data

PDB-1m11:
structural model of human decay-accelerating factor bound to echovirus 7 from cryo-electron microscopy
Method: ELECTRON MICROSCOPY / Resolution: 16.0 Å

Source
  • homo sapiens (human)
  • human echovirus 7
KeywordsVirus/Receptor / decay-accelerating factor / SCR / Icosahedral virus / Virus-Receptor COMPLEX

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